# NTSB investigations: Approach

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

Page 5 of 420 · 20,992 cases

## Cases, newest first

- [NTSB ERA25LA216](https://openairdocs.org/ntsb/ERA25LA216.md): Cessna 172F · Vero Beach, FL · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 2, 2025 · N5200F · Substantial damage
  > A total loss of engine power for reasons that could not be determined.
- [NTSB GAA25WA239](https://openairdocs.org/ntsb/GAA25WA239.md): Cessna TU206 · Vereda El Canelón, Colombia · Accident · 1 fatal · Class 3 · Foreign · May 31, 2025 · HK-1925 · Destroyed
- [NTSB CEN25LA193](https://openairdocs.org/ntsb/CEN25LA193.md): Cessna 177B · Columbus, MS · Accident · Minor injuries · Class 4 · Limited · Final report · May 31, 2025 · N177LS · Substantial damage
  > The pilot's inadequate preflight inspection and improper in-flight decision-making, which resulted in a total loss of engine power due to fuel exhaustion and a subsequent landing on rough terrain.
- [NTSB CEN25LA192](https://openairdocs.org/ntsb/CEN25LA192.md): Piper PA-32RT-300T · Tulsa, OK · Accident · Serious injuries · Class 3 · Limited · Preliminary report · May 30, 2025 · N130XR · Substantial damage
  > On May 30, 2025, about 1627 central daylight time, a Piper PA-32RT-300T airplane, N130XR, was substantially damaged when it was involved in an accident near Tulsa, Oklahoma. The pilot sustained serious injuries, and the pilot-rated passenger sustained minor…
- [NTSB CEN25LA188](https://openairdocs.org/ntsb/CEN25LA188.md): Piper PA-18 · Vega, TX · Accident · Minor injuries · Class 4 · Limited · Final report · May 26, 2025 · N7175D · Substantial damage
  > The airplane’s inadvertent encounter with a localized low boundary layer, which caused a wind shift, and a gusting tailwind during final approach, that resulted in the pilot deciding to impact a wind cone and a subsequent impact with terrain. Contributing was…
- [NTSB ERA25LA210](https://openairdocs.org/ntsb/ERA25LA210.md): Vans RV-12 · Abingdon, VA · Accident · Serious injuries · Class 4 · Limited · Final report · May 24, 2025 · N813JC · Substantial damage
  > The pilot’s inadequate preflight planning, which resulted in a total loss of engine power due to fuel exhaustion.
- [NTSB DCA25WA220](https://openairdocs.org/ntsb/DCA25WA220.md): Boeing 737 · Lima, Peru · Incident · Foreign investigation · May 23, 2025 · HP-1844CMP
- [NTSB WPR25FA161](https://openairdocs.org/ntsb/WPR25FA161.md): Cessna S550 · San Diego, CA · Accident · 6 fatal · Class 3 · Field · Preliminary report · May 22, 2025 · N666DS · Destroyed
  > On May 22, 2025, at 0347 Pacific daylight time (PDT), a Cessna Citation S550, N666DS, was destroyed when it was involved in an accident near San Diego, California. The pilot and five passengers were fatally injured. Eight people on the ground received minor…
- [NTSB CEN25FA178](https://openairdocs.org/ntsb/CEN25FA178.md): Beech 95-B55 (T42A) · Broomfield, CO · Accident · 2 fatal · Class 3 · Field · Preliminary report · May 17, 2025 · N4321Z · Destroyed
  > On May 17, 2025, about 1003 mountain daylight time, a Beechcraft 95-B55, was destroyed when it was involved in an accident near Broomfield, Colorado. The pilot and pilot-rated passenger sustained fatal injuries. The flight was being operated as a Title 14…
- [NTSB CEN25LA172](https://openairdocs.org/ntsb/CEN25LA172.md): Golden Circle Air T-Bird · Dallas Center, IA · Accident · No injuries · Class 4 · Limited · Final report · May 5, 2025 · N7192M · Substantial damage
  > The pilot’s failure to maintain adequate roll control of the light sport airplane while on final approach to the airstrip with a crosswind.
- [NTSB CEN25LA168](https://openairdocs.org/ntsb/CEN25LA168.md): Cessna 172N · Longmont, CO · Accident · No injuries · Class 3 · Limited · Final report · May 4, 2025 · N75775 · Substantial damage
  > The disconnected throttle control that resulted in a loss of engine power due to improper maintenance.
- [NTSB WPR25FA146](https://openairdocs.org/ntsb/WPR25FA146.md): Cessna 177RG · Grass Valley, CA · Accident · 1 fatal · Class 3 · Field · Final report · May 1, 2025 · N52156 · Substantial damage
  > An improperly tightened B-nut fitting at the fuel flow divider, which resulted in a fuel leak and loss of engine power due to fuel starvation, and the inadequate maintenance inspection, which failed to detect and correct the discrepancy.
- [NTSB OPS25LA034](https://openairdocs.org/ntsb/OPS25LA034.md): Embraer ERJ 170-100 LR · Washington, DC · Incident · Class 3 · Limited · Preliminary report · May 1, 2025 · N879RW · 2 aircraft · No damage
  > On May 1, 2025, about 1433 eastern daylight time (EDT), Priority Air Transport flight 23 (PAT23), (tail number forthcoming), a UH-60 Blackhawk helicopter landing at the Pentagon Heliport (JPN), and Republic Airways flight 5825 (RPA5825), an Embraer 170,…
- [NTSB DCA25WA219](https://openairdocs.org/ntsb/DCA25WA219.md): Boeing 737 · Athens, Greece · Incident · Class 5 · Foreign · Apr 29, 2025 · 4X-EHE · 2 aircraft
- [NTSB CEN25LA176](https://openairdocs.org/ntsb/CEN25LA176.md): Beech C90 · Lancaster, TX · Accident · Serious injuries · Class 4 · Limited · Final report · Apr 28, 2025 · N501MS · Substantial damage
  > The pilot’s improper fuel planning, which resulted in fuel exhaustion and a total loss of power to both engines.
- [NTSB ERA25LA189](https://openairdocs.org/ntsb/ERA25LA189.md): Champion 7GCBC · Weyers Cave, VA · Accident · No injuries · Class 3 · Limited · Final report · Apr 26, 2025 · N9117L · Substantial damage
  > A total loss of engine power on approach due to carburetor ice.
- [NTSB ERA25FA187](https://openairdocs.org/ntsb/ERA25FA187.md): Mooney M20TN · Sparta, TN · Accident · 3 fatal · Class 3 · Field · Preliminary report · Apr 26, 2025 · N242RE · Substantial damage
  > On April 26, 2025, about 1147 central daylight time, a Mooney M20TN, N242RE, was substantially damaged when it was involved in an accident near Sparta, Tennessee. The private pilot and two passengers were fatally injured. The airplane was operated as a Title…
- [NTSB ERA25LA186](https://openairdocs.org/ntsb/ERA25LA186.md): Beech 95-C55 · Lakin, WV · Accident · Serious injuries · Class 4 · Limited · Final report · Apr 23, 2025 · N591R · Substantial damage
  > The pilot’s inadequate preflight inspection, and inadequate inflight fuel management, which resulted in a total loss of engine power due to fuel starvation and subsequent forced landing.
- [NTSB WPR25LA138](https://openairdocs.org/ntsb/WPR25LA138.md): Schweizer SGS 2-33A · Hood River, OR · Accident · No injuries · Class 4 · Limited · Final report · Apr 19, 2025 · N5786S · Substantial damage
  > The glider’s encounter with atmospheric conditions where the lift was not sufficient to maintain flight.
- [NTSB WPR25LA136](https://openairdocs.org/ntsb/WPR25LA136.md): D'Apuzzo Senior Aero Sport · Phoenix, AZ · Accident · No injuries · Class 3 · Limited · Preliminary report · Apr 19, 2025 · N321WC · Substantial damage
  > On April 19, 2025, about 1106 Pacific daylight time, an experimental amateur built D'Apuzzo Senior Aero Sport, N321WC, was substantially damaged when it was involved in an accident near Phoenix, Arizona. The pilot was not injured. The airplane was operated as…
- [NTSB ERA25LA183](https://openairdocs.org/ntsb/ERA25LA183.md): Frank Lowell C Pietenpol · Taylorsville, NC · Accident · Serious injuries · Class 4 · Limited · Final report · Apr 18, 2025 · N497AR · Substantial damage
  > The pilot’s failure to maintain control of the airplane during an attempted go around in gusty tailwind conditions, which resulted in an aerodynamic stall and impact with terrain.
- [NTSB ERA25LA176](https://openairdocs.org/ntsb/ERA25LA176.md): Cessna 150 · Kingston, OH · Accident · Serious injuries · Class 4 · Limited · Final report · Apr 13, 2025 · N6653F · Substantial damage
  > The pilot’s exceedance of the airplanes’ critical angle of attack resulting in a stall at an altitude too low to recover.
- [NTSB WPR25FA127](https://openairdocs.org/ntsb/WPR25FA127.md): Azalea Saberwing · Justin, TX · Accident · 1 fatal · Class 3 · Field · Preliminary report · Apr 12, 2025 · N121DF · Destroyed
  > On April 11, 2025, about 1906 central daylight time (CDT), an experimental amateur-built Azalea Aviation LLC Saberwing, N121DF, was destroyed when it was involved in an accident near Justin, Texas. The pilot was fatally injured. The airplane was operated as a…
- [NTSB ERA25LA172](https://openairdocs.org/ntsb/ERA25LA172.md): Piper PA46R-350T · Folkston, GA · Accident · Serious injuries · Class 4 · Limited · Final report · Apr 10, 2025 · N179ST · Substantial damage
  > The pilot’s failure to maintain control of the airplane during a go-around.
- [NTSB CEN25LA147](https://openairdocs.org/ntsb/CEN25LA147.md): Cessna 150F · Zeeland, MI · Accident · No injuries · Class 4 · Limited · Final report · Apr 8, 2025 · N6561F · Substantial damage
  > The flight instructor’s failure to maintain control of the airplane during the go-around which led to the airplane exceeding its critical angle-of-attack and entering an aerodynamic stall at a low altitude. Contributing to the accident was the flight…
- [NTSB CEN25FA148](https://openairdocs.org/ntsb/CEN25FA148.md): Anusiewicz Cassutt III M · Haskell, OK · Accident · 1 fatal · Class 3 · Field · Preliminary report · Apr 8, 2025 · N5RR · Substantial damage
  > On April 8, 2025, about 1459 central daylight time, a Cassutt III M airplane, N5RR, was substantially damaged when it was involved in an accident near Haskell, Oklahoma. The pilot was fatally injured. The aircraft was operated as a Title 14 Code of Federal…
- [NTSB CEN25LA146](https://openairdocs.org/ntsb/CEN25LA146.md): Piper PA28 · Ault, CO · Accident · No injuries · Class 4 · Limited · Final report · Apr 7, 2025 · N8282V · Substantial damage
  > The flight instructor’s failure to maintain terrain clearance during an attempted go-around, which resulted in a collision with a fence post.
- [NTSB DCA25WA182](https://openairdocs.org/ntsb/DCA25WA182.md): Boeing 737 · Cairo, Egypt · Incident · Class 5 · Foreign · Apr 5, 2025 · SU-GEK · No damage
- [NTSB DCA25WA202](https://openairdocs.org/ntsb/DCA25WA202.md): Boeing 737-8 Max · Warsaw, Poland · Incident · Class 5 · Foreign · Apr 4, 2025 · LN-ENT · No damage
- [NTSB CEN25FA144](https://openairdocs.org/ntsb/CEN25FA144.md): Cessna 210L · Raceland, LA · Accident · 2 fatal · Class 3 · Field · Preliminary report · Apr 3, 2025 · N1574P · Destroyed
  > On April 2, 2025, at 2030 central daylight time, a Cessna 210L airplane, N1574P, was destroyed when it was involved in an accident near Raceland, Louisiana. The pilot and flight instructor were fatally injured. The airplane was operated as a Title 14 Code of…
- [NTSB GAA25WA133](https://openairdocs.org/ntsb/GAA25WA133.md): Piper PA32 · Rondonopolis, Brazil · Accident · 1 fatal · Class 4 · Foreign · Apr 2, 2025 · PP-PSO · Destroyed
- [NTSB ERA25FA163](https://openairdocs.org/ntsb/ERA25FA163.md): Cessna 310Q · Midvale, OH · Accident · 1 fatal · Class 3 · Field · Preliminary report · Apr 1, 2025 · N8242Q · Substantial damage
  > On April 1, 2025, about 1704 eastern daylight time, a Cessna 310Q, N8242Q, was substantially damaged when it was involved in an accident near Midvale, Ohio. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations…
- [NTSB GAA25WA135](https://openairdocs.org/ntsb/GAA25WA135.md): Cessna 150 · 9 de Julio, Argentina · Accident · No injuries · Class 5 · Foreign · Mar 29, 2025 · LV-CDK · Substantial damage
- [NTSB CEN25FA141](https://openairdocs.org/ntsb/CEN25FA141.md): Socata TBM700A · Brooklyn Park, MN · Accident · 1 fatal · Class 3 · Field · Preliminary report · Mar 29, 2025 · N721MB · Destroyed
  > On March 29, 2025, about 1221 central daylight time, a Socata TBM700A airplane, N721MB, was destroyed when it was involved in an accident near Brooklyn Park, Minnesota. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal…
- [NTSB ERA25LA156](https://openairdocs.org/ntsb/ERA25LA156.md): Bell 206 · Chamblee, GA · Accident · Serious injuries · Class 4 · Limited · Final report · Mar 21, 2025 · N5QV · Substantial damage
  > The pilot’s inadequate fuel planning, which resulted in a total loss of engine power during approach due to fuel exhaustion.
- [NTSB WPR25LA115](https://openairdocs.org/ntsb/WPR25LA115.md): Rotorsport UK Cavalon · Murrieta, CA · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 20, 2025 · N157P · Substantial damage
  > The student pilot’s failure to maintain adequate airspeed during an approach and subsequent descent into terrain. Contributing to the accident was the student pilot’s failure to perform a go-around maneuver.
- [NTSB ERA25FA151](https://openairdocs.org/ntsb/ERA25FA151.md): Cirrus Design SR22 · LaFayette, GA · Accident · 2 fatal · Class 3 · Field · Final report · Mar 20, 2025 · N969SS · Destroyed
  > The pilot’s exceedance of the airplane’s critical angle of attack while landing and the flight instructor’s inadequate remedial action, which resulted in an aerodynamic stall/spin at an altitude too low for recovery.
- [NTSB GAA25WA131](https://openairdocs.org/ntsb/GAA25WA131.md): Cozy MK IV · Gloucester, United Kingdom · Accident · No injuries · Class 5 · Foreign · Mar 18, 2025 · G-BYLZ · Substantial damage
- [NTSB WPR25LA113](https://openairdocs.org/ntsb/WPR25LA113.md): Beech E-55 · Van Nuys, CA · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 16, 2025 · N994WY · Substantial damage
  > An in-flight collision with a bird during an approach to land.
- [NTSB CEN25LA128](https://openairdocs.org/ntsb/CEN25LA128.md): Cessna 172S · Rusk, TX · Accident · No injuries · Class 4 · Limited · Final report · Mar 16, 2025 · N52243 · Substantial damage
  > The pilot's failure to maintain airplane control and adequate airspeed during the go-around, resulting in an aerodynamic stall and impact with terrain.
- [NTSB DCA25WA165](https://openairdocs.org/ntsb/DCA25WA165.md): Embraer 190 · The Granites, Australia · Occurrence · Class 5 · Foreign · Mar 8, 2025 · VH-A2V · No damage
- [NTSB GAA25WA100](https://openairdocs.org/ntsb/GAA25WA100.md): Grumman AA5 · Zell am See, Austria · Accident · No injuries · Class 5 · Foreign · Mar 4, 2025 · LX-ARA · Destroyed
- [NTSB GAA25WA121](https://openairdocs.org/ntsb/GAA25WA121.md): Piper PA46 · Aarhus, Denmark · Accident · No injuries · Class 5 · Foreign · Mar 3, 2025 · D-EGMG · Minor damage
- [NTSB OPS25LA025](https://openairdocs.org/ntsb/OPS25LA025.md): Boeing 737-823 · Goodyear, AZ · Incident · Class 4 · Limited · Investigation open · Feb 26, 2025 · N955NN · 2 aircraft · No damage
- [NTSB ERA25LA380](https://openairdocs.org/ntsb/ERA25LA380.md): Bell Helicopter UH-1D · DeLand, FL · Accident · No injuries · Class 4 · Limited · Final report · Feb 26, 2025 · N849DB · Substantial damage
  > The pilot’s loss of helicopter control during landing approach in strong wind conditions, which resulted in tail rotor contact with the ground during landing.
- [NTSB CEN25LA103](https://openairdocs.org/ntsb/CEN25LA103.md): Starduster II · Azle, TX · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Feb 24, 2025 · N78WT · Destroyed
  > On February 24, 2025, at 1430 central standard time, a Starduster II airplane, N78WT, was destroyed when it was involved in an accident near Azle, Texas. The private pilot and a passenger received minor injuries. The airplane was operated as a Title 14 Code…
- [NTSB ANC25LA019](https://openairdocs.org/ntsb/ANC25LA019.md): Piper PA-18-150 · Wasilla, AK · Accident · No injuries · Class 3 · Limited · Final report · Feb 21, 2025 · N2447J · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB WPR25FA097](https://openairdocs.org/ntsb/WPR25FA097.md): Lancair 360 · Marana, AZ · Accident · 2 fatal · Class 3 · Field · Preliminary report · Feb 19, 2025 · N3602M · 2 aircraft · Destroyed
  > On February 19, 2025, about 0828 mountain standard time, a Lancair 360 Mk II, N3602M, was destroyed, and a Cessna 172S, N463ER, sustained minor damage when they were involved in a mid-air collision near Marana Regional Airport (AVQ), Marana, Arizona. The…
- [NTSB ERA25LA129](https://openairdocs.org/ntsb/ERA25LA129.md): Eurocopter Deutschland EC135T2 · Philadelphia, PA · Accident · No injuries · Class 4 · Limited · Final report · Feb 17, 2025 · N405TJ · 2 aircraft · Substantial damage
  > The sUAS operator’s failure to see and avoid a helicopter, resulting in a midair collision between the helicopter and the sUAS.
- [NTSB DCA25WA157](https://openairdocs.org/ntsb/DCA25WA157.md): Embraer ERJ190 · Eaton, Australia · Occurrence · No injuries · Class 5 · Foreign · Feb 12, 2025 · VH-UYO · No damage

Next page: https://openairdocs.org/ntsb-phases/500/cases.md?page=6

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
  crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
  current_codes AS (
    SELECT e.case_mkey, TRY_CAST(e."tier1Number" AS INTEGER) AS code,
      row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e."isDefiningEvent", false) DESC, e.position) AS n
    FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
    WHERE e.aircrafts_position = 1 AND e."tier1Number" GLOB '[1-9][0-9]*'
      AND (e."isDefiningEvent" OR e.case_mkey IN (SELECT "mKey" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE "isPre1982"))
  ),
  phases AS (
    SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
    FROM current_codes WHERE n = 1
    UNION ALL
    SELECT o.case_mkey, 'older', o."phaseOfFlightCode", w.main
    FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o."phaseOfFlightCode"
    WHERE o.aircrafts_position = 1 AND o."occurrenceNumber" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
  ),
  case_phases AS (
    SELECT p.*, c."eventDate", c."highestInjuryLevel" = 'Fatal' AS fatal, a.aircraft_model_code
    FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = p.case_mkey
    LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
    WHERE c."eventDate" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
  )
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 500)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/500/cases?page=5

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.