# NTSB investigations: Landing

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 83 of 1,075 · 53,702 cases

## Cases, newest first

- [NTSB CEN18LA102](https://openairdocs.org/ntsb/CEN18LA102.md): Scheineman-Van Buren T 18 · Longmont, CO · Accident · Serious injuries · Limited investigation · Final report · Feb 16, 2018 · N89ER · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll and the flight instructor’s delayed remedial action, which resulted in a groundloop and nose over.
- [NTSB GAA18CA130](https://openairdocs.org/ntsb/GAA18CA130.md): Piper PA 16 · Phoenix, AZ · Accident · No injuries · Data collection · Final report · Feb 13, 2018 · N5726H · Substantial damage
  > The pilot’s failure to maintain directional control while landing in crosswind conditions.
- [NTSB GAA18CA137](https://openairdocs.org/ntsb/GAA18CA137.md): Beech C90 · Montague, CA · Accident · No injuries · Data collection · Final report · Feb 12, 2018 · N118MF · Substantial damage
  > The failure of pilot to extend the landing gear during landing.
- [NTSB WPR18LA089](https://openairdocs.org/ntsb/WPR18LA089.md): Shanks V Roger Vari EZE · Santa Monica, CA · Accident · No injuries · Limited investigation · Final report · Feb 11, 2018 · N944X · Substantial damage
  > An undetected fluid leak in the right brake line, which resulted in a reduction of braking effectiveness at the right wheel and a loss of directional control during the landing roll.
- [NTSB GAA18CA235](https://openairdocs.org/ntsb/GAA18CA235.md): Cessna 150 · Statesville, NC · Accident · No injuries · Data collection · Final report · Feb 11, 2018 · N23398 · Substantial damage
  > The pilot’s failure to maintain crosswind correction during landing and the flight instructor’s delayed remedial action. Contributing to the accident was the pilot’s and flight instructor’s decision to land with gusting tailwinds.
- [NTSB GAA18CA126](https://openairdocs.org/ntsb/GAA18CA126.md): Cessna 180 · Nenana, AK · Accident · No injuries · Data collection · Final report · Feb 11, 2018 · N2347C · Substantial damage
  > The pilot’s failure to maintain an adequate approach path to an unimproved airstrip, which resulted in a hard landing short of the airstrip.
- [NTSB GAA18CA132](https://openairdocs.org/ntsb/GAA18CA132.md): Cubcrafters CC11-160 · Carson City, NV · Accident · No injuries · Data collection · Final report · Feb 10, 2018 · N88ZQ · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll in gusting crosswind conditions.
- [NTSB GAA18CA182](https://openairdocs.org/ntsb/GAA18CA182.md): Heinlein George GH125 · Valkaria, FL · Accident · No injuries · Data collection · Final report · Feb 8, 2018 · N79GH · Substantial damage
  > The pilot’s decision to exit the paved runway into soft terrain, which resulted in a ground loop and landing gear collapse.
- [NTSB WPR18CA085](https://openairdocs.org/ntsb/WPR18CA085.md): Mooney M20J · Newport, OR · Accident · No injuries · Data collection · Final report · Feb 7, 2018 · N925JH · Substantial damage
  > The pilot's improper approach and landing flare in dark night, which resulted in a bounced landing.
- [NTSB GAA18CA121](https://openairdocs.org/ntsb/GAA18CA121.md): Piper PA28 · Metter, GA · Accident · No injuries · Data collection · Final report · Feb 5, 2018 · N8475W · Substantial damage
  > The student pilot’s failure to maintain directional control during landing.
- [NTSB GAA18CA119](https://openairdocs.org/ntsb/GAA18CA119.md): Cessna 172 · Juneau, AK · Accident · No injuries · Data collection · Final report · Feb 5, 2018 · N271BJ · Substantial damage
  > The pilot’s selection of unsuitable terrain for landing, which resulted in a nose-over.
- [NTSB GAA18CA118](https://openairdocs.org/ntsb/GAA18CA118.md): Somerton David J JA30 Superstol · Kerrville, TX · Accident · No injuries · Data collection · Final report · Feb 5, 2018 · N726AD · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll in gusting crosswind conditions.
- [NTSB CEN18LA094](https://openairdocs.org/ntsb/CEN18LA094.md): Raytheon 400A · Cleveland, OH · Accident · No injuries · Limited investigation · Final report · Feb 5, 2018 · N570TM · Substantial damage
  > The airplane's reduced braking performance due to an ice-covered runway, which resulted in a runway excursion. Contributing to the accident was the crew's selection of a runway with a tailwind.
- [NTSB GAA18CA120](https://openairdocs.org/ntsb/GAA18CA120.md): American Champion 7GCBC · Santa Paula, CA · Accident · No injuries · Data collection · Final report · Feb 2, 2018 · N519AC · Substantial damage
  > The pilot’s failure to maintain directional control during landing due to being distracted by another airplane and her delayed initiation of a go-around, during which the right wing struck a parked helicopter.
- [NTSB GAA18CA117](https://openairdocs.org/ntsb/GAA18CA117.md): Hughes Helicopters 369 · Wrightwood, CA · Accident · No injuries · Data collection · Final report · Feb 1, 2018 · N618SG · Substantial damage
  > The pilot’s high altitude, high gross weight landing with insufficient tail rotor thrust resulting in a loss of tail rotor effectiveness.
- [NTSB CEN18WA105](https://openairdocs.org/ntsb/CEN18WA105.md): Sikorsky S-92A · Shetland, United Kingdom · Incident · No injuries · Foreign investigation · Jan 29, 2018 · G-CHHF · No damage
  > On January 14, 2018, about 1413 universal time (UTC), a United Kingdom registered Sikorsky S-92A, G-CHHF, experienced a nose landing gear (NLG) anomaly during landing at Scatsta Airport, Shetland, United Kingdom. The NLG did not extend during the approach to…
- [NTSB GAA18CA112](https://openairdocs.org/ntsb/GAA18CA112.md): Cessna 172 · Silver City, NM · Accident · No injuries · Data collection · Final report · Jan 26, 2018 · N1046F · Substantial damage
  > The student pilot’s improper landing flare in gusting crosswind conditions, which resulted in a hard, bounced landing.
- [NTSB WPR18WA083](https://openairdocs.org/ntsb/WPR18WA083.md): Gulfstream GULFSTREAM200 · Abuja, Nigeria · Accident · No injuries · Foreign investigation · Jan 25, 2018 · 5N-BTF
  > On January 25, 2018, at 1818 Universal Coordinated Time (UTC), a Nigerian registered Gulfstream G-200, 5N-BTF experienced a runway excursion during the landing rollout at Nnamdi Azikiwe International Airport (DNAA), Abuja, Nigeria. The airplane departed the…
- [NTSB GAA18CA143](https://openairdocs.org/ntsb/GAA18CA143.md): Cessna 172 · McKinney, TX · Accident · No injuries · Data collection · Final report · Jan 24, 2018 · N9520Z · Substantial damage
  > The student pilot’s improper approach and landing flare, which resulted in a porpoised landing.
- [NTSB ANC18LA025](https://openairdocs.org/ntsb/ANC18LA025.md): Dehavilland Beaver DHC 2 · Kodiak, AK · Accident · No injuries · Limited investigation · Final report · Jan 24, 2018 · N1544 · Substantial damage
  > The pilot's failure to maintain directional control during landing for reasons that could not be determined based on the available evidence.
- [NTSB GAA18CA115](https://openairdocs.org/ntsb/GAA18CA115.md): Cessna 210 · Sussex, NJ · Accident · No injuries · Data collection · Final report · Jan 21, 2018 · N884KM · Destroyed
  > The pilot’s inadvertent landing gear retraction during approach.
- [NTSB CEN18LA080](https://openairdocs.org/ntsb/CEN18LA080.md): Tomlinson Tracy L Tukan · Erie, CO · Accident · Minor injuries · Limited investigation · Final report · Jan 18, 2018 · N907T · Substantial damage
  > The student pilot’s inadvertent shutting off of the fuel valve while on approach, which resulted in a loss of engine power due to fuel starvation and impact with terrain.
- [NTSB DCA18WA100](https://openairdocs.org/ntsb/DCA18WA100.md): Boeing 737 · Auckland, New Zealand · Incident · No injuries · Foreign investigation · Jan 17, 2018 · VH-YIR · Minor damage
  > The AAIB of New Zealand has notified the NTSB of an incident involving a Boeing 737 airplane that occurred on January 17, 2018. The NTSB has appointed a U.S. Accredited Representative to assist the AAIB of New Zealand's investigation under the provisions of…
- [NTSB GAA18CA109](https://openairdocs.org/ntsb/GAA18CA109.md): Beech B60 · Scottsdale, AZ · Accident · No injuries · Data collection · Final report · Jan 16, 2018 · CFESG · Substantial damage
  > The pilot’s improper brake application during landing, which resulted in a tire blowout and a loss of directional control.
- [NTSB GAA18CA103](https://openairdocs.org/ntsb/GAA18CA103.md): Harrop Blake RV 7 · Death Valley National Park, CA · Accident · Minor injuries · Data collection · Final report · Jan 14, 2018 · N4163B · Substantial damage
  > The pilot’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle of attack during the landing flare, which resulted in an aerodynamic stall.
- [NTSB ANC18LA019](https://openairdocs.org/ntsb/ANC18LA019.md): Cessna 210 · Juneau, AK · Accident · No injuries · Class 3 · Limited · Final report · Jan 14, 2018 · N3607Y · Substantial damage
  > A loss of hydraulic fluid due to a fatigue failure of the right main landing gear hydraulic actuator, which resulted in the pilot's inability to fully extend the landing gear and a main landing gear collapse during the landing roll.
- [NTSB WPR18LA065](https://openairdocs.org/ntsb/WPR18LA065.md): Just JA30 Superstol · Kapolei, HI · Accident · No injuries · Limited investigation · Final report · Jan 13, 2018 · N413Z · Substantial damage
  > The collapse and separation of the right landing gear suspension strut due to overload.
- [NTSB GAA18CA108](https://openairdocs.org/ntsb/GAA18CA108.md): Piper J3L · Astoria, OR · Accident · No injuries · Data collection · Final report · Jan 13, 2018 · N35226 · Substantial damage
  > The control stick handgrip separation from the control stick resulting in the airplane pitching forward, which resulted in hard landing.
- [NTSB DCA18WA080](https://openairdocs.org/ntsb/DCA18WA080.md): Boeing 737 · Trabzon, Türkiye · Accident · No injuries · Foreign investigation · Jan 13, 2018 · TC-CPF · Substantial damage
  > The Turkish Accident Investigation Board (KAIK) has notified the NTSB of an accident involving a Boeing 737 which occurred on January 13, 2018. The NTSB has appointed a U.S Accredited Representative to assist under the provisions of ICAO Annex 13, as the…
- [NTSB GAA18CA107](https://openairdocs.org/ntsb/GAA18CA107.md): Bell UH 1H · Van Nuys, CA · Accident · No injuries · Data collection · Final report · Jan 12, 2018 · N205KS · Substantial damage
  > The pilot’s failure to maintain clearance from a stationary helicopter during landing. Contributing to the accident was the ground crew’s failure to ensure that the helicopter would clear the stationary helicopter.
- [NTSB GAA18CA101](https://openairdocs.org/ntsb/GAA18CA101.md): Cub Crafters CC18-180 · Winnimucca, NV · Accident · No injuries · Data collection · Final report · Jan 12, 2018 · N127DT · Substantial damage
  > The pilot’s failure to maintain directional control and her use of excessive braking during landing, which resulted in a nose-over.
- [NTSB GAA18CA099](https://openairdocs.org/ntsb/GAA18CA099.md): Cubcrafters CC11 · Spanish Fork, UT · Accident · No injuries · Data collection · Final report · Jan 11, 2018 · N5923C · Substantial damage
  > The pilot’s incorrect brake application during the landing roll, resulting in a nose over.
- [NTSB WPR18WA068](https://openairdocs.org/ntsb/WPR18WA068.md): Gulfstream GULFSTREAM200 · Albay, Philippines · Accident · No injuries · Foreign investigation · Jan 10, 2018 · RP-C280 · Substantial damage
  > January 10, 2018, at 1132 local time, a Gulfstream 200, RP-C280, was substantially damaged while landing at the Legazpi City Airport, Lagazpi, Albay, Philippines. The airplane was owned by the Asian Aerospace Corporation and operated under the pertinent civil…
- [NTSB GAA18CA116](https://openairdocs.org/ntsb/GAA18CA116.md): Beech B19 · Meadville, PA · Accident · No injuries · Data collection · Final report · Jan 10, 2018 · N24002 · Substantial damage
  > The student pilot’s failure to maintain directional control during landing.
- [NTSB WPR18LA057](https://openairdocs.org/ntsb/WPR18LA057.md): Cessna T210L · Aurora, OR · Accident · No injuries · Limited investigation · Final report · Jan 2, 2018 · N2122S · Substantial damage
  > A collapse of the right main landing gear during the landing roll because the gear would not lock into place. Contributing to the accident was the pilot's failure to perform the alternate landing gear extension procedure before landing.
- [NTSB ANC18LA018](https://openairdocs.org/ntsb/ANC18LA018.md): Costruzioni Aeronautiche Tecna P2006 · Lynchburg, VA · Accident · No injuries · Class 2 · Limited · Final report · Jan 1, 2018 · N594MA · Substantial damage
  > The failure of the left main landing gear assembly due to a fatigue fracture along the inside circumferential weld on the trailing arm’s attachment flange, which resulted from the manufacturer’s inadequate welding of the trailing arm connecting the lower arm…
- [NTSB DCA18IA081](https://openairdocs.org/ntsb/DCA18IA081.md): Bombardier DHC 8 402 · Pullman, WA · Incident · No injuries · Incident investigation · Final report · Dec 30, 2017 · N412QX · No damage
  > the flight crew's misidentification of the taxiway as the landing runway due to the failure of the runway lighting that caused only the taxiway lights to be illuminated.
- [NTSB GAA18CA094](https://openairdocs.org/ntsb/GAA18CA094.md): Piper PA32 · Spearfish, SD · Accident · No injuries · Data collection · Final report · Dec 28, 2017 · N11KX · Substantial damage
  > The pilot’s inadvertent landing in snow adjacent to the snow-covered runway resulting in a collision with runway signs.
- [NTSB GAA18CA096](https://openairdocs.org/ntsb/GAA18CA096.md): Aeropro CZ Eurofox · Upper Lake, CA · Accident · No injuries · Data collection · Final report · Dec 27, 2017 · N3945A · Substantial damage
  > The pilot’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle of attack during the approach to land, which resulted in an aerodynamic stall.
- [NTSB CEN18LA062](https://openairdocs.org/ntsb/CEN18LA062.md): Cessna 525A · Michigan City, IN · Accident · Minor injuries · Class 3 · Limited · Final report · Dec 27, 2017 · N525KT · Substantial damage
  > The flight crew's improper decision to land on a snow-covered runway that had insufficient runway distance for the airplane to land with the contamination, which resulted in a runway overrun and impact with obstacles.
- [NTSB GAA18CA093](https://openairdocs.org/ntsb/GAA18CA093.md): Let L 23 Super Blanik · Clermont, FL · Accident · No injuries · Data collection · Final report · Dec 23, 2017 · N389BA · Substantial damage
  > The student pilot’s failure to maintain directional control during the landing flare.
- [NTSB ERA18LA058](https://openairdocs.org/ntsb/ERA18LA058.md): Mooney M20K · Venice, FL · Accident · No injuries · Limited investigation · Final report · Dec 22, 2017 · N5254G · Substantial damage
  > A failure of the normal landing gear extension system for reasons that could not be determined due to damage to the system and the pilot's failure to ensure that the landing gear was down and locked before touchdown. Contributing to the accident was the…
- [NTSB GAA18CA097](https://openairdocs.org/ntsb/GAA18CA097.md): Cessna 172 · Monroe, MI · Accident · No injuries · Data collection · Final report · Dec 21, 2017 · N4491R · Substantial damage
  > The student pilot’s improper yaw control during the landing flare and the flight instructor’s failure to take remedial action, which resulted in a hard landing.
- [NTSB GAA18CA092](https://openairdocs.org/ntsb/GAA18CA092.md): Piper PA28 · Mankato, MN · Accident · Minor injuries · Data collection · Final report · Dec 20, 2017 · N284MK · Substantial damage
  > The student pilot’s improper landing flare, which resulted in a hard, bounced landing and subsequent go-around during which the student exceeded the airplane’s critical angle of attack, which resulted in an aerodynamic stall.
- [NTSB CEN18LA071](https://openairdocs.org/ntsb/CEN18LA071.md): Piper PA 12 · Angleton, TX · Accident · No injuries · Limited investigation · Final report · Dec 20, 2017 · N47FP · Substantial damage
  > The passenger's inadvertent activation of the left brake during landing, which resulted in a loss of directional control and a runway excursion.
- [NTSB CEN18LA059](https://openairdocs.org/ntsb/CEN18LA059.md): American Champion 7GCAA · Longmont, CO · Accident · No injuries · Limited investigation · Final report · Dec 20, 2017 · N519MA · Substantial damage
  > The failure of the landing gear through bolt primarily due to fatigue during a hard landing, which resulted in a landing gear collapse and runway excursion. Contributing to the accident was noncompliance with the manufacturer service letter.
- [NTSB GAA18CA091](https://openairdocs.org/ntsb/GAA18CA091.md): Aviat A-1 · Phoenix, AZ · Accident · No injuries · Data collection · Final report · Dec 19, 2017 · N33HY · Substantial damage
  > The pilot’s failure to maintain directional control of the airplane during the landing.
- [NTSB GAA18CA090](https://openairdocs.org/ntsb/GAA18CA090.md): Piper PA22 · Yentna, AK · Accident · No injuries · Data collection · Final report · Dec 18, 2017 · N4805Z · Substantial damage
  > The pilot’s selection of unsuitable terrain for landing, which resulted in a loss of directional control and subsequent nose-over.
- [NTSB CEN18CA058](https://openairdocs.org/ntsb/CEN18CA058.md): Piaggio P.180 · Georgetown, TX · Accident · No injuries · Data collection · Final report · Dec 18, 2017 · N141JT · Substantial damage
  > The pilot's inadequate compensation for crosswind conditions, which resulted in a hard landing and the right main landing gear collapsing.
- [NTSB WPR18CA048](https://openairdocs.org/ntsb/WPR18CA048.md): Cessna 172P · Valley Springs, CA · Accident · Serious injuries · Data collection · Final report · Dec 14, 2017 · N54873 · Substantial damage
  > The pilot's failure to maintain clearance from trees while maneuvering for landing and his decision to land on a surface with obstructions.

Next page: https://openairdocs.org/ntsb-phases/550/cases.md?page=84

## 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 = 550)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/550/cases?page=83

---
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.
