# NTSB DCA26MA024: Mcdonnell Douglas MD-11F, N259UP, Louisville, KY, November 4, 2025

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Class 1 · Major · Preliminary report
- Date: November 4, 2025, 17:14 local (22:14 UTC)
- Place: Louisville, KY
- Coordinates: 38.14718, -85.734333
- Nearby events: https://openairdocs.org/map.md?lat=38.1472&lon=-85.7343&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Defining event: [Takeoff: Part(s) separation from AC](https://openairdocs.org/ntsb-events/338)
- Highest injury: Fatal
- Injuries: 14 fatal, 2 serious, 21 minor; on the ground: 11 fatal, 2 serious, 21 minor
- Status: Investigation ongoing
- Investigation class: Class 1
- NTSB office: Major Investigations Division
- Parties: GE, FAA, Boeing, Teamsters Airline Division, UPS, Independent Pilots Association
- ADs cited in the narratives: [AD 2025-23-51](https://openairdocs.org/ad/2025-23-51), [AD 2025-23-53](https://openairdocs.org/ad/2025-23-53) (OpenAirDocs)
- NTSB case key (mKey): 201958
- NTSB case page: https://www.ntsb.gov/investigations/Pages/DCA26MA024.aspx
- NTSB preliminary report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/201958/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=201958
- Page: https://openairdocs.org/ntsb/DCA26MA024

## Preliminary report

On November 4, 2025, about 1714 eastern standard time (EST), United Parcel Service (UPS) flight 2976, a Boeing (McDonnell-Douglas) MD-11F airplane, N259UP, was destroyed after it impacted the ground shortly after takeoff from runway 17R at Louisville Muhammad Ali International Airport (SDF), Louisville, Kentucky. The 3 crewmembers aboard the airplane and 11 people on the ground were fatally injured. There were 23 others on the ground who were injured. Flight 2976 was a domestic cargo flight operating under the provisions of Title 14 Code of Federal Regulations (CFR) Part 121 from SDF to Daniel K. Inouye International Airport (HNL), Honolulu, Hawaii. In response to the accident, the NTSB traveled to SDF on November 5, 2025, and started the process of documenting the accident site, and collecting the perishable data necessary for the investigation. As part of the investigative process, the NTSB invited qualified parties to participate in the investigation. These included the Federal Aviation Administration (FAA), UPS, The Boeing Company, Independent Pilots Association (IPA), General Electric (GE) Aerospace, and Teamsters Airline Division. The parties were formed into specialized investigative groups led by NTSB group chairmen in the areas of Structures, Systems, Powerplants, Maintenance, Air Carrier Operations and Human Performance, Hazardous Materials, Aircraft Performance, Materials, Cockpit Voice Recorder (CVR), and Flight Data Recorder (FDR). A NTSB Air Traffic Controller (ATC) specialist was on site to collect ATC information, but an ATC group was not formed. NTSB Board Member Inman was the Board Member on scene. History of Flight UPS flight 2976 received their takeoff clearance from SDF ATC tower about 1711 and the flight crew acknowledged the takeoff clearance. The taxi and takeoff roll were uneventful until the airplane rotated for takeoff. Airport surveillance video of the airplane showed the left (No. 1) engine and pylon separating from the wing shortly after airplane rotation, with a fire igniting on the left engine while it traversed above the fuselage and subsequently impacted the ground (see figure 1). A fire ignited near the area of the left pylon attachment to the wing, which continued until ground impact. Figure 1. Still images from an airport surveillance video showing the left engine and left pylon separation from the left wing. (Source: UPS) The airplane initially climbed but did not get higher than about 30 ft above ground level (agl) according to radio altitude data from the FDR. (Based on FAA-provided ADS-B data, the last data point showed 481 ft mean sea level [msl] and 100 ft agl.) The airplane cleared the blast fence beyond the end of runway 17R, but the left main landing gear impacted the roof of a UPS Supply Chain Solutions warehouse at the southern edge of the airport (see figures 2 and 3). The airplane then impacted a storage yard and two additional buildings, including a petroleum recycling facility, and was mostlyconsumed by fire. The wreckage area continued from the UPS warehouse to about 3,000 ft south-southeast of it (see figure 4). The accident site debris was centered about 38° 8’ 49.85” north by 85° 44’ 3.86” west. Figure 2. The fire in the area of the left pylon attachment to the wing continued as the airplane cleared the blast fence. Figure 3. Graphic depicting the flight track of UPS flight 2976 based on ADS-B data. Figure 4. Accident site composite view created from aerial imaging overlaid on a Google Earth image. The upper end of the yellow-dashed bracket is the initial impact between the airplane landing gear and the UPS building roof. A witness in the SDF ATC tower reported that the takeoff speed appeared normal for that type of aircraft; however, the climb rate was not normal, as the airplane did not climb above the tower’s height of approximately 200 feet agl. Another witness reported that the airplane stopped climbing and began to lose altitude before rolling slightly to the left. Crew Experience The captain, who was the pilot monitoring, held an airline transport pilot certificate with a type rating for the MD-11. The captain had accumulated about 8,613 total hours of flight experience as reported to the FAA, of which 4,918 hours were in the accident airplane make and model. The first officer (FO), who was the pilot flying, held an airline transport pilot certificate with a type rating for the MD-11. The FO had accumulated about 9,200 total hours of flight experience as reported to the FAA, of which about 994 hours were in the accident airplane make and model. The relief officer (RO) held an airline transport pilot certificate with a type rating for the MD-11. The RO had accumulated about 15,250 total hours of flight experience as reported to the FAA, of which 8,775 hours were in the accident airplane make and model. Recorders The airplane was equipped with a FDR and a CVR, which were both recovered from the accident scene and transported to the NTSB Vehicle Recorders Laboratory in Washington, DC. Data from both the CVR and FDR were downloaded successfully. The CVR contained about 2 hours and 4 minutes of recorded data, including the entirety of the accident flight. The FDR contained about 63 hours of data that spanned 24 flights, including the accident flight. The FDR recorded about 450 parameters of flight data. The flight data for the accident flight started about 1707 EST, with the takeoff roll starting about 1712 EST. The flight data ended about 1713:30 EST. The NTSB convened separate CVR and FDR Groups, composed of qualified party members, for transcribing the accident flight recording from the CVR and validating the flight data from the FDR, respectively. Airplane and Operator Information The MD-11 is a three-engine widebody passenger airplane originally manufactured by McDonnell-Douglas, which subsequently merged with The Boeing Company. The MD-11F is the freighter version of the MD-11. The MD-11 can be equipped with either GECF-6 series or Pratt and Whitney PW4000 series engines. The accident airplane was equipped with GE CF-6 engines. The MD-11 was developed from the McDonnell-Douglas DC-10 series airplane. UPS is a cargo airline and is based in Louisville, Kentucky. The company operates a variety of aircraft including Boeing 757-200F, 767-300F, A300-600F, MD-11F, 747-400F, and 747-8F airplanes. As part of FAA requirements, the accident airplane was equipped with ADS-B Out. MD-11 Engine Pylon-to-Wing Connection The left (No. 1) and right (No. 3) engines of the MD-11 airplane are attached to the underside of pylons that are in turn attached to the underside of each wing. The center (No. 2) engine is attached to the base of the vertical stabilizer. The left and right pylon attaches to their respective wing via a forward mount bulkhead, a thrust link assembly, and an aft mount bulkhead. (For simplification, this report will refer to these bulkheads as the “forward mount” and the “aft mount”.) The forward mount contains two spherical bearings that are vertically aligned (upper and lower) that attach to the wing. The thrust link assembly, located immediately behind the forward mount’s lower spherical bearing, primarily transmits thrust loads. The pylon aft mount is an assembly composed of two independent fittings bolted together, with lugs (forward lug and aft lug) that house a single spherical bearing (see figures 5 and 6). For this report, references to the pylon aft mount spherical bearing includes both the bearing’s ball element (sphere) and its outer race. A clevis on the underside of each wing (“wing clevis”) connects to the pylon aft mount via attachment hardware. Figure 5. The pylon-to-wing mount diagram, with the inset image showing details of the pylon aft mount connection to the wing clevis. (Source: Boeing, edited by NTSB) Figure 6. An exemplar installation of the pylon aft mount to the wing clevis. The aft mount spherical bearing is obscured by the wing clevis. Recovery Operations and Wreckage Examination The airplane wreckage was spread over a wide area and significantly fragmented and burned. The left engine, left pylon, including its forward and aft mounts, fragments of engine fan blades, and separated pieces from the left engine were found on and adjacent to runway 17R. Recovered portions were transferred to a secure hangar on the airport property for further examination by investigators. The left pylon aft mount’s forward and aft lugs were both found fractured near their 2 o’clock (inboard fracture) and 9 o’clock (outboard fracture) positions when in the aft-looking-forward frame of reference (see figure 7). The fractured and separated upper portions of the forward and aft lugs were found adjacent to runway 17R. The left wing clevis, aft mount spherical bearing, and aft mount attachment hardware were found with a portion of the left wing at the accident site. The bolt, spherical bearing, and associated hardware remained attached to the wing clevis. Thespherical bearing outer race had fractured circumferentially, exposing the ball element (see figure 8). The right engine remained attached to the right wing pylon, both found at the accident site. The right wing pylon-to-wing forward and aft mounts had separated from the right wing pylon but were found about 87 ft from the right engine. The right pylon aft mount remained attached to the right wing clevis. Figure 7. The separated left pylon after recovery (left image) and the left pylon aft mount’s fractured forward and aft lugs (right/enlarged image). Figure 8. The left wing clevis, fractured spherical bearing (marked by the red brackets), and associated attachment hardware found at the accident site (left) and an exemplar spherical bearing (right). NTSB Materials Laboratory Examination The left pylon aft mount, fractured lugs from the left pylon aft mount, and the left wing clevis (containing the aft mount spherical bearing and attachment hardware) were retained for further examination at the NTSB Materials Laboratory (see figure 9). The right pylon aft mount and wing clevis assembly as well as two engine fan blade fragments found on runway 17R were also retained for further examination at the NTSB Materials Laboratory. Figure 9. The left pylon aft mount, the fractured and separated forward and aft lugs, and the left wing clevis containing the attachment hardware and fractured spherical bearing. After initial cleaning of the fracture surfaces, examination of the left pylon aft mount lug fractures found evidence of fatigue cracks in addition to areas of overstress failure. On the aft lug, on both the inboard and outboard fracture surfaces, a fatigue crack was observed where the aft lug bore met the aft lug forward face. For the forward lug’s inboard fracture surface, fatigue cracks were observed along the lug bore. For the forward lug’s outboard fracture surface, the fracture consisted entirely of overstress with no indications of fatigue cracking. The forward top flange of the aft mount assembly was examined for indications of deformation or pre-existing fractures, but no indications were found. The spherical bearing was removed from the wing clevis for further evaluation (see figure 10). Figure 10. The spherical bearing and attachment hardware after removal from the left wing clevis. Maintenance and Inspections At the time of the accident, N259UP had accumulated a total time of about 92,992 hours and 21,043 cycles. The accident airplane was maintained under a continuous airworthiness maintenance program (CAMP). A review of the inspection tasks for the left pylon aft mount found both a general visual inspection (GVI) and a detailed visual inspection of the left pylon aft mount, required by UPS’s maintenance program at a 72-month interval, was last accomplished on October 28, 2021. A 24-month/4,800 hour lubrication task of the pylon thrust links and pylon spherical bearings was last accomplished on October 18, 2025. A special detailed inspection(SDI) of the left pylon aft mount lugs would have been due at 29,200 cycles and of the left wing clevis support would have been due at 28,000 cycles. The accident airplane records showed these two SDI tasks had not been accomplished (the airplane had 21,043 cycles). Safety Actions UPS grounded their MD-11 fleet on November 7, 2025, as a precautionary measure and at the recommendation of Boeing. The FAA issued Emergency Airworthiness Directive (AD) 2025-23-51 on November 8, 2025, that prohibited further flight of MD-11 and MD-11F airplanes until they were inspected and all applicable corrective actions were performed using a method approved by the FAA Continued Operational Safety Branch (AIR-520). The FAA subsequently issued Emergency AD 2025-23-53 on November 14, 2025, which superseded Emergency AD 2025-23-51 and included both MD-11 and DC-10 series airplanes, the latter based on their similar design to the MD-11. Similar Events On May 25, 1979, about 1504 central daylight time, American Airlines flight 191,a McDonnell-Douglas DC-10-10 aircraft, crashed into an open field just short of a trailer park about 4,600 ft northwest of the departure end of runway 32R at Chicago-O'Hare International Airport, Chicago, Illinois. Flight 191 was taking off from runway 32R. The weather was clear and the visibility was 15 miles. During the takeoff rotation, the left engine and pylon assembly and about 3 ft of the leading edge of the left wing separated from the airplane and fell to the runway. Flight 191 continued to climb to about 325 ft agl and then began to roll to the left. The airplane continued to roll to the left until the wings were past the vertical position, and during the roll, the airplane's nose pitched down below the horizon. Flight 191 crashed into the open field and the wreckage scattered into an adjacent trailer park. The airplane was destroyed in the crash and subsequent fire. Two hundred and seventy-one persons on board Flight 191 were killed; two persons on the ground were killed, and two others were seriously injured. An old aircraft hangar, several automobiles, and a mobile home were destroyed. The NTSB investigated American Airlines flight 191 accident, see NTSB No. DCA79AA017 and aircraft accident report AAR-79-17. The NTSB’s investigation of UPS flight 2976 is ongoing.

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Takeoff: Part(s) separation from AC](https://openairdocs.org/ntsb-events/338) (defining event); cases with it: [Mcdonnell Douglas MD-11F, 1 case](https://openairdocs.org/ntsb-events/338/sequence.md?model=3023600), [All aircraft, 563 cases](https://openairdocs.org/ntsb-events/338/sequence.md)
- [Takeoff: Collision during takeoff/land](https://openairdocs.org/ntsb-events/490); cases with it: [Mcdonnell Douglas MD-11F, 1 case](https://openairdocs.org/ntsb-events/490/sequence.md?model=3023600), [All aircraft, 1,309 cases](https://openairdocs.org/ntsb-events/490/sequence.md)

## Aircraft

- Registration: [N259UP](https://openairdocs.org/deregistered/N259UP-2026-02-20), registration cancelled 2026-02-20, S/N 48417, built 1991 (OpenAirDocs)
- Reported make and model: MCDONNELL DOUGLAS MD-11F
- Registry model: [Mcdonnell Douglas MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (registry code 3023600) (OpenAirDocs)
- Registry engine: [GE CF6-80C2D1F](https://openairdocs.org/engine/ge-cf6-80c2d1f) (registry code 30110, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Serial number: 48417
- Year built: 1991
- Airframe hours: 92992.9
- Damage: Destroyed
- Fire: Both
- Flight: Part 121
- Operator: United Parcel Service Co
- Registered owner: United Parcel Service Co
- Airworthiness certificate: Standard, Transport
- Last inspection: Continuous airworthiness, November 4, 2025
- Destination: PHNL, Honolulu, HI
- Flight plan: IFR
- Airport: SDF, Louisville Muhammad Ali Intl, runway 17R/35L, 11,887 × 150 ft, concrete
- Equipment: ADS-B, Angle of attack indicator, Auto-pilot, Data recorder, Electronic flight bag or handheld device, Electronic multifunction display, Electronic primary flight display, Onboard weather, Satellite tracking device, Stall warning system

## Weather

- Conditions: Visual (VMC), Day
- Wind: 120° at 6 knots
- Visibility: 10 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 63 °F, dew point 41 °F
- Altimeter: 30.22 inHg
- Observed at: KSDF
- METAR: METAR KSDF 042156Z 12006KT 10SM SCT200 BKN250 17/05 A3022 RMK AO2 SLP233 T01670050=

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 20251104016149A](https://openairdocs.org/incident/20251104016149A), Nov 4, 2025: Mcdonnell Douglas MD-11F, Louisville, KY, Destroyed, 14 fatal. The airplane took off from sdf about 1713 and video of the airplane shows the no. 1 (left) engine and pylon separating and subsequent fire on the left Wing.…

## Docket (123 files)

The files NTSB released with the investigation on May 19, 2026, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=201958. 1.3 GB in all.

- 1A - order of hearing (item 1, PDF, 2 pages, 97 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291413&FileExtension=pdf&FileName=1A%20-%20Order%20of%20Hearing_Redacted-Rel.pdf
- 1B - designation of chairwoman of board of inquiry (item 2, PDF, 2 pages, 120 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291811&FileExtension=pdf&FileName=1B%20-%20Designation%20of%20Chairwoman%20of%20Board%20of%20Inquiry_Redacted-Rel.pdf
- 1C - designation of hearing officer (item 3, PDF, 2 pages, 115 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291991&FileExtension=pdf&FileName=1C%20-%20Designation%20of%20Hearing%20Officer_Redacted-Rel.pdf
- 1D - designation of parties (item 4, PDF, 4 pages, 112 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20290911&FileExtension=pdf&FileName=1D%20-%20Designation%20of%20Parties_Redacted-Rel.pdf
- 1E - notice of investigative hearing (item 5, PDF, 2 pages, 146 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291252&FileExtension=pdf&FileName=1E%20-%20Notice%20of%20Investigative%20Hearing_Redacted-Rel.pdf
- 1F - statement of purpose (item 6, PDF, 3 pages, 652 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291821&FileExtension=pdf&FileName=1F%20-%20Statement%20of%20Purpose-Rel.pdf
- 1G - witness list (item 7, PDF, 4 pages, 613 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20369248&FileExtension=pdf&FileName=1G%20-%20Witness%20List-Rel.pdf
- 1H - witness professional biographies (item 8, PDF, 7 pages, 765 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20333393&FileExtension=pdf&FileName=1H%20-%20Witness%20Professional%20Biographies-Rel.pdf
- 1I - hearing exhibit list (item 9, PDF, 9 pages, 538 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20369345&FileExtension=pdf&FileName=1I%20-%20Hearing%20Exhibit%20List-Rel.pdf
- 1J - board of inquiry and technical panel biographies (item 10, PDF, 9 pages, 784 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20336203&FileExtension=pdf&FileName=1J%20-%20Board%20of%20Inquiry%20and%20Technical%20Panel%20Biographies-Rel.pdf
- 2A - operations-hp group chairmen's factual report (item 11, PDF, 46 pages, 2.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291831&FileExtension=pdf&FileName=2A%20-%20Operations-HP%20Group%20Chairmen%27s%20Factual%20Report-Rel.pdf
- 2B - operations-hp group chairmen's factual report attachment 1 - interview transcripts (item 12, PDF, 246 pages, 6.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20379214&FileExtension=pdf&FileName=2B%20-%20Operations-HP%20Group%20Chairmen%27s%20Factual%20Report%20Attachment%201%20-%20Interview%20Transcripts_Redacted-Rel.pdf
- 2C - operations-hp group chairmen's factual report attachment 2 - interview summaries and witness statements (item 13, PDF, 13 pages, 222 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20363458&FileExtension=pdf&FileName=2C%20-%20Operations-HP%20Group%20Chairmen%27s%20Factual%20Report%20Attachment%202%20-%20Interview%20Summaries%20and%20Witness%20Statements_Redacted-Rel.pdf
- 2D - operations-hp group chairmen's factual report attachment 3 - operational flight plan (item 14, PDF, 9 pages, 1.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20292001&FileExtension=pdf&FileName=2D%20-%20Operations-HP%20Group%20Chairmen%27s%20Factual%20Report%20Attachment%203%20-%20Operational%20Flight%20Plan_redacted-Rel.pdf
- 2E - operations-hp group chairmen's factual report attachment 4 - takeoff performance data (item 15, PDF, 4 pages, 149 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291345&FileExtension=pdf&FileName=2E%20-%20Operations-HP%20Group%20Chairmen%27s%20Factual%20Report%20Attachment%204%20-%20Takeoff%20Performance%20Data-Rel.pdf
- 2F - operations-hp group chairmen's factual report attachment 5 - family and friend interview summaries (item 16, PDF, 8 pages, 357 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20362147&FileExtension=pdf&FileName=2F%20-%20Operations-HP%20Group%20Chairmen%27s%20Factual%20Report%20Attachment%205%20-%20Family%20and%20Friend%20Interview%20Summaries_Redacted-Rel.pdf
- 2G - operations-hp group chairmen's factual report attachment 6 - acars message traffic excerpts (item 17, PDF, 8 pages, 574 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20379417&FileExtension=pdf&FileName=2G%20-%20Operations-HP%20Group%20Chairmen%27s%20Factual%20Report%20Attachment%206%20-%20ACARS%20Message%20Traffic%20Excerpts_Redacted-Rel.pdf
- 2H - operations-hp group chairmen's factual report attachment 7 - ups load planning manual excerpts (item 18, PDF, 10 pages, 304 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291365&FileExtension=pdf&FileName=2H%20-%20Operations-HP%20Group%20Chairmen%27s%20Factual%20Report%20Attachment%207%20-%20UPS%20Load%20Planning%20Manual%20Excerpts-Rel.pdf
- 3A - ATC specialist's factual report (item 19, PDF, 22 pages, 2.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291946&FileExtension=pdf&FileName=3A%20-%20ATC%20Specialist%27s%20Factual%20Report-Rel.pdf
- 3B - ATC specialist's factual report attachment 1 - FAA aircraft accident package (item 20, PDF, 42 pages, 16.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20290931&FileExtension=pdf&FileName=3B%20-%20ATC%20Specialist%27s%20Factual%20Report%20Attachment%201%20-%20FAA%20Aircraft%20Accident%20Package_Redacted-Rel.pdf
- 3C - ATC specialist's factual report attachment 2 - sdf ATC audio recording (tower controller in charge position) (item 21, WAV, 65.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20036698&FileExtension=wav&FileName=Attachment%202%20SDF%20ATC%20Audio%20Recording%20(Tower%20Controller%20in%20Charge%20Position)-Rel.wav
- 3D - ATC specialist's factual report attachment 3 - sdf ATC audio recording (TRACON controller in charge position) (item 22, WAV, 65.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20037161&FileExtension=wav&FileName=Attachment%203%20SDF%20ATC%20Audio%20Recording%20(TRACON%20Controller%20in%20Charge%20Position)-Rel.wav
- 3E - ATC specialist's factual report attachment 4 - sdf ATC audio recording (local control east position) (item 23, WAV, 65.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20037460&FileExtension=wav&FileName=Attachment%204%20SDF%20ATC%20Audio%20Recording%20(Local%20Control%20East%20Position)-Rel.wav
- 3F - ATC specialist's factual report attachment 5 - sdf ATC audio recording (ground control position) (item 24, WAV, 65.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20036708&FileExtension=wav&FileName=Attachment%205%20SDF%20ATC%20Audio%20Recording%20(Ground%20Control%20Position)-Rel.wav
- 3G - ATC specialist's factual report attachment 6 - sdf ATC audio recording (ground control east position) (item 25, WAV, 551 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20036436&FileExtension=wav&FileName=Attachment%206%20SDF%20ATC%20Audio%20Recording%20(Ground%20Control%20East%20Position)-Rel.wav
- 3H - ATC specialist's factual report attachment 7 - sdf ATIS recording (item 26, WAV, 19.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20037358&FileExtension=wav&FileName=Attachment%207%20SDF%20ATIS%20Recording-Rel.wav
- 3I - ATC specialist's factual report attachment 8 - UPS2976 ADS-B data (item 27, ZIP, 70 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20081582&FileExtension=zip&FileName=Attachment%208%20UPS2976%20ADS-B%20Data-Rel.zip
- 3J - ATC specialist's factual report attachment 9 - sdf ATCT administrative and staffing documents (item 28, PDF, 8 pages, 1.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291433&FileExtension=pdf&FileName=3J%20-%20ATC%20Specialist%27s%20Factual%20Report%20Attachment%209%20-%20SDF%20ATCT%20Administrative%20and%20Staffing%20Documents_Redacted-Rel.pdf
- 3K - ATC specialist's factual report attachment 10 - sdf ATC audio recording (tower crash phone) (item 29, MP4, 274 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20080587&FileExtension=mp4&FileName=Attachment%2010%20SDF%20ATC%20Audio%20Recording%20(Tower%20Crash%20Phone)-Rel.mp4
- 3L - ATC specialist's factual report attachment 11 - air traffic controllers witness statements (item 30, PDF, 8 pages, 632 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20292183&FileExtension=pdf&FileName=3L%20-%20ATC%20Specialist%27s%20Factual%20Report%20Attachment%2011%20-%20Air%20Traffic%20Controllers%20Witness%20Statements_Redacted-Rel.pdf
- 7A - structures group chairmana��s factual report (item 31, PDF, 63 pages, 8.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20360134&FileExtension=pdf&FileName=7A%20-%20Structures%20Group%20Chairman%E2%80%99s%20Factual%20Report-Rel.pdf
- 7B - structures group chairmana��s factual report attachment 1 - type certificate data sheet A22WE (item 32, PDF, 52 pages, 507 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291443&FileExtension=pdf&FileName=7B%20-%20Structures%20Group%20Chairman%E2%80%99s%20Factual%20Report%20Attachment%201%20-%20Type%20Certificate%20Data%20Sheet%20A22WE-Rel.pdf
- 7C - structures group chairmana��s factual report attachment 2 - 14 CFR 25.571 history (item 33, PDF, 12 pages, 245 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291956&FileExtension=pdf&FileName=7C%20-%20Structures%20Group%20Chairman%E2%80%99s%20Factual%20Report%20Attachment%202%20-%2014%20CFR%2025.571%20History-Rel.pdf
- 7D - structures group chairmana��s factual report attachment 3 - DCA79AA017 final report NTSB-AAR-79-17 (item 34, PDF, 106 pages, 39.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20290941&FileExtension=pdf&FileName=7D%20-%20Structures%20Group%20Chairman%E2%80%99s%20Factual%20Report%20Attachment%203%20-%20DCA79AA017%20Final%20Report%20NTSB-AAR-79-17-Rel.pdf
- 7E - structures group chairmana��s factual report attachment 4 - DCA79AA017 recommendations report (item 35, PDF, 34 pages, 378 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20291841&FileExtension=pdf&FileName=7E%20-%20Structures%20Group%20Chairman%E2%80%99s%20Factual%20Report%20Attachment%204%20-%20DCA79AA017%20Recommendations%20Report-Rel.pdf
- 7F (item 36, PDF, 38 pages, 4.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20380067&FileExtension=pdf&FileName=7F%20-%20Structures%20Group%20Chairman%E2%80%99s%20Factual%20Report%20Attachment%205%20-%20MD-11%20Fleet%20Findings_Redacted-Rel.pdf
- 7G - structures group chairmana��s factual report attachment 6 - Boeing communications (item 37, PDF, 25 pages, 3.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334504&FileExtension=pdf&FileName=7G%20-%20Structures%20Group%20Chairman%E2%80%99s%20Factual%20Report%20Attachment%206%20-%20Boeing%20Communications_Redacted-Rel.pdf
- 7H - structures group chairmana��s factual report attachment 7 - N259UP timeline (item 38, PDF, 3 pages, 229 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20340740&FileExtension=pdf&FileName=7H%20-%20Structures%20Group%20Chairman%E2%80%99s%20Factual%20Report%20Attachment%207%20-%20N259UP%20Timeline-Rel.pdf
- 7I - structures group - Boeing eqa report - thrust links (item 39, PDF, 16 pages, 8.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20310527&FileExtension=pdf&FileName=7I%20-%20Structures%20Group%20-%20Boeing%20EQA%20Report%20-%20Thrust%20Links_redacted-Rel.pdf
- 7J - structures group - DC-10 service bulletins (item 40, PDF, 52 pages, 1.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20365492&FileExtension=pdf&FileName=7J%20-%20Structures%20Group%20-%20DC-10%20Service%20Bulletins_Redacted-Rel.pdf
- 7K - structures group - ups MD-11 inspection results (item 41, PDF, 7 pages, 1.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20310868&FileExtension=pdf&FileName=7K%20-%20Structures%20Group%20-%20UPS%20MD-11%20Inspection%20Results-Rel.pdf
- 7L - structures group - boeing-faa correspondence on ali (item 42, PDF, 10 pages, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334380&FileExtension=pdf&FileName=7L%20-%20Structures%20Group%20-%20Boeing-FAA%20Correspondence%20on%20ALI_Redacted-Rel.pdf
- 7M - structures group - cosp 2007-0763 (item 43, PDF, 2 pages, 99 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20351131&FileExtension=pdf&FileName=7M%20-%20Structures%20Group%20-%20COSP%202007-0763_Redacted-Rel.pdf
- 7N - structures group - FAA cos overview presentation (item 44, PDF, 20 pages, 4.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20366327&FileExtension=pdf&FileName=7N%20-%20Structures%20Group%20-%20FAA%20COS%20Overview%20Presentation_Redacted-Rel.pdf
- 7O - structures group - FAA cos history presentation (item 45, PDF, 14 pages, 3.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20366540&FileExtension=pdf&FileName=7O%20-%20Structures%20Group%20-%20FAA%20COS%20History%20Presentation_Redacted-Rel.pdf
- 7P - structures group - service letter MD-11-SL-00-104 original and revision c (item 46, PDF, 14 pages, 2.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20333481&FileExtension=pdf&FileName=7P%20-%20Structures%20Group%20-%20Service%20Letter%20MD-11-SL-00-104%20Original%20and%20Revision%20C_Redacted-Rel.pdf
- 7Q - boeing-faa partnership meetings for cosp 2007-0720 (item 47, PDF, 51 pages, 3.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20374748&FileExtension=pdf&FileName=7Q%20-%20Boeing-FAA%20Partnership%20Meetings%20for%20COSP%202007-0720_Redacted-Rel.pdf
- 7R - structures group - cos working agreement - excerpts of faa-boeing south December 2005 (item 48, PDF, 23 pages, 6.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20374900&FileExtension=pdf&FileName=7R%20-%20Structures%20Group%20-%20COS%20Working%20Agreement%20-%20Excerpts%20of%20FAA-Boeing%20South%20December%202005_Redacted-Rel.pdf
- 7S - structures group - cos working agreement - excerpts of faa-bca unified September 2016 (item 49, PDF, 50 pages, 18.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20374053&FileExtension=pdf&FileName=7S%20-%20Structures%20Group%20-%20COS%20Working%20Agreement%20-%20Excerpts%20of%20FAA-BCA%20unified%20September%202016_Redacted-Rel.pdf
- 7T - Boeing continued operational safety overview slides for NTSB investigative hearing (item 50, PDF, 15 pages, 1.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20374238&FileExtension=pdf&FileName=7T%20-%20Boeing%20Continued%20Operational%20Safety%20Overview%20Slides%20for%20NTSB%20Investigative%20Hearing-Rel.pdf
- 7U - Boeing pylon design overview slides for NTSB investigative hearing (item 51, PDF, 8 pages, 1.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334320&FileExtension=pdf&FileName=7U%20-%20Boeing%20Pylon%20Design%20Overview%20Slides%20for%20NTSB%20Investigative%20Hearing-Rel.pdf
- 7V - FAA cos slides for NTSB investigative hearing (item 52, PDF, 4 pages, 529 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20371698&FileExtension=pdf&FileName=7V%20-%20FAA%20COS%20Slides%20for%20NTSB%20Investigative%20Hearing-Rel.pdf
- 7W - FAA SDR slides for NTSB investigative hearing (item 53, PDF, 12 pages, 4.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20365914&FileExtension=pdf&FileName=7W%20-%20FAA%20SDR%20Slides%20for%20NTSB%20Investigative%20Hearing_Redacted-Rel.pdf
- 7X - Boeing white paper on pylon structures and systems design (item 54, PDF, 11 pages, 1.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20342839&FileExtension=pdf&FileName=7X%20-%20Boeing%20White%20Paper%20on%20Pylon%20Structures%20and%20Systems%20Design-Rel.pdf
- 7Y - structures group - Boeing materials and process engineering report LR-16256 (item 55, PDF, 20 pages, 13.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20362013&FileExtension=pdf&FileName=7Y%20-%20Structures%20Group%20-%20Boeing%20Materials%20and%20Process%20Engineering%20Report%20LR-16256_Redacted-Rel.pdf
- 7Z - timeline of reported pylon aft mount spherical bearing outer race fractures (item 56, PDF, 2 pages, 2.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20369799&FileExtension=pdf&FileName=7Z%20-%20Timeline%20of%20Reported%20Pylon%20Aft%20Mount%20Spherical%20Bearing%20Outer%20Race%20Fractures-Rel.pdf
- 7AA - photos of exemplar MD-11 pylon aft mount bulkhead (item 57, PDF, 11 pages, 28.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20403151&FileExtension=pdf&FileName=7AA%20-%20Photos%20of%20Exemplar%20MD-11%20Pylon%20Aft%20Mount%20Bulkhead-Rel.pdf
- 8A - powerplants group chairman's factual report (item 58, PDF, 87 pages, 13.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20311503&FileExtension=pdf&FileName=8A%20-%20Powerplants%20Group%20Chairman%27s%20Factual%20Report-Rel.pdf
- 8B - powerplants group chairman's factual report attachment 1 - ge aerospace metallurgical investigation report (item 59, PDF, 25 pages, 7.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20311776&FileExtension=pdf&FileName=8B%20-%20Powerplants%20Group%20Chairman%27s%20Factual%20Report%20Attachment%201%20-%20GE%20Aerospace%20Metallurgical%20Investigation%20Report-Rel.pdf
- 9A - systems group chairman's factual report (item 60, PDF, 91 pages, 22.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20362003&FileExtension=pdf&FileName=9A%20-%20Systems%20Group%20Chairman%27s%20Factual%20Report%20DCA26MA024-Rel.pdf
- 9B - systems group - MD-11 fire shutoff valve location and routing (item 61, PDF, 2 pages, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20361881&FileExtension=pdf&FileName=9B%20-%20Systems%20Group%20-%20MD-11%20Fire%20Shutoff%20Valve%20Location%20and%20Routing-Rel.pdf
- 9C - systems group - excerpts of FAA regulations and guidance (item 62, PDF, 19 pages, 619 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20372094&FileExtension=pdf&FileName=9C%20-%20Systems%20Group%20-%20Excerpts%20of%20FAA%20Regulations%20and%20Guidance-Rel.pdf
- 10A - flight data recorder group chairman's factual report (item 63, PDF, 34 pages, 7.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20311687&FileExtension=pdf&FileName=10A%20-%20Flight%20Data%20Recorder%20Group%20Chairman%27s%20Factual%20Report-Rel.pdf
- 10B - flight data recorder group chairman's factual report attachment 1 - FDR tabular data (item 64, CSV, 11.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20311210&FileExtension=csv&FileName=10B%20-%20Flight%20Data%20Recorder%20Group%20Chairman%27s%20Factual%20Report%20Attachment%201%20-%20FDR%20Tabular%20Data-Rel.csv
- 11A - maintenance group chairman's factual report (item 65, PDF, 28 pages, 1.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20310561&FileExtension=pdf&FileName=11A%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report-Rel.pdf
- 11B - maintenance group chairman's factual report attachment 1 - air carrier certificates (item 66, PDF, 3 pages, 1.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334434&FileExtension=pdf&FileName=11B%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%201%20-%20Air%20Carrier%20Certificates_Redacted-Rel.pdf
- 11C - maintenance group chairman's factual report attachment 2 - operation specifications (item 67, PDF, 56 pages, 6.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20362129&FileExtension=pdf&FileName=11C%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%202%20-%20Operation%20Specifications_Redacted-Rel.pdf
- 11D - maintenance group chairman's factual report attachment 3 - N259UP weight and balance (item 68, PDF, 6 pages, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20379877&FileExtension=pdf&FileName=11D%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%203%20-%20N259UP%20Weight%20and%20Balance_Redacted-Rel.pdf
- 11E - maintenance group chairman's factual report attachment 4 - AD compliance summary report airframe (item 69, PDF, 19 pages, 2.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20379887&FileExtension=pdf&FileName=11E%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%204%20-%20AD%20Compliance%20Summary%20Report%20Airframe_Redacted-Rel.pdf
- 11F - maintenance group chairman's factual report attachment 5 - AD compliance summary report engine 1 (item 70, PDF, 9 pages, 1.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20380488&FileExtension=pdf&FileName=11F%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%205%20-%20AD%20Compliance%20Summary%20Report%20Engine%201_Redacted-Rel.pdf
- 11G - maintenance group chairman's factual report attachment 6 - AD compliance summary report engine 2 (item 71, PDF, 9 pages, 1.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20380498&FileExtension=pdf&FileName=11G%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%206%20-%20AD%20Compliance%20Summary%20Report%20Engine%202_Redacted-Rel.pdf
- 11H - maintenance group chairman's factual report attachment 7 - AD compliance summary report engine 3 (item 72, PDF, 8 pages, 1.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20380508&FileExtension=pdf&FileName=11H%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%207%20-%20AD%20Compliance%20Summary%20Report%20Engine%203_Redacted-Rel.pdf
- 11I - maintenance group chairman's factual report attachment 8 - major repair status report (item 73, PDF, 11 pages, 153 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334264&FileExtension=pdf&FileName=11I%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%208%20-%20Major%20Repair%20Status%20Report-Rel.pdf
- 11J - maintenance group chairman's factual report attachment 9 - major alterations status report (item 74, PDF, 2 pages, 62 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334586&FileExtension=pdf&FileName=11J%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%209%20-%20Major%20Alterations%20Status%20Report-Rel.pdf
- 11K - maintenance group chairman's factual report attachment 10 - time controlled components report (item 75, PDF, 44 pages, 4.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20380085&FileExtension=pdf&FileName=11K%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2010%20-%20Time%20Controlled%20Components%20Report_Redacted-Rel.pdf
- 11L - maintenance group chairman's factual report attachment 11 - supplemental type certificates (item 76, PDF, 4 pages, 63 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334741&FileExtension=pdf&FileName=11L%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2011%20-%20Supplemental%20Type%20Certificates-Rel.pdf
- 11M - maintenance group chairman's factual report attachment 12 - service bulletin listing (item 77, PDF, 8 pages, 165 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334645&FileExtension=pdf&FileName=11M%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2012%20-%20Service%20Bulletin%20Listing-Rel.pdf
- 11N - maintenance group chairman's factual report attachment 13 - 60-DAY maintenance review - historical faults (item 78, PDF, 622 pages, 68.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20379855&FileExtension=pdf&FileName=11N%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2013%20-%2060-Day%20Maintenance%20Review%20-%20Historical%20Faults_Redacted-Rel.pdf
- 11O - maintenance group chairman's factual report attachment 14 - service difficulty report for pylon-10-5-2019 (item 79, PDF, 2 pages, 338 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334182&FileExtension=pdf&FileName=11O%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2014%20-%20Service%20Difficulty%20Report%20for%20Pylon-10-5-2019-Rel.pdf
- 11P - maintenance group chairman's factual report attachment 15 - engineering order (eo) MD11-5100-58054-B (item 80, PDF, 4 pages, 673 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334454&FileExtension=pdf&FileName=11P%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2015%20-%20Engineering%20Order%20(EO)%20MD11-5100-58054-B_Redacted-Rel.pdf
- 11Q - maintenance group chairman's factual report attachment 16 - technical document evaluation form-5-21-2008 (item 81, PDF, 2 pages, 1.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334751&FileExtension=pdf&FileName=11Q%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2016%20-%20Technical%20Document%20Evaluation%20Form-5-21-2008_Redacted-Rel.pdf
- 11R - maintenance group chairman's factual report attachment 17 - technical document evaluation form-2-9-2011 (item 82, PDF, 2 pages, 154 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334655&FileExtension=pdf&FileName=11R%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2017%20-%20Technical%20Document%20Evaluation%20Form-2-9-2011_Redacted-Rel.pdf
- 11S - maintenance group chairman's factual report attachment 18 - ups MD-11 task card 7024 (item 83, PDF, 8 pages, 4.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20333534&FileExtension=pdf&FileName=11S%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2018%20-%20UPS%20MD-11%20Task%20Card%207024_Redacted-Rel.pdf
- 11T - maintenance group chairman's factual report attachment 19 - ups MD-11 task card 7104 (item 84, PDF, 18 pages, 10.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334192&FileExtension=pdf&FileName=11T%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2019%20-%20UPS%20MD-11%20Task%20Card%207104_Redacted-Rel.pdf
- 11U - maintenance group chairman's factual report attachment 20 - amm 54-05-03-210-801 (item 85, PDF, 6 pages, 921 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20356619&FileExtension=pdf&FileName=11U%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2020%20-%20AMM%2054-05-03-210-801_Redacted-Rel.pdf
- 11V - maintenance group chairman's factual report attachment 21 - amm 54-05-03-211-802 (item 86, PDF, 3 pages, 661 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20356464&FileExtension=pdf&FileName=11V%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2021%20-%20AMM%2054-05-03-211-802_Redacted-Rel.pdf
- 11W - maintenance group chairman's factual report attachment 22 - service letter MD-11-SL-54-104 (item 87, PDF, 7 pages, 4.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334596&FileExtension=pdf&FileName=11W%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2022%20-%20Service%20Letter%20MD-11-SL-54-104-Rel.pdf
- 11X - maintenance group chairman's factual report attachment 23 - service letter MD-11-SL-54-104-A (item 88, PDF, 8 pages, 233 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334464&FileExtension=pdf&FileName=11X%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2023%20-%20Service%20Letter%20MD-11-SL-54-104-A-Rel.pdf
- 11Y - maintenance group chairman's factual report attachment 24 - interview transcripts (item 89, PDF, 486 pages, 3.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20374683&FileExtension=pdf&FileName=11Y%20-%20Maintenance%20Group%20Chairman%27s%20Factual%20Report%20Attachment%2024%20-%20Interview%20Transcripts_Redacted-Rel.pdf
- 11Z - ste san antonio aerospace slides for NTSB investigative hearing (item 90, PDF, 7 pages, 763 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334665&FileExtension=pdf&FileName=11Z%20-%20STE%20San%20Antonio%20Aerospace%20Slides%20for%20NTSB%20Investigative%20Hearing-Rel.pdf
- 11AA - ups slides for NTSB investigative hearing (item 91, PDF, 14 pages, 1.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20333544&FileExtension=pdf&FileName=11AA%20-%20UPS%20Slides%20for%20NTSB%20Investigative%20Hearing-Rel.pdf
- 11AB - maintenance group - amm 54-51-06-200-801 through -803 (item 92, PDF, 10 pages, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20365428&FileExtension=pdf&FileName=11AB%20-%20Maintenance%20Group%20-%20AMM%2054-51-06-200-801%20through%20-803_Redacted-Rel.pdf
- 12A - cockpit voice recorder - group chairman's factual report (item 93, PDF, 47 pages, 2 photos, 675 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20370612&FileExtension=pdf&FileName=12A-DCA26MA024_CVR-Rel.pdf
- 12B - cockpit voice recorder sound spectrum - specialist's study (item 94, PDF, 17 pages, 8 photos, 889 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20423619&FileExtension=pdf&FileName=12B-DCA26MA024_CVR_SpectrumStudy_REDACTED-Rel.pdf
- 15A - materials group chairman's factual report (item 95, PDF, 57 pages, 14.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334202&FileExtension=pdf&FileName=15A%20-%20Materials%20Group%20Chairman%27s%20Factual%20Report-Rel.pdf
- 16A - airports specialist's factual report (item 96, PDF, 9 pages, 684 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334350&FileExtension=pdf&FileName=16A%20-%20Airports%20Specialist%27s%20Factual%20Report-Rel.pdf
- 16B - airports specialist's factual report attachment 1 - sdf memorandum of agreement for emergency procedures (item 97, PDF, 7 pages, 1.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20380321&FileExtension=pdf&FileName=16B%20-%20Airports%20Specialist%27s%20Factual%20Report%20Attachment%201%20-%20SDF%20Memorandum%20of%20Agreement%20for%20Emergency%20Procedures_Redacted-Rel.pdf
- 16C - airports specialist's factual report attachment 2 - sdf full scale exercise outline (item 98, PDF, 17 pages, 4.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334606&FileExtension=pdf&FileName=16C%20-%20Airports%20Specialist%27s%20Factual%20Report%20Attachment%202%20-%20SDF%20Full%20Scale%20Exercise%20Outline_Redacted-Rel.pdf
- 16D - airports specialist's factual report attachment 3 - ARFF interview summary (item 99, PDF, 6 pages, 2.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334474&FileExtension=pdf&FileName=16D%20-%20Airports%20Specialist%27s%20Factual%20Report%20Attachment%203%20-%20ARFF%20Interview%20Summary_redacted-Rel.pdf
- 17A - hazardous materials group chairman's factual report (item 100, PDF, 30 pages, 7.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334212&FileExtension=pdf&FileName=17A%20-%20Hazardous%20Materials%20Group%20Chairman%27s%20Factual%20Report-Rel.pdf
- 17B - hazardous materials group chairman's factual report attachment 1 - uld specifications (item 101, PDF, 8 pages, 1.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334360&FileExtension=pdf&FileName=17B%20-%20Hazardous%20Materials%20Group%20Chairman%27s%20Factual%20Report%20Attachment%201%20-%20ULD%20Specifications_Redacted-Rel.pdf
- 17C - hazardous materials group chairman's factual report attachment 2 - dangerous goods notoc and ups load manifest (item 102, PDF, 4 pages, 619 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334484&FileExtension=pdf&FileName=17C%20-%20Hazardous%20Materials%20Group%20Chairman%27s%20Factual%20Report%20Attachment%202%20-%20Dangerous%20Goods%20NOTOC%20and%20UPS%20Load%20Manifest_Redacted-Rel.pdf
- 17D - hazardous materials group chairman's factual report attachment 3 - safety data sheets (item 103, PDF, 34 pages, 1.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334771&FileExtension=pdf&FileName=17D%20-%20Hazardous%20Materials%20Group%20Chairman%27s%20Factual%20Report%20Attachment%203%20-%20Safety%20Data%20Sheets_Redacted-Rel.pdf
- 17E - hazardous materials group chairman's factual report attachment 4 - gfl environmental services usa documents (item 104, PDF, 34 pages, 18.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334675&FileExtension=pdf&FileName=17E%20-%20Hazardous%20Materials%20Group%20Chairman%27s%20Factual%20Report%20Attachment%204%20-%20GFL%20Environmental%20Services%20USA%20documents%20_Redacted-Rel.pdf
- 17F - hazardous materials group chairman's factual report attachment 5 - imaac post-event simulation (item 105, PDF, 21 pages, 1.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20333554&FileExtension=pdf&FileName=17F%20-%20Hazardous%20Materials%20Group%20Chairman%27s%20Factual%20Report%20Attachment%205%20-%20IMAAC%20Post-Event%20Simulation-Rel.pdf
- 18A - medical specialist's factual report (item 106, PDF, 15 pages, 260 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334839&FileExtension=pdf&FileName=18A%20-%20Medical%20Specialist%27s%20Factual%20Report-Rel.pdf
- 18B - medical specialist's factual report attachment 1 - airplane crew FAA toxicology reports (item 107, PDF, 4 pages, 1.3 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20371284&FileExtension=pdf&FileName=18B%20Medical%20Specialist%27s%20Factual%20Report%20Attachment%201%20-%20Airplane%20Crew%20FAA%20Toxicology%20Reports-Rel.pdf
- 18C - medical specialist's factual report attachment 2 - dot post-accident incident drug alcohol test collection report (item 108, PDF, 3 pages, 357 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20339460&FileExtension=pdf&FileName=18C%20-%20Medical%20Specialist%27s%20Factual%20Report%20Attachment%202%20-%20DOT%20Post-Accident%20Incident%20Drug%20Alcohol%20Test%20Collection%20Report-Rel.pdf
- 18D - medical specialist's factual report attachment 3 - dot order 3910_1D drug and alcohol-free departmental workplace program (item 109, PDF, 94 pages, 1.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20339470&FileExtension=pdf&FileName=18D%20-%20Medical%20Specialist%27s%20Factual%20Report%20Attachment%203%20-%20DOT%20Order%203910_1D%20Drug%20and%20Alcohol-Free%20Departmental%20Workplace%20Prog-Rel.pdf
- 19A - video group chairman's image study (item 110, PDF, 20 pages, 2.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334370&FileExtension=pdf&FileName=19A%20-%20Video%20Group%20Chairman%27s%20Image%20Study-Rel.pdf
- 20A - unmanned aircraft system aerial imagery specialist's factual report (item 111, PDF, 8 pages, 908 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20334304&FileExtension=pdf&FileName=20A%20-%20Unmanned%20Aircraft%20System%20Aerial%20Imagery%20Specialist%27s%20Factual%20Report-Rel.pdf
- NTSB form 6120.1 (item 112, PDF, 10 pages, 1.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=19678190&FileExtension=pdf&FileName=6120.1%20Form%20(N259UP)_Redacted-Rel.pdf
- FAA emergency AD 2025-23-51 (item 113, PDF, 3 pages, 176 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20403161&FileExtension=pdf&FileName=FAA%20Emergency%20AD%202025-23-51_Redacted-Rel.pdf
- FAA emergency AD 2025-23-53 (item 114, PDF, 4 pages, 182 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20403586&FileExtension=pdf&FileName=FAA%20Emergency%20AD%202025-23-53_Redacted-Rel.pdf
- Investigative hearing - NTSB visuals (item 115, PDF, 4 pages, 4.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20404453&FileExtension=pdf&FileName=NTSB%20Investigative%20Hearing%20-%20Posters%20and%20Visuals-Rel.pdf
- Investigative hearing - iic presentation (item 116, PDF, 15 pages, 2.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20404354&FileExtension=pdf&FileName=IIC%20Presentation%20for%20NTSB%20Investigative%20Hearing-Rel.pdf
- Investigative hearing - day 1 transcript (item 117, PDF, 400 pages, 733 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20546319&FileExtension=pdf&FileName=Investigative%20Hearing%20-%20Day%201%20Transcript%20(DCA26MA024)_Redacted-Rel.pdf
- Investigative hearing - day 2 transcript (item 118, PDF, 165 pages, 394 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20546111&FileExtension=pdf&FileName=Investigative%20Hearing%20-%20Day%202%20Transcript%20(DCA26MA024)_Redacted-Rel.pdf
- Investigative hearing - federal aviation administration party submission (item 119, PDF, 4 pages, 595 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20543330&FileExtension=pdf&FileName=Investigative%20Hearing%20Party%20Submission%20-%20Federal%20Aviation%20Administration%20(DCA26MA024)_Redacted-Rel.pdf
- Investigative hearing - international brotherhood of teamsters party submission (item 120, PDF, 3 pages, 181 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20543372&FileExtension=pdf&FileName=Investigative%20Hearing%20Party%20Submission%20-%20International%20Brotherhood%20of%20Teamsters%20(DCA26MA024)-Rel.pdf
- Investigative hearing - ste san antonio aerospace party submission (item 121, PDF, 6 pages, 2.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20543506&FileExtension=pdf&FileName=Investigative%20Hearing%20Party%20Submission%20-%20STE%20San%20Antonio%20Aerospace%20(DCA26MA024)_Redacted-Rel.pdf
- Investigative hearing - the Boeing company party submission (item 122, PDF, 18 pages, 517 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20543208&FileExtension=pdf&FileName=Investigative%20Hearing%20Party%20Submission%20-%20The%20Boeing%20Company%20(DCA26MA024)_Redacted-Rel.pdf
- Investigative hearing - united parcel service party submission (item 123, PDF, 16 pages, 50 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=20543340&FileExtension=pdf&FileName=Investigative%20Hearing%20Party%20Submission%20-%20United%20Parcel%20Service%20(DCA26MA024)_Redacted-Rel.pdf

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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