# NTSB DCA01MA005: Douglas DC-9, N826AT, Atlanta, GA, November 29, 2000 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Major investigation · Final report - Date: November 29, 2000, 13:50 local (18:50 UTC) - Place: Atlanta, GA - Location: 33.7490° N, 84.3880° W: Placed by OpenAirDocs: center of Atlanta, GA, within about 7 miles (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=33.7490&lon=-84.3880&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 13 minor, 84 uninjured - Status: Completed, report May 8, 2003 - Report: Approved by Office Director - NTSB office: Major Investigations Division - Safety recommendations: Yes - NTSB case key (mKey): 50698 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA01MA005 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/50698/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=50698 - Page: https://openairdocs.org/ntsb/DCA01MA005 ## Probable cause the leakage of lavatory fluid from the airplane's forward lavatory onto electrical connectors, which caused shorting that led to a fire. Contributing to the accident were the inadequate servicing of the lavatory and the failure of maintenance to ensure reinstallation of the shield over the fuselage station 237 disconnect panel. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Airframe/component/system failure/malfunction, climb - electrical system,electric wiring - arcing (cause) - Fire, landing - electrical system,electric wiring - burned - fuselage,cabin - burned - fuselage,cargo compartment - burned ## Analysis Shortly after takeoff, the airplane experienced electrical problems, including numerous tripped circuit breakers. The flight crew requested a return to airport. During the landing rollout, the lead flight attendant and air traffic control personnel reported to the flight crew that smoke was coming from the left side of the airplane; subsequently, the flight crew initiated an emergency evacuation on one of the taxiways. Examination of the airplane revealed fire damage to the left, forward areas of the fuselage, cabin, and forward cargo compartment. The greatest amount of fire damage was found just aft of the electrical disconnect panel located at fuselage station 237. There was no evidence that the drip shield normally installed over the disconnect panel was present at the time of the accident. Bluish stains caused by lavatory rinse fluid were observed on surfaces near the disconnect panel on the accident airplane and in the same areas on another of AirTran's DC-9 airplanes. Examination of one of the connectors from the disconnect panel on the accident airplane revealed light-blue and turquoise-green deposits on its internal surfaces and evidence of shorting between the connector pins. It could not be determined when the drip shield over the disconnect panel was removed; however, this likely contributed to the lavatory fluid contamination of the connectors. Following the accident, AirTran revised its lavatory servicing procedures to emphasize the importance of completely draining the waste tank to avoid overflows. Boeing issued an alert service bulletin recommending that operators of DC-9 airplanes visually inspect the connectors at the FS 237 disconnect panel for evidence of lavatory rinse fluid contamination and that they install a drip shield over the disconnect panel. Boeing also issued a service letter to operators to stress the importance of properly sealing floor panels and adhering to lavatory servicing procedures specified in its DC-9 Maintenance Manual. The Safety Board is aware of two incidents involving the military equivalent of the DC-9 that involved circumstances similar to the accident involving N826AT. Drip shields were installed above the FS 237 disconnect panels on both airplanes. ## Factual narrative HISTORY OF FLIGHT On November 29, 2000, about 1550 eastern standard time (all times in this brief are eastern standard time based on a 24-hour clock), the flight crew of a McDonnell Douglas (McDonnell Douglas is now known as Boeing, Douglas Product Division) DC-9-32, N826AT, operating as AirTran Airways flight 956, executed an emergency landing at Hartsfield Atlanta International Airport (ATL), Atlanta, Georgia. Shortly after takeoff, the flight crew observed that several circuit breakers had tripped and several annunciator panel lights had illuminated. Subsequently, about 2 minutes after takeoff, the flight crew requested a return to ATL. After the landing, one of the flight attendants reported to the flight crew that smoke could be seen emanating from the left sidewall in the forward cabin; air traffic control (ATC) personnel also notified the flight crew that smoke was coming from the airplane. The flight crew then initiated an emergency evacuation on one of the taxiways. Airport rescue and firefighting (ARFF) personnel assisted in subduing the fire. Of the 2 flight crewmembers, 3 flight attendants, and 92 passengers on board, 13 passengers received minor injuries. The airplane sustained substantial damage. Flight 956 was operating under 14 Code of Federal Regulations Part 121 as a regularly scheduled passenger flight from ATL to Akron-Canton Regional Airport, Akron, Ohio. Visual meteorological conditions prevailed at the time of the accident. The captain was the pilot flying. About 1541, ATC cleared the flight for takeoff. At 1543:10, as the airplane was climbing through about 3,800 feet, the cockpit voice recorder (CVR) recorded popping sounds consistent with the sound of circuit breakers tripping, which continued for about 34 seconds. During postaccident interviews, both flight crewmembers stated that during this time, they noticed that several circuit breakers had tripped. The flight crew also noted that the MASTER CAUTION light, several annunciator panel lights, the left and right fuel pressure lights, and the radio rack fan OFF annunciator lights had illuminated. At 1543:28, the captain told the first officer to tell ATC that they wanted to level off at 4,000 feet and return to the airport because "right now we have electrical problems." The captain stated that he then glanced over his shoulder to check for smoke but did not observe any smoke at that time. The ATL north departure controller instructed flight 956 to maintain 4,000 feet and asked whether the flight would need the ARFF equipment available upon landing; the first officer replied that they would need the equipment available. The captain stated that he selected emergency power, took the generators offline, and switched the cabin pressurization to manual to stop the circuit breakers from tripping. The captain stated that during the descent, the left?side attitude directional indicator failed intermittently. He stated that, specifically, the failure flags appeared and the instrument was "jumpy." Further, he stated that the cockpit lights were flickering and that he was afraid that all of the cockpit instruments would fail. At 1544:47, flight data recorder data ceased, and, at 1544:51, there was an interruption of audio on all CVR channels. Intermittent CVR audio returned several minutes later and continued until 1549:11, at which time, the CVR recording ended (the airplane landed about 1 minute later). Signals from the airplane's radar transponder were also lost around 1544:51 but were regained briefly until they ended around the same time as the CVR recording ended. At 1549:40, flight 956 was cleared to land on either runway 26L or 26R. The captain stated that there was no visible smoke or smell of smoke in the cockpit before landing. About 1550, the airplane landed on runway 26R. The captain stated that the landing and rollout were normal. During the airplane's exit from the runway onto taxiway B-3, the lead flight attendant opened the cockpit door and announced that there was smoke in the cabin. A short time later, the lead flight attendant again opened the cockpit door and reported that the amount of smoke in the cabin had increased and asked the captain if he wanted to evacuate. The captain stated that he set the brakes and told the lead flight attendant that they would evacuate and that he would make an announcement to the passengers. However, the public address system had become inoperative, and the emergency evacuation commenced with the flight attendants making announcements to the passengers and directing the evacuation. The captain stated that the first officer completed the emergency evacuation checklist and exited the airplane. The captain then donned protective breathing equipment and proceeded through the cabin looking for any incapacitated passengers. He reported that the visibility in the first?class cabin was about 1 to 2 feet. He stated that he proceeded to the rear of the airplane to check the lavatories, at which time, he found the No. 3 flight attendant leaving with the last passenger. He reported that after ensuring that everyone had exited the airplane, he exited through the right overwing exit to further assist with the evacuation. DAMAGE TO AIRPLANE Examination of the airplane revealed fire damage to the left forward areas of the fuselage and cargo compartment from fuselage stations (FS) 237 to 313 and damage to the cabin floor and sidewall. Fire damage was concentrated in an area just aft of the electrical disconnect panel located at FS 237, which is a junction panel for seven wire bundles. The fuselage exterior also exhibited heat discoloration in an area beneath the lavatory service panel located between FS 237 and 256 and a soot trail that extended aft from the radio rack vent, located just aft of the lavatory service panel. Soot was also present throughout the forward cargo compartment and on the cabin outflow valve near the rear of the airplane. The floor structure and carpet of the passenger cabin exhibited fire damage from the left sidewall to the centerline of the airplane from FS 237 to 313. The seat tracks under seats 1A and 1C were buckled from heat exposure, the carpeting in front of seats 2A and 2C was burned and melted, and the floor in the aisle next to row 3 was spongy and buckled. Further examination of the interior area between the forward cargo compartment and the fuselage revealed bluish stains, similar in color to lavatory rinse fluid (also known as blue water) on sidewall insulation blankets and components near FS 237. No drip shield, which was designed to protect the connectors at FS 237 from overhead fluid leakage, was installed over the FS 237 disconnect panel at the time of the accident, although the support brackets for the drip shield were in place. The drip shield was incorporated into the design of DC-9 series airplanes beginning with fuselage line number 271, which included N826AT. N826AT was delivered with the drip shield installed, but investigators could not determine why the shield was not in place at the time of the accident. Of the first 270 DC-9s manufactured, 80 included a forward lavatory. The damaged wiring from the area around FS 237 was removed and sent to the Safety Board's materials laboratory for detailed examination. Beading was observed on the ends of many individual wires, which is consistent with heat damage from arcing. Each of the seven electrical connectors from the removed wire bundles was opened to determine the internal condition of the connector pins and grommet material. One connector exhibited more thermal damage than the other six and contained light-blue and turquoise-green crystalline deposits on the mating surfaces of its two sides and around nearly all of its pins. This connector also exhibited evidence of pin-to-pin shorts. Laboratory tests of the grommet material from this connector revealed elevated levels of sulfate ( ## Aircraft - Registration: [N826AT](https://openairdocs.org/deregistered/N826AT-2002-03-08), registration cancelled 2002-03-08, S/N 47359, built 1969 (OpenAirDocs) - Reported make and model: Douglas DC-9 - Registry model: [Douglas DC-9-32](https://openairdocs.org/model/douglas-dc-9-32) (registry code 3022066) (OpenAirDocs) - Registry engine: [Pratt & Whitney JT8D-1](https://openairdocs.org/engine/pratt-whitney-jt8d-1) (registry code 52044, turbo-jet) (OpenAirDocs) - Category: Airplane - Serial number: 47359 - Airframe hours: 78255 - Engines: Pratt & Whitney JT8D turbo fan - Damage: Substantial damage - Fire: Both - Flight: Part 121 - Operator: Airtran Airways Inc - Airworthiness certificate: Standard, Normal - Last inspection: Continuous airworthiness, November 29, 2000 - Destination: AKRON/CANTON, OH - Flight plan: IFR - Airport: ATL, The William B Hartsfield Atlan, runway 26R ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 38; injuries: none; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 12,000 total, 6,000 in this make and model - Co-pilot; age 25; injuries: none; airline transport; airplane ratings: single-engine land, multi-engine land; medical: class 1, valid medical--w/ waivers/lim; seat: right; flight hours: 3,100 total, 0 in this make and model ## Weather - Conditions: Day - Wind: 270° at 7 knots - Visibility: 4 statute miles - Lowest ceiling: 2,700 ft broken - Temperature: 52 °F, dew point 50 °F - Altimeter: 30.13 inHg - Observed at: KATL ## 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 20001129041599A](https://openairdocs.org/incident/20001129041599A), Nov 29, 2000: Doug DC932, Atlanta, GA, Substantial damage. (-23) Inflight fire under cabin floor caused by shorted/arced wiring. ## Docket (42 files) The files NTSB released with the investigation on January 29, 2002, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=50698. 56.8 MB in all. - Operations 2 - Factual Report of Group Chairman (item 1, .PDF, 670 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475113&FileExtension=.PDF&FileName=Operations%202%20-%20Factual%20Report%20of%20Group%20Chairman-Master.PDF - Operations 2 - Attachment 2A - Crew Pairing Print Report (item 2, .PDF, 78 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153062&FileExtension=.PDF&FileName=Operations%202%20-%20Attachment%202A%20-%20Crew%20Pairing%20Print%20Report-Master.PDF - Operations 2 - Attachment 2B - Excerpts from AirTran DC-9 Aircraft Operations Manual (item 3, .PDF, 307 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153063&FileExtension=.PDF&FileName=Operations%202%20-%20Attachment%202B%20-%20Excerpts%20from%20AirTran%20DC-9%20Aircraft%20Operations%20Manual-Master.PDF - Operations 2 - Attachment 2C - Excerpts from AirTran DC-9-30 Quick Reference Handbook (item 4, .PDF, 855 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153064&FileExtension=.PDF&FileName=Operations%202%20-%20Attachment%202C%20-%20Excerpts%20from%20AirTran%20DC-9-30%20Quick%20Reference%20Handbook-Master.PDF - Operations 2 - Attachment 2D - Copy of AirTran DC-9 Normal Checklist (item 5, .PDF, 151 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475110&FileExtension=.PDF&FileName=Operations%202%20-%20Attachment%202D%20-%20Copy%20of%20AirTran%20DC-9%20Normal%20Checklist-Master.PDF - Operations 2 - Attachment 2E - Copies of Pilot Training Records (item 6, .PDF, 186 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153066&FileExtension=.PDF&FileName=Operations%202%20-%20Attachment%202E%20-%20Copies%20of%20Pilot%20Training%20Records-Master.PDF - Operations 2 - Attachment 2F - Control Column Checklist (item 7, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153067&FileExtension=.PDF&FileName=Operations%202%20-%20Attachment%202F%20-%20Control%20Column%20Checklist-Master.PDF - Operations 2 - Attachment 2G - Copies of Flight Departure Papers (item 8, .PDF, 691 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153068&FileExtension=.PDF&FileName=Operations%202%20-%20Attachment%202G%20-%20Copies%20of%20Flight%20Departure%20Papers-Master.PDF - Operations 2 - Attachment 2H - Copies of Weight, Balance and Performance Information (item 9, .PDF, 713 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153069&FileExtension=.PDF&FileName=Operations%202%20-%20Attachment%202H%20-%20Copies%20of%20Weight,%20Balance%20and%20Performance%20Information-Master.PDF - Operations 2 - Attachment 2I - Copies of Air Traffic Control Transcripts (item 10, .PDF, 646 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475111&FileExtension=.PDF&FileName=Operations%202%20-%20Attachment%202I%20-%20Copies%20of%20Air%20Traffic%20Control%20Transcripts-Master.PDF - Survival Factors 6 - Factual Report of Group Chairman (item 11, .PDF, 503 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475112&FileExtension=.PDF&FileName=Survival%20Factors%206%20-%20Factual%20Report%20of%20Group%20Chairman-Master.PDF - Survival Factors 6 - Attachment 1 - Written Flight Attendant Statements (item 12, .PDF, 549 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153072&FileExtension=.PDF&FileName=Survival%20Factors%206%20-%20Attachment%201%20-%20Written%20Flight%20Attendant%20Statements-Master.PDF - Survival Factors 6 - Attachment 2 - Passenger Questionnaires (item 13, .PDF, 30.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40473226&FileExtension=.PDF&FileName=Survival%20Factors%206%20-%20Attachment%202%20-%20Passenger%20Questionnaires-Master.PDF - Survival Factors 6 - Attachment 3 - Passenger Safety Briefing Card (item 14, .PDF, 409 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153074&FileExtension=.PDF&FileName=Survival%20Factors%206%20-%20Attachment%203%20-%20Passenger%20Safety%20Briefing%20Card-Master.PDF - Survival Factors 6 - Attachment 4 - Photographs (item 15, .PDF, 177 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153075&FileExtension=.PDF&FileName=Survival%20Factors%206%20-%20Attachment%204%20-%20Photographs-Master.PDF - Survival Factors 6 - Attachment 5 - Injury Chart (item 16, .PDF, 67 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153076&FileExtension=.PDF&FileName=Survival%20Factors%206%20-%20Attachment%205%20-%20Injury%20Chart-Master.PDF - Survival Factors 6 - Attachment 6 - The William B. Hartsfield Atlanta International Airport - Airport Diagram (item 17, .PDF, 194 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153077&FileExtension=.PDF&FileName=Survival%20Factors%206%20-%20Attachment%206%20-%20The%20William%20B.%20Hartsfield%20Atlanta%20International%20Airport%20-%20Airport%20Diagram-Master.PDF - Survival Factors 6 - Attachment 7 - City of Atlanta Fire Department Final Incident Report (item 18, .PDF, 526 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153078&FileExtension=.PDF&FileName=Survival%20Factors%206%20-%20Attachment%207%20-%20City%20of%20Atlanta%20Fire%20Department%20Final%20Incident%20Report-Master.PDF - Survival Factors 6 - Attachment 8 - City of Atlanta Fire Department Critique of the Bid Bird 2000 (Operational Readiness Drill) (item 19, .PDF, 259 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153079&FileExtension=.PDF&FileName=Survival%20Factors%206%20-%20Attachment%208%20-%20City%20of%20Atlanta%20Fire%20Department%20Critique%20of%20the%20Bid%20Bird%202000%20(Operational%20Readiness%20Drill)-Master.PDF - Survival Factors 6 - Attachment 9 - Airport Operations Division Incident Form and Daily Events Log for November 29, 2000 (item 20, .PDF, 484 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153080&FileExtension=.PDF&FileName=Survival%20Factors%206%20-%20Attachment%209%20-%20Airport%20Operations%20Division%20Incident%20Form%20and%20Daily%20Events%20Log%20for%20November%2029,%202000-Master.PDF - Systems 9 - Systems and Fire Group Chairman Factual Report (item 21, .PDF, 3.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153081&FileExtension=.PDF&FileName=Systems%209%20-%20Systems%20and%20Fire%20Group%20Chairman%20Factual%20Report-Master.PDF - Flight Data Recorder 10 - Factual Report of Group Chairman (item 22, .PDF, 425 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153082&FileExtension=.PDF&FileName=Flight%20Data%20Recorder%2010%20-%20Factual%20Report%20of%20Group%20Chairman-Master.PDF - Maintenance Records 11 - Group Chairman Factual Report (item 23, .PDF, 248 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475114&FileExtension=.PDF&FileName=Maintenance%20Records%2011%20-%20Group%20Chairman%20Factual%20Report-Master.PDF - Maintenance Records 11 - Appendix A - DC-9-30 Fuselage Stations and Cabin Floor Panel Diagram (item 24, .PDF, 93 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153084&FileExtension=.PDF&FileName=Maintenance%20Records%2011%20-%20Appendix%20A%20-%20DC-9-30%20Fuselage%20Stations%20and%20Cabin%20Floor%20Panel%20Diagram-Master.PDF - Maintenance Records 11 - Appendix B - "C" Check Cards, Non-Routines, and Corrective Actions (item 25, .PDF, 3.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475115&FileExtension=.PDF&FileName=Maintenance%20Records%2011%20-%20Appendix%20B%20-%20%22C%22%20Check%20Cards,%20Non-Routines,%20and%20Corrective%20Actions-Master.PDF - Maintenance Records 11 - Appendix C - Relevant Log Pages (item 26, .PDF, 463 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475116&FileExtension=.PDF&FileName=Maintenance%20Records%2011%20-%20Appendix%20C%20-%20Relevant%20Log%20Pages-Master.PDF - Maintenance Records 11 - Addendum to Group Chairman's Factual Report Regarding Lavatory Servicing Procedures (item 27, .PDF, 58 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475117&FileExtension=.PDF&FileName=Maintenance%20Records%2011%20-%20Addendum%20to%20Group%20Chairman%27s%20Factual%20Report%20Regarding%20Lavatory%20Servicing%20Procedures-Master.PDF - Maintenance Records 11 - Addendum to Group Chairman's Factual Report Regarding Lavatory Servicing Procedures - Appendix A - Douglas Aircraft Company DC-9 Maintenance Manual Lavatory Servicing (Dated 7/15/66; 6/1/82; and 8/1/85) (item 28, .PDF, 469 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153088&FileExtension=.PDF&FileName=Maintenance%20Records%2011%20-%20Addendum%20to%20Group%20Chairman%27s%20Factual%20Report%20Regarding%20Lavatory%20Servicing%20Procedures%20-%20Appendix%20A%20-%20Douglas%20Aircraft%20Company%20DC-9%20Maintenance%20Manual%20Lavatory%20Servicing%20(Dated%207%2F15%2F66;%206%2F1%2F82;%20and%208%2F1%2F85)-Master.PDF - Maintenance Records 11 - Addendum to Group Chairman's Factual Report Regarding Lavatory Servicing Procedures - Appendix B - AirTran Airways Standard Practice Manual DC-9 Lavatory Servicing (In effect on November 29, 2000) (item 29, .PDF, 481 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153089&FileExtension=.PDF&FileName=Maintenance%20Records%2011%20-%20Addendum%20to%20Group%20Chairman%27s%20Factual%20Report%20Regarding%20Lavatory%20Servicing%20Procedures%20-%20Appendix%20B%20-%20AirTran%20Airways%20Standard%20Practice%20Manual%20DC-9%20Lavatory%20Servicing%20(In%20effect%20on%20November%2029,%202000)-Master.PDF - Maintenance Records 11 - Addendum to Group Chairman's Factual Report Regarding Lavatory Servicing Procedures - Appendix C - AirTran Airways Standard Practice Manual Lavatory Servicing for all aircraft. (Revision Date June 1, 2001) (item 30, .PDF, 1.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153090&FileExtension=.PDF&FileName=Maintenance%20Records%2011%20-%20Addendum%20to%20Group%20Chairman%27s%20Factual%20Report%20Regarding%20Lavatory%20Servicing%20Procedures%20-%20Appendix%20C%20-%20AirTran%20Airways%20Standard%20Practice%20Manual%20Lavatory%20Servicing%20for%20all%20aircraft.%20(Revision%20Date%20June%201,%202001)-Master.PDF - Cockpit Voice Recorder 12 - Factual Report of Group Chairman (item 31, .PDF, 841 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153091&FileExtension=.PDF&FileName=Cockpit%20Voice%20Recorder%2012%20-%20Factual%20Report%20of%20Group%20Chairman-Master.PDF - Hazardous Material 17 - Factual Report of Group Chairman (item 32, .PDF, 247 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475118&FileExtension=.PDF&FileName=Hazardous%20Material%2017%20%20-%20Factual%20Report%20of%20Group%20Chairman-Master.PDF - Hazardous Material 17 - Appendix A - Information from AirTran (item 33, .PDF, 3.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475119&FileExtension=.PDF&FileName=Hazardous%20Material%2017%20-%20Appendix%20A%20-%20Information%20from%20AirTran-Master.PDF - Hazardous Material 17 - Appendix B - Information from the Federal Aviation Administration (item 34, .PDF, 1.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475120&FileExtension=.PDF&FileName=Hazardous%20Material%2017%20-%20Appendix%20B%20-%20Information%20from%20the%20Federal%20Aviation%20Administration-Master.PDF - Hazardous Material 17 - Appendix C - Information on the ASAP Shipment (item 35, .PDF, 203 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475121&FileExtension=.PDF&FileName=Hazardous%20Material%2017%20-%20Appendix%20C%20-%20Information%20on%20the%20ASAP%20Shipment-Master.PDF - Hazardous Material 17 - Appendix D - Miscellaneous Interviews (item 36, .PDF, 216 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475122&FileExtension=.PDF&FileName=Hazardous%20Material%2017%20-%20Appendix%20D%20-%20Miscellaneous%20Interviews-Master.PDF - Hazardous Material 17 - Appendix E - Baggage Inspection Record (item 37, .PDF, 286 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153097&FileExtension=.PDF&FileName=Hazardous%20Material%2017%20-%20Appendix%20E%20-%20Baggage%20Inspection%20Record-Master.PDF - Hazardous Material 17 - Appendix F - Photographs (item 38, .PDF, 796 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40153098&FileExtension=.PDF&FileName=Hazardous%20Material%2017%20-%20Appendix%20F%20-%20Photographs-Master.PDF - FAA ATC Transcripts (item 39, .PDF, 416 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475123&FileExtension=.PDF&FileName=FAA%20ATC%20Transcripts-Master.PDF - Chemical Testing of Grommet Material (item 40, .PDF, 59 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475124&FileExtension=.PDF&FileName=Chemical%20Testing%20of%20Grommet%20Material-Master.PDF - Submission from Association of Flight Attendants (item 41, .PDF, 120 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475125&FileExtension=.PDF&FileName=Submission%20from%20Association%20of%20Flight%20Attendants-Master.PDF - Submission from Boeing (item 42, .PDF, 252 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40475126&FileExtension=.PDF&FileName=Submission%20from%20Boeing-Master.PDF From the NTSB's public API. 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