# NTSB investigations: Takeoff

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 70 of 281 · 14,038 cases

## Cases, newest first

- [NTSB DFW08CA214](https://openairdocs.org/ntsb/DFW08CA214.md): Bellanca 14-19-2 · Keller, TX · Accident · No injuries · Data collection · Final report · Aug 24, 2008 · N7653B · Substantial damage
  > The pilot's inadequate preflight inspection of the airplane which resulted in an attempted takeoff without fuel present in the selected fuel tank.
- [NTSB ANC08LA111](https://openairdocs.org/ntsb/ANC08LA111.md): Cessna 207A · Kongiganak, AK · Accident · Minor injuries · Limited investigation · Final report · Aug 23, 2008 · N17GN · Substantial damage
  > The pilot's decision to attempt to takeoff on a short, wet runway with a heavily loaded airplane, and his failure to abort the takeoff before it became impracticable.
- [NTSB NYC08LA291](https://openairdocs.org/ntsb/NYC08LA291.md): Cessna 441 · Baltimore, MD · Accident · No injuries · Limited investigation · Final report · Aug 20, 2008 · N441VB · Substantial damage
  > The pilot's delayed decision to abort the takeoff. Contributing to the accident was the pilot's attempted takeoff with a propeller start lock inadvertently engaged.
- [NTSB LAX08CA270](https://openairdocs.org/ntsb/LAX08CA270.md): Cessna 182Q · Mesa, AZ · Accident · No injuries · Data collection · Final report · Aug 20, 2008 · N95841 · Substantial damage
  > The pilot's failure to maintain directional control during landing.
- [NTSB CHI08CA260](https://openairdocs.org/ntsb/CHI08CA260.md): Cessna A188B · Camanche, IA · Accident · No injuries · Data collection · Final report · Aug 20, 2008 · N53243 · Substantial damage
  > The pilot took off on an unsuitable airstrip which resulted in the airplane becoming prematurely airborne with inadequate airspeed after it contacted a rise in the terrain.
- [NTSB ANC08CA110](https://openairdocs.org/ntsb/ANC08CA110.md): Cessna U206G · Igiugig, AK · Accident · No injuries · Data collection · Final report · Aug 20, 2008 · N4773U · Substantial damage
  > The pilot's misjudged speed and distance during takeoff, which resulted in the float-equipped airplane colliding with a bank.
- [NTSB ANC08TA107](https://openairdocs.org/ntsb/ANC08TA107.md): Piper PA-18-150 · Slana, AK · Accident · No injuries · Final report · Aug 19, 2008 · N4151T · Substantial damage
  > The pilot's failure to maintain directional control during an aborted takeoff.
- [NTSB SEA08TA188](https://openairdocs.org/ntsb/SEA08TA188.md): Hughes 369D · Bonners Ferry, ID · Accident · No injuries · Final report · Aug 18, 2008 · N622PB · Substantial damage
  > The pilot's inadequate preflight planning for the takeoff and the helicopter loading that exceeded the lift performance capability of the helicopter.
- [NTSB SEA08CA183](https://openairdocs.org/ntsb/SEA08CA183.md): Grumman Acft Eng G-164A · Hazelton, ID · Accident · Minor injuries · Data collection · Final report · Aug 18, 2008 · N6702Q · Substantial damage
  > The pilot's inadequate compensation for the tailwind and failure to attain and maintain airspeed, which resulted in an inadvertent stall. The tailwind was a contributing factor.
- [NTSB SEA08CA189](https://openairdocs.org/ntsb/SEA08CA189.md): Aeros Venture · Maricopa, AZ · Accident · No injuries · Data collection · Final report · Aug 17, 2008 · N707TN · Substantial damage
  > The pilot's selection of unsuitable terrain for a precautionary landing and subsequent takeoff attempt, and his misjudging of the required takeoff distance. The soft terrain was a factor.
- [NTSB CHI08CA256](https://openairdocs.org/ntsb/CHI08CA256.md): Cessna 172N · Huntington, IN · Accident · Minor injuries · Data collection · Final report · Aug 16, 2008 · N733KC · Substantial damage
  > The pilot's failure to maintain directional control during the takeoff roll. Contributing to the accident was the pilot's inadvertent use of the toe brake.
- [NTSB CHI08CA254](https://openairdocs.org/ntsb/CHI08CA254.md): Bell 47G-3B · Kenyon, MN · Accident · No injuries · Data collection · Final report · Aug 14, 2008 · N47AH · Substantial damage
  > The pilot's inadequate preflight planning which resulted in the helicopter settling with power.
- [NTSB ANC08CA108](https://openairdocs.org/ntsb/ANC08CA108.md): Piper PA-18-150 · Palmer, AK · Accident · Data collection · Final report · Aug 14, 2008 · N3573Z · Substantial damage
  > The pilot's failure to maintain clearance from a tarp used as a marker at the departure end of the takeoff area.
- [NTSB DEN08CA142](https://openairdocs.org/ntsb/DEN08CA142.md): Aerotek Pitts Special S-1S · Crawford, CO · Accident · No injuries · Data collection · Final report · Aug 13, 2008 · N362JW · Substantial damage
  > the pilot's failure to maintain directional control during takeoff. Contributing to the accident were wind gusts and rough terrain.
- [NTSB NYC08CA276](https://openairdocs.org/ntsb/NYC08CA276.md): Cessna A188B · Gardner, FL · Accident · No injuries · Data collection · Final report · Aug 10, 2008 · N4494Q · Substantial damage
  > The pilot's misjudged distance/altitude during takeoff.
- [NTSB CHI08CA249](https://openairdocs.org/ntsb/CHI08CA249.md): Morane-Saulnier MS-760/B · St Paul, MN · Accident · No injuries · Data collection · Final report · Aug 9, 2008 · N69X · Substantial damage
  > Restriction of the elevator controls due to the presence of the seat belt buckled around the co-pilot control stick. An additional cause was the failure of the pilot to verify that the flight controls were unobstructed before flight. Contributing factors were…
- [NTSB ENG08IA038](https://openairdocs.org/ntsb/ENG08IA038.md): Boeing 757 · Las Vegas, NV · Incident · No injuries · Incident investigation · Final report · Aug 6, 2008 · N666DN · No damage
  > The engine experienced an uncontained release of high pressure turbine material due to fatigue cracks that occurred on four consecutive blade retainig lugs on the 2nd stage turbine hub. The cracked lugs resulted in the release of four 2nd stage turbine blades…
- [NTSB ANC08TA099](https://openairdocs.org/ntsb/ANC08TA099.md): Piper PA-18 · Nome, AK · Accident · No injuries · Final report · Aug 6, 2008 · N7055 · Substantial damage
  > The pilot's failure to maintain directional control of the airplane during the takeoff roll.
- [NTSB NYC08LA271](https://openairdocs.org/ntsb/NYC08LA271.md): Beech B35 · Lockport, NY · Accident · Serious injuries · Limited investigation · Final report · Aug 5, 2008 · N5208C · Substantial damage
  > A partial loss of engine power, as reported by the pilot, for undetermined reasons. Contributing to the accident was the pilot's inadequate preflight planning and the overweight condition of the airplane.
- [NTSB DFW08LA209](https://openairdocs.org/ntsb/DFW08LA209.md): Evektor Aerotechnik Sportstar · St Charles, MO · Accident · No injuries · Limited investigation · Final report · Aug 5, 2008 · N411EV · Substantial damage
  > The student pilot's failure to maintain control due to his task saturation as a result of his failure to set the pitch trim to the neutral position before takeoff.
- [NTSB NYC08CA269](https://openairdocs.org/ntsb/NYC08CA269.md): Cessna 172M · Jefferson, NC · Accident · Minor injuries · Data collection · Final report · Aug 3, 2008 · N73594 · Substantial damage
  > A loss of directional control during the takeoff roll for undetermined reasons. Contributing to the severity of the event was the descending embankment adjacent to the runway.
- [NTSB CHI08CA237](https://openairdocs.org/ntsb/CHI08CA237.md): Powrachute PC 2000 · Goodfield, IL · Accident · Serious injuries · Data collection · Final report · Aug 2, 2008 · N9338W · Substantial damage
  > The insufficient aircraft performance data available to the pilot and the inadequate preflight planning/preparation by the pilot. Contributing to the accident were the trees and density altitude.
- [NTSB CHI08CA233](https://openairdocs.org/ntsb/CHI08CA233.md): Ercoupe 415-C · Cedarburg, WI · Accident · Minor injuries · Data collection · Final report · Aug 2, 2008 · N93963 · Substantial damage
  > The pilot not maintaining altitude/clearance from the tree during takeoff. Contributing to the accident were the windshear and the tree.
- [NTSB CHI08CA231](https://openairdocs.org/ntsb/CHI08CA231.md): Weatherly 201B · Creston, IL · Accident · No injuries · Data collection · Final report · Aug 1, 2008 · N2936W · Substantial damage
  > The pilot's selection of the unsuitable terrain next to the runway to avoid the landing traffic. Contributing to the accident was the hill in the middle of the runway that blocked the pilot's view of the other traffic and the high vegetation near the runway.
- [NTSB MIA08LA152](https://openairdocs.org/ntsb/MIA08LA152.md): Morris George Velocity 173RG · St. Augustine, FL · Accident · 2 fatal · Limited investigation · Final report · Jul 31, 2008 · N269VE · Substantial damage
  > A loss of control in flight due to undetermined reasons.
- [NTSB DFW08CA208](https://openairdocs.org/ntsb/DFW08CA208.md): Groom Sparrow Hawk · Tulsa, OK · Accident · No injuries · Data collection · Final report · Jul 31, 2008 · N167SC · Substantial damage
  > The student pilot's failure to maintain control of the gyroplane. Contributing to the accident was the lack of recent flight instruction prior to the flight.
- [NTSB DFW08CA202](https://openairdocs.org/ntsb/DFW08CA202.md): North American P-51D · Tulsa, OK · Accident · No injuries · Data collection · Final report · Jul 29, 2008 · N551W · Substantial damage
  > The pilot's failure to maintain aircraft control during takeoff.
- [NTSB DCA08WA086](https://openairdocs.org/ntsb/DCA08WA086.md): Boeing 767 - 200 · Budapest, Hungary · Accident · Foreign investigation · Jul 29, 2008 · EI-GBA · No damage
  > On July 29, 2008, at 1607 local Budapest time, a Krasnojarsky Airlines Boeing 767-200, EI-GBA, experienced an inadvertent deployment of an emergency escape slide after takeoff from Budapest, Hungary. The flight continued to its destination of Domodedovo…
- [NTSB ANC08IA092](https://openairdocs.org/ntsb/ANC08IA092.md): Saab-Scania Saab 340B · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Jul 29, 2008 · N364PX · No damage
  > The failure of one of the stage 1 gas generator rotor blades due to high-cycle fatigue, resulting in a contained engine failure during the takeoff roll.
- [NTSB DEN08IA123](https://openairdocs.org/ntsb/DEN08IA123.md): Airbus Industrie A319-114 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Jul 24, 2008 · C-FYJP · Minor damage
  > Total failure of the right inboard tire. Contributing to this incident were the low pressure of the tire, and the high tire heat generated by the previous rejected takeoff.
- [NTSB CHI08CA208](https://openairdocs.org/ntsb/CHI08CA208.md): Ercoupe 415-G · West Jefferson, OH · Accident · Serious injuries · Data collection · Final report · Jul 23, 2008 · N94413 · Substantial damage
  > The improper preflight planning/preparation by the pilot and the loss of engine power due to fuel exhaustion during takeoff. Contributing factors were the pilot’s expired flight review and airman medical, the aircraft weight and balance exceeded by the pilot,…
- [NTSB CHI08CA206](https://openairdocs.org/ntsb/CHI08CA206.md): Piper PA-28-235 · Lowell, MI · Accident · Minor injuries · Data collection · Final report · Jul 23, 2008 · N8942W · Substantial damage
  > The inadequate preflight planning/preparation and the short field takeoff procedure not followed by the pilot. An additional cause was the delayed aborted takeoff by the pilot. A contributing factor was the trees.
- [NTSB SEA08CA166](https://openairdocs.org/ntsb/SEA08CA166.md): Cessna 180 · Lewistown, MT · Accident · No injuries · Data collection · Final report · Jul 20, 2008 · N1710C · Substantial damage
  > The pilot's inadequate compensation for the variable and gusting winds, and his failure to maintain directional control. Contributing to the accident were variable winds that were gusting to 25 knots.
- [NTSB LAX08CA234](https://openairdocs.org/ntsb/LAX08CA234.md): Cessna 172M · Leavenworth, WA · Accident · No injuries · Data collection · Final report · Jul 20, 2008 · N80849 · Substantial damage
  > The pilot's inadequate preflight planning and failure to attain a sufficient airspeed to continue the takeoff. A contributing factor was the high density altitude and short runway.
- [NTSB LAX08FA233](https://openairdocs.org/ntsb/LAX08FA233.md): Hughes 369D · Price, UT · Accident · 3 fatal · Field investigation · Final report · Jul 19, 2008 · N400BE · Destroyed
  > The pilot's inadequate preflight performance planning for the takeoff and the loading that exceeded the lift performance capability of the helicopter.
- [NTSB CHI08LA197](https://openairdocs.org/ntsb/CHI08LA197.md): Piper PA-28-161 · Sparta, WI · Accident · Serious injuries · Limited investigation · Final report · Jul 19, 2008 · N2133V · Substantial damage
  > The pilot's inadequate preflight planning and the pilot's delay in aborting the takeoff. Contributing to the accident was the airplane's overgross weight condition.
- [NTSB CHI08CA204](https://openairdocs.org/ntsb/CHI08CA204.md): Indy T-Bird II · Independence, IA · Accident · Serious injuries · Data collection · Final report · Jul 19, 2008 · N95172 · Substantial damage
  > The takeoff airspeed not attained and the aborted takeoff not performed by the pilot. An additional cause was the lack of familiarity with the airplane by the pilot.
- [NTSB CHI08CA198](https://openairdocs.org/ntsb/CHI08CA198.md): Rockwell S2R · Carthage, IL · Accident · No injuries · Data collection · Final report · Jul 18, 2008 · N8466V · Substantial damage
  > The pilot failed to maintain directional control during the takeoff roll. Contributing to the accident were the uneven runway, the runway edge, and the cornfield.
- [NTSB DFW08CA193](https://openairdocs.org/ntsb/DFW08CA193.md): Piper PA-30 · Rockport, TX · Accident · No injuries · Data collection · Final report · Jul 17, 2008 · N44HM · Substantial damage
  > The pilot's failure to complete all cockpit checklist items prior to takeoff. Contributing to the accident was the pilot's failure to properly configure the landing gear switch.
- [NTSB CHI08CA193](https://openairdocs.org/ntsb/CHI08CA193.md): Ayres S2R-G6 · Kilbourne, IL · Accident · No injuries · Data collection · Final report · Jul 15, 2008 · N3105U · Substantial damage
  > The inadequate preflight planning and preparation and the aborted takeoff not performed by the pilot. Contributing to the accident were the trees and transmission wire.
- [NTSB DFW08CA185](https://openairdocs.org/ntsb/DFW08CA185.md): Stits SA3A · St Louis, MO · Accident · Minor injuries · Data collection · Final report · Jul 14, 2008 · N134JW · Substantial damage
  > The pilot's failure to maintain control of the airplane during takeoff.
- [NTSB DFW08CA189](https://openairdocs.org/ntsb/DFW08CA189.md): Stinson 108-1 · Alliance, NE · Accident · No injuries · Data collection · Final report · Jul 12, 2008 · N97484 · Substantial damage
  > The pilot's failure to maintain directional control on takeoff. Contributing to the accident was a lack of total experience.
- [NTSB ANC08LA088](https://openairdocs.org/ntsb/ANC08LA088.md): Cessna 150 · Manley Hot Spgs, AK · Accident · No injuries · Limited investigation · Final report · Jul 12, 2008 · N22563 · Substantial damage
  > The pilot's selection of unsuitable terrain for takeoff, which resulted in a collision with a ditch during the takeoff roll. Factors contributing to the accident were low light conditions at dusk, and soft terrain.
- [NTSB NYC08IA244](https://openairdocs.org/ntsb/NYC08IA244.md): Agusta A109E · Augusta, GA · Incident · No injuries · Incident investigation · Final report · Jul 11, 2008 · N109DU · Minor damage
  > The lack of available engine power and subsequent loss of rotor rpm due to the pilot’s departing with one engine at idle. Contributing to the incident was a corroded engine control wiring harness.
- [NTSB SEA08LA164](https://openairdocs.org/ntsb/SEA08LA164.md): Evektor-Aerotechnik SportStar · Arlington, WA · Accident · No injuries · Limited investigation · Final report · Jul 8, 2008 · N918LA · Substantial damage
  > The pilot's failure to maintain directional control of the airplane during the takeoff roll in gusty conditions.
- [NTSB SEA08LA159](https://openairdocs.org/ntsb/SEA08LA159.md): Mooney M20E · Big Creek, ID · Accident · Serious injuries · Limited investigation · Final report · Jul 7, 2008 · N5652Q · Substantial damage
  > The pilot's delayed decision to abort the landing and failure to achieve the proper touchdown point. Contributing to the accident was a high density altitude.
- [NTSB DCA08RA078](https://openairdocs.org/ntsb/DCA08RA078.md): Boeing 747-200FM · Madrid, Colombia · Accident · 2 fatal · Foreign investigation · Jul 7, 2008 · N714CK · Destroyed
  > On July 7, 2008, at 0357 local time, a Boeing 747-200FM, N714CK, operated by Kalitta Air as Centurion Airlines flight 164, was destroyed during a forced landing in Madrid, Cundinamarca, Colombia, shortly after taking off from El Dorado International Airport…
- [NTSB CHI08IA182](https://openairdocs.org/ntsb/CHI08IA182.md): Mcdonnell Douglas MD-81 · St. Louis, MO · Incident · No injuries · Incident investigation · Final report · Jul 7, 2008 · N804ME · Minor damage
  > The inadvertent partial inflation of the evacuation slide within the tailcone during takeoff and subsequent binding of the elevator control cables. The partial inflation resulted from the tailcone evacuation slide cover failing to be secured to the floor…
- [NTSB DEN08LA121](https://openairdocs.org/ntsb/DEN08LA121.md): Cessna 337G · Point Lookout, MO · Accident · Minor injuries · Limited investigation · Final report · Jul 6, 2008 · N53661 · Substantial damage
  > A fuel flange seal leak and water in the fuel resulting in a loss of engine power during takeoff. Contributing to the accident was an inadequate preflight.
- [NTSB CHI08CA178](https://openairdocs.org/ntsb/CHI08CA178.md): Mooney M20K · Howell, MI · Accident · No injuries · Data collection · Final report · Jul 6, 2008 · N252EM · Substantial damage
  > The collision with a deer during the takeoff roll. Contributing to the accident was the dusk light condition.

Next page: https://openairdocs.org/ntsb-phases/300/cases.md?page=71

## 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 = 300)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/300/cases?page=70

---
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.
