# NTSB investigations: Enroute

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 42 of 718 · 35,885 cases

## Cases, newest first

- [NTSB GAA20WA121](https://openairdocs.org/ntsb/GAA20WA121.md): Beech 58 · Sao Paulo, Brazil · Accident · 1 fatal · Foreign investigation · Jul 8, 2020 · PR-OFI · Substantial damage
  > The government of Brazil has notified the NTSB of an accident involving a BEECH 58 airplane that occurred on July 08, 2020. The NTSB has appointed a U.S. Accredited Representative to assist the government of Brazil's investigation under the provisions of ICAO…
- [NTSB WPR20LA211](https://openairdocs.org/ntsb/WPR20LA211.md): Bell UH1H · Payson, AZ · Accident · 1 fatal · Class 3 · Limited · Final report · Jul 7, 2020 · N623PB · Destroyed
  > A flight control malfunction due to either a hydraulic hardover or a flight control stiffness event, which resulted in a loss of control.
- [NTSB GAA20WA122](https://openairdocs.org/ntsb/GAA20WA122.md): Robinson R22 · Rio De Janeiro, Brazil · Accident · Minor injuries · Class 4 · Foreign · Jul 6, 2020 · PR-OEA · Substantial damage
  > The government of Brazil has notified the NTSB of an accident involving a ROBINSON R22 helicopter that occurred on July 06, 2020. The NTSB has appointed a U.S. Accredited Representative to assist the government of Brazil's investigation under the provisions…
- [NTSB WPR20FA206](https://openairdocs.org/ntsb/WPR20FA206.md): Cessna TU206 · Coeur d'Alene, ID · Accident · 8 fatal · Class 3 · Field · Final report · Jul 5, 2020 · N6373U · 2 aircraft · Destroyed
  > The failure of the pilots of both airplanes to see and avoid the other airplane.
- [NTSB DCA22LA001](https://openairdocs.org/ntsb/DCA22LA001.md): Boeing 737-7H4 · Orlando, FL · Accident · Serious injuries · Class 4 · Limited · Final report · Jul 5, 2020 · N254WN · No damage
  > An encounter with moderate turbulence during descent.
- [NTSB CEN20LA263](https://openairdocs.org/ntsb/CEN20LA263.md): Piper PA32 · Eveleth, MN · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 5, 2020 · N4079R · Destroyed
  > The seizure of the airplane’s engine-driven fuel pump due to internal contamination, which led to a total loss of engine power. The source of the contamination could not be determined based on available evidence.
- [NTSB CEN20CA275](https://openairdocs.org/ntsb/CEN20CA275.md): Condor Condor · Freedom, WI · Accident · No injuries · Class 4 · Data collection · Final report · Jul 5, 2020 · N3502X · Substantial damage
  > The pilot's failure to initiate a climb in a timely manner which resulted in contact with wires.
- [NTSB CEN20WA437](https://openairdocs.org/ntsb/CEN20WA437.md): Piper PA28 · Pointe-à-Pitre, Guadeloupe · Accident · No injuries · Class 4 · Foreign · Jul 4, 2020 · N5352F · Destroyed
- [NTSB ANC20LA064](https://openairdocs.org/ntsb/ANC20LA064.md): Piper PA22 · Soldotna, AK · Accident · No injuries · Class 3 · Limited · Final report · Jul 4, 2020 · N3604A · Substantial damage
  > The delamination of the fabric material from the fuselage above the windscreen due to failed adhesive, which resulted in disrupted airflow and a subsequent hard landing.
- [NTSB WPR20LA203](https://openairdocs.org/ntsb/WPR20LA203.md): Cessna 172 · Alpine, UT · Accident · 4 fatal · Class 3 · Limited · Final report · Jul 3, 2020 · N6929H · Destroyed
  > The pilot’s exceedance of the airplane’s critical angle-of-attack while maneuvering in a canyon, which resulted in a loss of airplane control.
- [NTSB CEN20LA269](https://openairdocs.org/ntsb/CEN20LA269.md): Air Tractor AT 602 · Weldon, AR · Accident · No injuries · Class 3 · Limited · Final report · Jul 3, 2020 · N602NY · Substantial damage
  > The total loss of engine power during cruise flight for reasons that could not be determined based on the available evidence.
- [NTSB CEN20LA260](https://openairdocs.org/ntsb/CEN20LA260.md): Champion 7EC · Port O'Conner, TX · Accident · No injuries · Class 3 · Limited · Final report · Jul 3, 2020 · N9891B · Substantial damage
  > The loss of engine power due to a stuck intake valve.
- [NTSB CEN20LA286](https://openairdocs.org/ntsb/CEN20LA286.md): Robinson R44 · Welsh, LA · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 2, 2020 · N7511D · Substantial damage
  > A partial loss of engine power while in flight due to corrosion of engine components, which resulted in a loss of control and a subsequent impact with terrain.
- [NTSB GAA20WA113](https://openairdocs.org/ntsb/GAA20WA113.md): Robinson R22 · Strzegom city, Poland · Accident · 2 fatal · Foreign investigation · Jun 30, 2020 · SP-HBOG · Destroyed
  > The government of Poland has notified the NTSB of an accident involving a ROBINSON R22 helicopter that occurred on June 30, 2020. The NTSB has appointed a U.S. Accredited Representative to assist the government of Poland's investigation under the provisions…
- [NTSB WPR20LA193](https://openairdocs.org/ntsb/WPR20LA193.md): Thatcher CX4 · Upland, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 24, 2020 · N274DR · Substantial damage
  > The inflight separation of the propeller assembly due to a fatigue fracture of the crankshaft. Contributing to the accident was the pilot’s restricted visibility during landing, which resulted in an excessive approach speed, a long landing, and subsequent…
- [NTSB CEN20WA246](https://openairdocs.org/ntsb/CEN20WA246.md): Bell 407 · Long Marston, United Kingdom · Accident · No injuries · Foreign investigation · Jun 24, 2020 · N120HH · Destroyed
  > The government of the United Kingdom has notified the NTSB of an accident involving a Bell 407 helicopter that occurred on June 24, 2020. The NTSB has appointed a U.S. Accredited Representative to assist the government of the United Kingdom's investigation…
- [NTSB GAA20WA114](https://openairdocs.org/ntsb/GAA20WA114.md): Cessna TU206 · Balleza, Chihuahua, Mexico · Accident · 5 fatal · Foreign investigation · Jun 23, 2020 · XB-PWE · Destroyed
  > The government of Mexico has notified the NTSB of an accident involving a CESSNA TU206 airplane that occurred on June 23, 2020. The NTSB has appointed a U.S. Accredited Representative to assist the government of Mexico's investigation under the provisions of…
- [NTSB GAA20WA112](https://openairdocs.org/ntsb/GAA20WA112.md): Piper PA25 · Vereda Brisas de Guaiquitia, Colombia · Accident · 1 fatal · Foreign investigation · Jun 22, 2020 · HK-1042 · Destroyed
- [NTSB ERA20CA226](https://openairdocs.org/ntsb/ERA20CA226.md): Cessna 150 · Shelby, NC · Accident · No injuries · Class 4 · Data collection · Final report · Jun 22, 2020 · N1718Q · Substantial damage
  > The pilot's inadequate preflight and inflight fuel planning, which resulted in fuel exhaustion.
- [NTSB GAA20WA116](https://openairdocs.org/ntsb/GAA20WA116.md): Cessna FA150 · Doub, France · Accident · No injuries · Foreign investigation · Jun 20, 2020 · F-BXNO · Substantial damage
  > The government of France has notified the NTSB of an accident involving a CESSNA FA150 airplane that occurred on June 20, 2020. The NTSB has appointed a U.S. Accredited Representative to assist the government of France's investigation under the provisions of…
- [NTSB ERA20CA222](https://openairdocs.org/ntsb/ERA20CA222.md): Beech 77 · Elizabethton, TN · Accident · No injuries · Class 4 · Data collection · Final report · Jun 20, 2020 · N3815Z · Substantial damage
  > The student pilot's decision to continue from visual flight into instrument meteorological conditions, which resulted in a collision with trees and mountainous terrain.
- [NTSB CEN20CA236](https://openairdocs.org/ntsb/CEN20CA236.md): Bellanca 1730A · Martinton, IL · Accident · No injuries · Class 4 · Data collection · Final report · Jun 19, 2020 · N244HW · Substantial damage
  > The pilot's improper decision to conduct an off-field precautionary landing.
- [NTSB CEN20WA237](https://openairdocs.org/ntsb/CEN20WA237.md): Piper PA34 · Reinsfeld, Germany · Accident · 1 fatal · Foreign investigation · Jun 17, 2020 · D-GEMZ · Destroyed
  > The government of Germany has notified the NTSB of an accident involving a Piper PA-34 220T airplane, German registration D-GEMZ, that occurred on June 17, 2020. The NTSB has appointed a U.S. Accredited Representative to assist the government of Germany's…
- [NTSB CEN20LA228](https://openairdocs.org/ntsb/CEN20LA228.md): Beech 24 · Livingston, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 13, 2020 · N444JR · Substantial damage
  > The total loss of engine power due to the failure of the No. 3 cylinder for reasons that could not be determined based on available evidence.
- [NTSB ERA20LA212](https://openairdocs.org/ntsb/ERA20LA212.md): Piper PA32RT · Selma, AL · Accident · 2 fatal · Class 3 · Limited · Final report · Jun 10, 2020 · N543GS · Destroyed
  > The mechanic’s failure to clean the oil suction screen during the most recent maintenance, which resulted in oil starvation and subsequent total loss of engine power.
- [NTSB ERA20LA206](https://openairdocs.org/ntsb/ERA20LA206.md): Piper PA 31T · Eatonton, GA · Accident · 5 fatal · Class 3 · Limited · Final report · Jun 5, 2020 · N135VE · Destroyed
  > The pilot’s failure to maintain control of the airplane while maneuvering in instrument meteorological conditions, which placed the airplane in an unusual attitude from which the pilot could not recover. Contributing to the accident was the convective and…
- [NTSB CEN20LA211](https://openairdocs.org/ntsb/CEN20LA211.md): Beech 23 · Cleburne, TX · Accident · No injuries · Class 3 · Limited · Final report · Jun 4, 2020 · N7941L · Substantial damage
  > The total loss of engine power due to metal fatigue failure of the No. 1 cylinder wall.
- [NTSB WPR20CA199](https://openairdocs.org/ntsb/WPR20CA199.md): Beech D 45 · Ione, CA · Accident · No injuries · Class 4 · Data collection · Final report · Jun 3, 2020 · N341MR · Substantial damage
  > The pilot's improper fuel planning, which resulted in a total loss of engine power due to fuel exhaustion and impact with terrain.
- [NTSB ERA20CA201](https://openairdocs.org/ntsb/ERA20CA201.md): Jabiru J250-SP · Gulf Of Mexico · Accident · No injuries · Class 4 · Data collection · Final report · Jun 1, 2020 · N619J · Substantial damage
  > A total loss of engine power due to a fuel leak that could not be identified since the wreckage was not recovered.
- [NTSB CEN20CA249](https://openairdocs.org/ntsb/CEN20CA249.md): Mooney M20C · Lahoma, OK · Accident · No injuries · Class 4 · Data collection · Final report · Jun 1, 2020 · N6728U · Substantial damage
  > The loss of engine power due to fuel exhaustion and the pilot’s improper fuel planning before the flight.
- [NTSB WPR20LA155](https://openairdocs.org/ntsb/WPR20LA155.md): CSP Leasing Cavalon · Roseburg, OR · Accident · 1 fatal · Class 3 · Limited · Final report · May 28, 2020 · N477AG · Destroyed
  > A substantially unweighted rotor system for reasons that could not be determined, which resulted in contact between the main rotor blade and the gyrocopter’s keel tube and a loss of control and impact with terrain.
- [NTSB CEN20LA197](https://openairdocs.org/ntsb/CEN20LA197.md): Beech 35-A33 · Cambridge, OH · Accident · 1 fatal · Class 3 · Limited · Final report · May 27, 2020 · N123JB · Substantial damage
  > A fuel injection system leak at or near the No. 3 cylinder that resulted in a partial loss of engine power during cruise flight.
- [NTSB ERA20LA194](https://openairdocs.org/ntsb/ERA20LA194.md): Bellanca 8KCAB · Rainbow City, AL · Accident · No injuries · Class 3 · Limited · Final report · May 22, 2020 · N68555 · Substantial damage
  > The partial loss of engine power for reasons that could not be determined based on available evidence.
- [NTSB CEN20LA189](https://openairdocs.org/ntsb/CEN20LA189.md): Piper PA28 · Steele, MO · Accident · No injuries · Class 3 · Limited · Final report · May 22, 2020 · N7355W · Substantial damage
  > The loss of oil pressure for a reason that could not be determined leading to failure of the engine connecting rod.
- [NTSB CEN20CA181](https://openairdocs.org/ntsb/CEN20CA181.md): Cessna 172 · Colchester, IL · Accident · Serious injuries · Class 4 · Data collection · Final report · May 15, 2020 · N92036 · Substantial damage
  > The pilot's inadequate preflight of the fuel quantity which resulted in a loss of engine power due to fuel starvation during cruise flight.
- [NTSB ANC20LA046](https://openairdocs.org/ntsb/ANC20LA046.md): Cessna A185 · Nuiqsut, AK · Accident · 1 fatal · Class 3 · Limited · Final report · May 15, 2020 · N5454E · Substantial damage
  > The pilot’s controlled flight into flat snow-covered terrain in weather conditions that were conducive to flat light conditions.
- [NTSB ERA20LA177](https://openairdocs.org/ntsb/ERA20LA177.md): Piper PA34 · Pembroke Pines, FL · Accident · 1 fatal · Class 3 · Limited · Final report · May 12, 2020 · N887SP · Destroyed
  > A total loss of power in the right engine for reasons that could not be determined based on available information. Contributing to the accident was the flight instructor’s decision to turn 180° before securing the right engine, which resulted in a loss of…
- [NTSB CEN20LA173](https://openairdocs.org/ntsb/CEN20LA173.md): Titan Titan Tornado S · Haskell, OK · Accident · Serious injuries · Class 3 · Limited · Final report · May 9, 2020 · N318WH · Substantial damage
  > The student pilot/builder’s addition of winglets to the stabilator, which resulted in flutter and overstress failure of the stabilator control horn.
- [NTSB WPR20LA135](https://openairdocs.org/ntsb/WPR20LA135.md): Piper PA-23-250 · Hemet, CA · Accident · 1 fatal · Class 3 · Limited · Final report · Apr 30, 2020 · N6521Y · Substantial damage
  > Maintenance personnel’s failure to properly inspect and replace damaged aileron control cables, which resulted in fatigue separation of the aileron control cable and loss of control of the aircraft.
- [NTSB CEN20LA170](https://openairdocs.org/ntsb/CEN20LA170.md): Ercoupe 415 · Hallettsville, TX · Accident · No injuries · Class 3 · Limited · Final report · Apr 30, 2020 · N2275H · Substantial damage
  > The partial loss of engine power due to contaminated fuel and carburetor ice.
- [NTSB WPR20LA133](https://openairdocs.org/ntsb/WPR20LA133.md): Cessna 177 · Lodi, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 29, 2020 · N3386T · Substantial damage
  > The fatigue failure of the no. 4 cylinder connecting rod, which resulted in a total loss of engine power.
- [NTSB CEN20LA162](https://openairdocs.org/ntsb/CEN20LA162.md): Cessna T210 · New Braunfels, TX · Accident · Minor injuries · Class 2 · Limited · Final report · Apr 28, 2020 · N210HH · Substantial damage
  > The pilot's inadequate preflight inspection and fuel planning, which resulted in the loss of engine power due to fuel exhaustion.
- [NTSB WPR20LA130](https://openairdocs.org/ntsb/WPR20LA130.md): Bell UH 1H · Mesa, AZ · Accident · 1 fatal · Class 3 · Limited · Final report · Apr 24, 2020 · N3276T · Substantial damage
  > An in-flight separation of the tail rotor gearbox from the airframe due to fatigue failure of the gearbox attachment studs, resulting in a loss of directional control and subsequent ground impact. Contributing to the accident were 1) the improper application…
- [NTSB ERA20LA161](https://openairdocs.org/ntsb/ERA20LA161.md): Keuthan Buccaneer II · Coden, AL · Accident · No injuries · Class 3 · Limited · Final report · Apr 24, 2020 · N43310 · Substantial damage
  > A total loss of engine power due to carburetor icing. Contributing to the accident was the lack of a carburetor heat system installed on the engine.
- [NTSB CEN20LA160](https://openairdocs.org/ntsb/CEN20LA160.md): Aerostar 601 · Craig, CO · Accident · 1 fatal · Class 3 · Limited · Final report · Apr 24, 2020 · N601X · Destroyed
  > The student pilot’s flight into terrain for undetermined reasons.
- [NTSB CEN20LA159](https://openairdocs.org/ntsb/CEN20LA159.md): Pilatus PC12 · Mesquite, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 23, 2020 · N477SS · Substantial damage
  > The loss of engine power due to a mis-rigged beta control cable (propeller reversing cable), which resulted in a loss of thrust inflight.
- [NTSB CEN20LA148](https://openairdocs.org/ntsb/CEN20LA148.md): Beech 36 · Cincinnati, OH · Accident · No injuries · Class 3 · Limited · Final report · Apr 16, 2020 · N66FN · Substantial damage
  > A loose fuel inlet fitting on the fuel pump due to improper maintenance, which resulted in a total loss of engine power.
- [NTSB DCA20WA110](https://openairdocs.org/ntsb/DCA20WA110.md): Boeing 737 · Matsuyama, Japan · Accident · Serious injuries · Foreign investigation · Apr 12, 2020 · JA64AN · No damage
  > The JTSB of Japan has notified the NTSB of an accident involving a Boeing 737 airplane that occurred on April 12, 2020. The NTSB has appointed a U.S. Accredited Representative to assist the JTSB's investigation under the provisions of ICAO Annex 13.All…
- [NTSB WPR20LA121](https://openairdocs.org/ntsb/WPR20LA121.md): Piper PA-32RT-300T · Angostura, NM · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 10, 2020 · N2112A · Substantial damage
  > The pilots precautionary off airport landing due to an undetermined engine issue.
- [NTSB CEN20LA145](https://openairdocs.org/ntsb/CEN20LA145.md): Beech 35 · Sidney, IA · Accident · No injuries · Class 3 · Limited · Final report · Apr 10, 2020 · N1258Z · Substantial damage
  > A loss of engine power for reasons that could not be determined.

Next page: https://openairdocs.org/ntsb-phases/400/cases.md?page=43

## 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 = 400)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/400/cases?page=42

---
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.