# NTSB investigations, 2006: Maneuvering

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 1 of 5 · 203 cases

## Latest cases

- [NTSB LAX07LA067](https://openairdocs.org/ntsb/LAX07LA067.md): Cessna 150J · San Diego, CA · Accident · 1 fatal · Limited investigation · Final report · Dec 31, 2006 · N50814 · Substantial damage
  > The pilot's improper use of the throttle and failure to maintain an adequate airspeed that resulted in a stall/spin.
- [NTSB SEA07LA040](https://openairdocs.org/ntsb/SEA07LA040.md): Tessier Avid Flyer · Hillsboro, OR · Accident · 1 fatal · Limited investigation · Final report · Dec 30, 2006 · N93TT · Substantial damage
  > The loss of engine power during maneuvering flight due to carburetor icing, and inadvertent flight into instrument meteorological conditions. Factors were the ambient weather conditions conducive to carburetor icing and fog.
- [NTSB DFW07CA050](https://openairdocs.org/ntsb/DFW07CA050.md): Hughes 269C · Mineral Wells, TX · Accident · No injuries · Data collection · Final report · Dec 30, 2006 · N9655F · Substantial damage
  > The loss of control as result of loss of tail rotor effectiveness.
- [NTSB CHI07FA048](https://openairdocs.org/ntsb/CHI07FA048.md): Mooney M-20F · Mt. Gilead, OH · Accident · 2 fatal · Field investigation · Final report · Dec 27, 2006 · N9596M · Substantial damage
  > Both the pilot-in-command/aircraft owner and the flight instructor failed to recover from the stall and the flight instructor's inadequate supervision of the flight. Contributing to the accident was the failure to maintain stall speed which resulted in the…
- [NTSB LAX07CA063](https://openairdocs.org/ntsb/LAX07CA063.md): Belcher Helicycle · Boulder City, NV · Accident · No injuries · Data collection · Final report · Dec 23, 2006 · N6912B · Substantial damage
  > a loss of engine power due to a fractured fuel line.
- [NTSB LAX07FA060](https://openairdocs.org/ntsb/LAX07FA060.md): Piper PA-28-161 · Big Pine, CA · Accident · 2 fatal · Field investigation · Final report · Dec 21, 2006 · N9141Y · Substantial damage
  > The inadequate in-flight/planning decision of both pilots to fly up a box canyon at low altitude, and their failure to maintain clearance from the terrain.
- [NTSB ATL07LA025](https://openairdocs.org/ntsb/ATL07LA025.md): Fagan Rans S-6S · Taylorsville, NC · Accident · 2 fatal · Limited investigation · Final report · Dec 10, 2006 · N949S · Destroyed
  > The pilots failure to maintain airspeed while maneuvering resulting in an inadvertent stall, uncontrolled decent, collision with the ground, and a post crash fire.
- [NTSB LAX07LA054](https://openairdocs.org/ntsb/LAX07LA054.md): John Lauer Harmon Rocket II · Bakersfield, CA · Accident · 2 fatal · Limited investigation · Final report · Dec 9, 2006 · N604JL · Destroyed
  > The pilot's failure to maintain terrain clearance during an aerobatic maneuver.
- [NTSB LAX07CA053](https://openairdocs.org/ntsb/LAX07CA053.md): North American AT-6C · Mojave, CA · Accident · No injuries · Data collection · Final report · Dec 7, 2006 · N9525C · Substantial damage
  > the pilot's failure to maintain adequate clearance from a sign while performing a low altitude maneuver.
- [NTSB SEA07LA025](https://openairdocs.org/ntsb/SEA07LA025.md): Holloway RV6A · North Bend, OR · Accident · 2 fatal · Limited investigation · Final report · Dec 3, 2006 · N914C · Destroyed
  > The pilot's failure to maintain clearance from the water while performing low altitude maneuvering flight resulting in an in flight collision with the water.
- [NTSB CHI07FA032](https://openairdocs.org/ntsb/CHI07FA032.md): Cessna 172 · Crookston, MN · Accident · 2 fatal · Field investigation · Final report · Dec 2, 2006 · N9850G · Destroyed
  > The pilot's inadvertent flight into instrument meteorological conditions which led to his spatial disorientation and subsequent loss of control. Factors were the snow, the low ceiling, and the pilot's lack of instrument flight experience.
- [NTSB LAX07TA051](https://openairdocs.org/ntsb/LAX07TA051.md): Learjet 36 · San Diego, CA · Accident · No injuries · Final report · Dec 1, 2006 · N26FN · Substantial damage
  > The pilot's failure to maintain aircraft control while maneuvering, which resulted in exceeding the design stress limits of the aircraft. Contributing to the accident was the sunglare.
- [NTSB LAX07LA047](https://openairdocs.org/ntsb/LAX07LA047.md): Interavia E-3 · San Pedro, CA · Accident · 1 fatal · Limited investigation · Final report · Nov 25, 2006 · N4426X · Substantial damage
  > Loss of control for undetermined reasons.
- [NTSB LAX07LA045](https://openairdocs.org/ntsb/LAX07LA045.md): Nanchang CJ-6A · Queen Creek, AZ · Accident · No injuries · Limited investigation · Final report · Nov 23, 2006 · N8181C · Substantial damage
  > The total loss of engine power resulting from the failure of the engine's air compressor due to a seized piston, which resulted in the stoppage of the oil pump, fuel pump, and tachometer generator, in addition to the compressor. The underlying reason for the…
- [NTSB DFW07LA026](https://openairdocs.org/ntsb/DFW07LA026.md): Keesler Pulsar · Alvarado, TX · Accident · 2 fatal · Limited investigation · Final report · Nov 23, 2006 · N115SE · Destroyed
  > The pilot's improper handling of the airplane while manuevering at a low altitude, which resulted in an inadvertant stall.
- [NTSB SEA07LA022](https://openairdocs.org/ntsb/SEA07LA022.md): McDonnell Douglas 369E · Lyons, OR · Accident · No injuries · Limited investigation · Final report · Nov 22, 2006 · N1611W · Substantial damage
  > A severing of the helicopter's cyclic and collective rods by one of the load lifting slings following the failure of the other sling. A contributing factor was the hard landing due to the fact that an autorotation was not possible.
- [NTSB SEA07LA021](https://openairdocs.org/ntsb/SEA07LA021.md): Hughes 369E · Jensen, UT · Accident · 1 fatal · Limited investigation · Final report · Nov 21, 2006 · N500FU · Substantial damage
  > The pilot's failure to maintain clearance with the transmission wires due to an inadquate visual lookout while maneuvering during a search and rescue flight.
- [NTSB MIA07CA021](https://openairdocs.org/ntsb/MIA07CA021.md): Robinson R22 · Lakeland, FL · Accident · Minor injuries · Data collection · Final report · Nov 21, 2006 · N2302A · Substantial damage
  > The flight instructor's failure to maintain control of the helicopter during takeoff resulting in a roll over.
- [NTSB NYC07LA030](https://openairdocs.org/ntsb/NYC07LA030.md): Stump Rotorway Exec 90 · Manchester, NH · Accident · No injuries · Limited investigation · Final report · Nov 18, 2006 · N169JS · Substantial damage
  > An improperly installed oil line, which resulted in oil line fatigue failure and a subsequent loss of oil to the engine. A contributing factor was the sloping terrain at the forced landing site.
- [NTSB NYC07FA029](https://openairdocs.org/ntsb/NYC07FA029.md): Robinson R44 II · Baltimore, MD · Accident · Serious injuries · Field investigation · Final report · Nov 15, 2006 · N74548 · Substantial damage
  > The pilot's failure to maintain control while landing to a trailer, which resulted in a collision with terrain. A factor in the accident was the narrow trailer.
- [NTSB NYC07FA025](https://openairdocs.org/ntsb/NYC07FA025.md): Czech Aircraft Works CH 601 XL RTF · Basye, VA · Accident · 1 fatal · Field investigation · Final report · Nov 11, 2006 · N601VA · Substantial damage
  > The pilot's inadequate preflight inspection, which resulted in a total loss of engine power due to fuel exhaustion.
- [NTSB DEN07LA020](https://openairdocs.org/ntsb/DEN07LA020.md): Air Tractor AT-502A · Deming, NM · Accident · 1 fatal · Limited investigation · Final report · Nov 6, 2006 · N1541T · Destroyed
  > The pilot's failure to maintain aircraft control while maneuvering resulting in an inadvertent stall and impact with terrain. A contributing factor was the low airspeed.
- [NTSB NYC07LA022](https://openairdocs.org/ntsb/NYC07LA022.md): Monard RAF 2000 GTX · Ridgely, MD · Accident · 1 fatal · Limited investigation · Final report · Nov 5, 2006 · N107TM · Substantial damage
  > The pilot's failure to maintain rotor rpm while maneuvering, which resulted in a loss of rotor blade rigidity.
- [NTSB LAX07TA029](https://openairdocs.org/ntsb/LAX07TA029.md): Eurocopter France AS350B3 · Apple Valley, CA · Accident · No injuries · Final report · Nov 5, 2006 · N109HP · Substantial damage
  > the pilot's improper use of the collective control during a practice hover autorotation, which resulted in a hard landing. A factor in the accident was the certificated flight instructor's inadequate supervision of the maneuver.
- [NTSB LAX07LA025](https://openairdocs.org/ntsb/LAX07LA025.md): Olson Vans RV-6 · Rio Verde, AZ · Accident · 2 fatal · Limited investigation · Final report · Nov 2, 2006 · N606RV · Substantial damage
  > The pilot's failure to maintain clearance from power lines while intentionally flying at a low altitude.
- [NTSB LAX07LA027](https://openairdocs.org/ntsb/LAX07LA027.md): Air Creations Tanarg 912 · Bisbee, AZ · Accident · 2 fatal · Limited investigation · Final report · Nov 1, 2006 · UNREG · Destroyed
  > The pilot's failure to maintain clearance from the mountainous terrain.
- [NTSB ATL07FA013](https://openairdocs.org/ntsb/ATL07FA013.md): Cirrus Design SR22 · Statesville, NC · Accident · 2 fatal · Field investigation · Final report · Oct 27, 2006 · N969ES · Substantial damage
  > The pilot's failure to maintain airspeed while maneuvering with a low ceiling in instrument flight conditions, resulting in an inadvertent stall, and collision with trees and the ground. Factors in the accident were the pilot's failure to follow the published…
- [NTSB DFW07FA008](https://openairdocs.org/ntsb/DFW07FA008.md): North American T-28C · Georgetown, LA · Accident · 1 fatal · Field investigation · Final report · Oct 22, 2006 · N470 · Destroyed
  > The pilot's failure to maintain control of the airplane which led to an aerodynamic stall. A contributing factor was the dark night.
- [NTSB LAX07FA012](https://openairdocs.org/ntsb/LAX07FA012.md): Piper PA-42 · Prescott, AZ · Accident · 5 fatal · Field investigation · Final report · Oct 18, 2006 · N121CS · Destroyed
  > The failure of the pilot following a jet aircraft to maintain adequate separation from the high velocity jet core exhaust. The separation of the T-tail upper section vertical stabilizer of the following aircraft due to contact with the high velocity jet core…
- [NTSB DFW07LA006](https://openairdocs.org/ntsb/DFW07LA006.md): Windward OWL · Starkville, MS · Accident · Minor injuries · Limited investigation · Final report · Oct 18, 2006 · N401MS · Substantial damage
  > The structural failure of the airframe due to the inadvertent excessive airspeed during maneuvering.
- [NTSB NYC07LA008](https://openairdocs.org/ntsb/NYC07LA008.md): Flynn William Pazmany PL-4 · Fredricksburg, VA · Accident · 1 fatal · Limited investigation · Final report · Oct 15, 2006 · N640F · Substantial damage
  > The pilot's intentional low altitude maneuvering, which resulted in an inadvertent collision with terrain.
- [NTSB DEN07CA009](https://openairdocs.org/ntsb/DEN07CA009.md): Robinson R22 Beta · Hope, NM · Accident · No injuries · Data collection · Final report · Oct 15, 2006 · N75262 · Substantial damage
  > the pilot's failure to maintain aircraft control. Contributing factors in this accident included the sudden wind shift and high density altitude, resulting in the helicopter settling with power, and the high vegetation.
- [NTSB NYC07FA007](https://openairdocs.org/ntsb/NYC07FA007.md): Extra Flugzeugbau Gmbh 300 · Culpeper, VA · Accident · 1 fatal · Field investigation · Final report · Oct 14, 2006 · N168EX · Destroyed
  > The pilot’s disorientation while performing an aerobatic maneuver, which resulted in the airplane’s inadvertent impact with the ground. Contributing to the accident was the pilot’s overuse of prescription medication.
- [NTSB MIA07CA004](https://openairdocs.org/ntsb/MIA07CA004.md): Hughes OH-6A · Key Largo, FL · Accident · No injuries · Data collection · Final report · Oct 11, 2006 · N810SB · Substantial damage
  > The pilot's inadvertent encounter with a loss of tail rotor effectiveness during hover in a crosswind wind.
- [NTSB DCA07MA003](https://openairdocs.org/ntsb/DCA07MA003.md): Cirrus Design SR-20 · Manhattan, NYC, NY · Accident · 2 fatal · Class 1 · Major · Final report · Oct 11, 2006 · N929CD · Destroyed
  > The pilots' inadequate planning, judgment, and airmanship in the performance of a 180º turn maneuver inside of a limited turning space.
- [NTSB NYC07FA003](https://openairdocs.org/ntsb/NYC07FA003.md): Mooney M20F · Brownsville, PA · Accident · 2 fatal · Field investigation · Final report · Oct 9, 2006 · N3447N · Substantial damage
  > A loss of aircraft control, for unknown reasons, while maneuvering.
- [NTSB DEN07FA003](https://openairdocs.org/ntsb/DEN07FA003.md): Extra Flugzeugbau EA 300/L · Tucumcari, NM · Accident · 1 fatal · Field investigation · Final report · Oct 4, 2006 · N300BB · Substantial damage
  > The pilot's failure to maintain aircraft control during aerobatic flight, resulting in an inadvertent accelerated stall. Contributing factors include the low altitude for recovery from the loop and the high density altitude.
- [NTSB ATL07LA001](https://openairdocs.org/ntsb/ATL07LA001.md): Grumman G-164 · Somerville, TN · Accident · Minor injuries · Limited investigation · Final report · Oct 4, 2006 · N493Y · Destroyed
  > The total loss of engine power for undetermined reasons.
- [NTSB LAX07TA001](https://openairdocs.org/ntsb/LAX07TA001.md): Erickson S64E · Ojai, CA · Accident · Minor injuries · Final report · Oct 1, 2006 · N189AC · Substantial damage
  > The pilot-in-command's improper remedial action, which resulted in a loss of helicopter control. Contributing factors were the retardant tank and snorkel designs.
- [NTSB ATL06LA133](https://openairdocs.org/ntsb/ATL06LA133.md): Robinson R44 · Beaufort, NC · Accident · No injuries · Limited investigation · Final report · Sep 30, 2006 · N140JM · Substantial damage
  > The loss of engine power for undetermined reasons.
- [NTSB CHI06LA273](https://openairdocs.org/ntsb/CHI06LA273.md): Daub Pawnee Chief · McCook, NE · Accident · Minor injuries · Limited investigation · Final report · Sep 28, 2006 · N565CH · Destroyed
  > The failure of a welded joint at a cyclic control cable bracket located on the main rotor mast which made control of the helicopter impossible for the pilot.
- [NTSB LAX06FA304](https://openairdocs.org/ntsb/LAX06FA304.md): Cessna 182K · Sedona, AZ · Accident · 2 fatal · Field investigation · Final report · Sep 24, 2006 · N2700Q · Destroyed
  > The pilot's failure to maintain clearance from trees and terrain while maneuvering in mountainous/hilly terrain in a high density altitude environment.
- [NTSB DFW06CA213](https://openairdocs.org/ntsb/DFW06CA213.md): Robinson R22 · Skiatook, OK · Accident · No injuries · Data collection · Final report · Sep 24, 2006 · N468SH · Substantial damage
  > The pilot's failure to maintain control of the helicopter following an encounter with dynamic rollover.
- [NTSB ANC06FA136](https://openairdocs.org/ntsb/ANC06FA136.md): de Havilland DHC-2 · Kodiak, AK · Accident · 1 fatal · Field investigation · Final report · Sep 21, 2006 · N5154G · Substantial damage
  > The pilot's failure to maintain adequate airspeed while maneuvering to reverse direction, which resulted in an inadvertent stall and an uncontrolled descent. Factors associated with the accident were the inadvertent stall and wind gusts.
- [NTSB NYC06LA227](https://openairdocs.org/ntsb/NYC06LA227.md): Air Trikes Tourist · Middlebury, VT · Accident · 2 fatal · Limited investigation · Final report · Sep 20, 2006 · UNREG · Destroyed
  > A loss of control for undetermined reasons.
- [NTSB ANC06CA133](https://openairdocs.org/ntsb/ANC06CA133.md): Piper PA-18 · Koliganek, AK · Accident · No injuries · Data collection · Final report · Sep 18, 2006 · N82905 · Substantial damage
  > The pilot's failure to maintain adequate altitude/clearance from rising terrain while maneuvering at a low altitude, which resulted in an in-flight collision with terrain. Factors associated with the accident were a downdraft, the pilot's intentional low…
- [NTSB DEN06GA128](https://openairdocs.org/ntsb/DEN06GA128.md): Piper PA-23-250 · Fort Meade, FL · Accident · 2 fatal · Final report · Sep 14, 2006 · N5941Y · Destroyed
  > A loss of power in the right engine while manuevering for reasons undetermined, and failure to maintain aircraft control which resulted in an inadvertent stall. Contributing factors were the airspeed below Vmc, and an altitude too low to afford a safe…
- [NTSB LAX06LA292](https://openairdocs.org/ntsb/LAX06LA292.md): Burkhart Grob G-103A Twin II Acro · Minden, NV · Accident · 1 fatal · Limited investigation · Final report · Sep 12, 2006 · N790G · Substantial damage
  > The inadequate pre-takeoff checks by the flightcrew that failed to detect that the spoilers were deployed during the takeoff and initial climb. Also causal was the inadequate supervision of the flight by the flight instructor.
- [NTSB LAX06FA289](https://openairdocs.org/ntsb/LAX06FA289.md): Piper PA-23-160 · Santa Maria, CA · Accident · 1 fatal · Field investigation · Final report · Sep 8, 2006 · N3082P · Destroyed
  > The non-instrument rated pilot's decision to continue flight into instrument meteorological conditions resulting in spatial disorientation and a loss of control.
- [NTSB LAX06GA287](https://openairdocs.org/ntsb/LAX06GA287.md): North American OV-10A · Porterville, CA · Accident · 2 fatal · Final report · Sep 6, 2006 · N419DF · Destroyed
  > the pilot's failure to maintain adequate terrain clearance while maneuvering over rising terrain in a box canyon. Also causal was the pilot's failure to adhere to procedures/directives regarding minimum altitude requirements.

Next page: https://openairdocs.org/ntsb-phases/450/cases.md?year=2006&page=2

## 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 year(c."eventDate") = 2006
  AND c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 450)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/450/cases?year=2006

---
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.