# NTSB investigations, 2006: 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 1 of 3 · 127 cases

## Latest cases

- [NTSB SEA07CA034](https://openairdocs.org/ntsb/SEA07CA034.md): Cessna 172 · Bonners Ferry, ID · Accident · No injuries · Data collection · Final report · Dec 17, 2006 · N19698 · Substantial damage
  > The pilot's failure to maintain directional control during the takeoff roll. Contributing factors include icy runway conditions and a snow berm adjacent to the runway.
- [NTSB MIA07CA027](https://openairdocs.org/ntsb/MIA07CA027.md): Richard F. Sheldon Aventura II · Palm Beach Gard, FL · Accident · Serious injuries · Data collection · Final report · Dec 15, 2006 · N554FS · Substantial damage
  > The pilot's failure maintain the proper airspeed during takeoff, which resulted in a stall.
- [NTSB NYC07FA048](https://openairdocs.org/ntsb/NYC07FA048.md): Bell 407 · Dagsboro, DE · Accident · 2 fatal · Field investigation · Final report · Dec 14, 2006 · N407JJ · Substantial damage
  > The pilot's improper decision to depart under visual flight rules into night instrument meteorological conditions. Contributing to the accident was the fog and the dark night conditions.
- [NTSB SEA07CA033](https://openairdocs.org/ntsb/SEA07CA033.md): Extra Flugzeugbau EA 300/L · Boulder City, NV · Accident · Minor injuries · Data collection · Final report · Dec 12, 2006 · N91BH · Substantial damage
  > The pilot-in-command's failure to maintain directional control of the airplane during takeoff.
- [NTSB CHI07LA034](https://openairdocs.org/ntsb/CHI07LA034.md): Cessna 172R · Lake in the Hil, IL · Accident · No injuries · Limited investigation · Final report · Dec 8, 2006 · N913MA · Substantial damage
  > The directional control not maintained/obtained by the pilot, and the lack of recent experience by the pilot. The snow bank was a contributing factor.
- [NTSB SEA07CA032](https://openairdocs.org/ntsb/SEA07CA032.md): Riley D-16A · Point Roberts, WA · Accident · No injuries · Data collection · Final report · Dec 1, 2006 · N119N · Substantial damage
  > the pre-existing crack in the nose wheel fork, which allowed separation of the nose wheel during the takeoff roll, resulting in collapse of the nose landing gear.
- [NTSB DEN07LA030](https://openairdocs.org/ntsb/DEN07LA030.md): Piper PA-46-500TP · Steamboat Springs, CO · Accident · No injuries · Limited investigation · Final report · Nov 30, 2006 · N804JH · Substantial damage
  > The inadequate design of the engine mount, which caused an uncommanded left turn, loss of directional control, and impact with snow-covered terrain. Contributing to the accident was the low nose gear tire pressure.
- [NTSB SEA07LA023](https://openairdocs.org/ntsb/SEA07LA023.md): Cessna 180K · Woods Cross, UT · Accident · No injuries · Limited investigation · Final report · Nov 25, 2006 · N180BM · Substantial damage
  > The pilot's failure to maintain directional control during the takeoff roll. Factors include a ditch near the side of the runway.
- [NTSB ATL07CA020](https://openairdocs.org/ntsb/ATL07CA020.md): Cessna 190 · Chattanooga, TN · Accident · No injuries · Data collection · Final report · Nov 21, 2006 · N195AB · Substantial damage
  > The pilot's failure to maintain directional control on takeoff resulting in a collapse of the left main landing gear when the airplane swerved. A factor in the accident was wake turbulence from a landing airplane.
- [NTSB SEA07LA020](https://openairdocs.org/ntsb/SEA07LA020.md): Cessna 170B · Billings, MT · Accident · No injuries · Limited investigation · Final report · Nov 18, 2006 · N2619D · Substantial damage
  > The flight instructor's inadequate remedial action to maintain directional control, which resulted in a ground loop/swerve during takeoff roll. A factor was the failure of the pilot who was receiving instruction to maintain directional control.
- [NTSB DFW07CA025](https://openairdocs.org/ntsb/DFW07CA025.md): Eiben Theodore Quickie Q-200 · Denton, TX · Accident · No injuries · Data collection · Final report · Nov 11, 2006 · N218E · Substantial damage
  > The loss of control during takeoff as result of the failure of the right wing for undetermined reasons.
- [NTSB NYC07CA024](https://openairdocs.org/ntsb/NYC07CA024.md): Utva 66 V-51 · Hilton, NY · Accident · No injuries · Data collection · Final report · Nov 8, 2006 · N5016W · Substantial damage
  > The pilot's inadequate visual lookout, which resulted in a collision with a dock during takeoff.
- [NTSB DCA07IA008](https://openairdocs.org/ntsb/DCA07IA008.md): Boeing 737-200 · Seattle, WA · Incident · No injuries · Incident investigation · Final report · Oct 30, 2006 · N740AS · No damage
  > the flight crew's failure to cross-check and verify that the airplane was on the correct runway before takeoff. Contributing to the incident was the flight crew's self-induced pressure to heed the takeoff clearance during a period of increased workload.
- [NTSB ATL07CA009](https://openairdocs.org/ntsb/ATL07CA009.md): Lawing Thomas R Exec 162-F · Aiken, SC · Accident · No injuries · Data collection · Final report · Oct 14, 2006 · N848TL · Substantial damage
  > The pilot’s failure to adequately compensate for wind conditions during takeoff which resulted in a loss of tail rotor effectiveness and a roll over during an attempted forced landing.
- [NTSB NYC07CA002](https://openairdocs.org/ntsb/NYC07CA002.md): Cutler VariEze · Perkasie, PA · Accident · No injuries · Data collection · Final report · Oct 7, 2006 · N46RC · Substantial damage
  > The pilot's excessive rotation on takeoff, which resulted in a propeller blade strike, and subsequent forced landing to a field.
- [NTSB SEA07LA005](https://openairdocs.org/ntsb/SEA07LA005.md): Hatcher Fisher Celebrity · Anacortes, WA · Accident · Minor injuries · Limited investigation · Final report · Oct 6, 2006 · N635GH · Substantial damage
  > A loss of engine power during takeoff for undetermined reasons.
- [NTSB LAX07LA002](https://openairdocs.org/ntsb/LAX07LA002.md): McDonnell Douglas 369E · Hilo, HI · Accident · Minor injuries · Limited investigation · Final report · Oct 2, 2006 · N142MK · Substantial damage
  > Inadvertent application of the lateral cyclic friction, which resulted in a loss of control and subsequent hard landing.
- [NTSB DEN07CA001](https://openairdocs.org/ntsb/DEN07CA001.md): Brantly Helicopter B-2 · Arkansas City, KS · Accident · Minor injuries · Data collection · Final report · Oct 1, 2006 · N5950X · Substantial damage
  > the pilot's failure to maintain aircraft control during takeoff. A contributing factor was the low rotor RPM.
- [NTSB ATL06CA132](https://openairdocs.org/ntsb/ATL06CA132.md): Cessna 180K · Mooresville, NC · Accident · No injuries · Data collection · Final report · Sep 28, 2006 · N64382 · Substantial damage
  > The pilot's failure to maintain directional control during the takeoff roll which resulted in a ground loop.
- [NTSB NYC06FA230](https://openairdocs.org/ntsb/NYC06FA230.md): Beech S35 · Lake City, FL · Accident · 1 fatal · Field investigation · Final report · Sep 27, 2006 · N5852S · Destroyed
  > A loss of control during an unintentional takeoff for an undetermined reason.
- [NTSB DEN06CA134](https://openairdocs.org/ntsb/DEN06CA134.md): Cessna 152 · Bennett, CO · Accident · No injuries · Data collection · Final report · Sep 26, 2006 · N93873 · Substantial damage
  > The pilot's failure to maintain control of the airplane during the aborted takeoff. Factors contributing to the accident were the low airspeed and the pilot's improper in-flight planning.
- [NTSB CHI06CA272](https://openairdocs.org/ntsb/CHI06CA272.md): Boeing A75N1 · Garrettsville, OH · Accident · No injuries · Data collection · Final report · Sep 26, 2006 · N985BC · Substantial damage
  > The pilot's failure to maintain directional control during the takeoff roll. The bush and tree were factors to the accident.
- [NTSB ANC06CA138](https://openairdocs.org/ntsb/ANC06CA138.md): Cessna 172 · Palmer, AK · Accident · No injuries · Data collection · Final report · Sep 24, 2006 · N7939B · Substantial damage
  > The pilot's failure to follow the checklist to ensure the proper positioning of the magneto switch during the takeoff roll, which resulted in a partial loss of engine power, and a subsequent collision with high vegetation during the takeoff run. A factor…
- [NTSB CHI06LA263](https://openairdocs.org/ntsb/CHI06LA263.md): Piper PA-28-140 · Prospect Height, IL · Accident · Minor injuries · Limited investigation · Final report · Sep 17, 2006 · N560DH · Substantial damage
  > The partial loss of engine power during takeoff due to the flight crews failure to use carburetor heat and the flight instructor's inadequate planning/decision. A factor was the unsuitable terrain for a forced landing.
- [NTSB SEA06CA180](https://openairdocs.org/ntsb/SEA06CA180.md): Beech B36TC · Cedar City, UT · Accident · No injuries · Data collection · Final report · Sep 12, 2006 · N2153R · Substantial damage
  > Inadvertent collision with a deer during takeoff. A contributing factor was night conditions.
- [NTSB SEA06CA179](https://openairdocs.org/ntsb/SEA06CA179.md): Piper PA-32-300 · Kanab, UT · Accident · No injuries · Data collection · Final report · Sep 11, 2006 · N4202R · Substantial damage
  > The pilot's failure to maintain aircraft control during the takeoff roll. Contributing factors were the rough/uneven conditions of the dirt runway, the wind gusts, and the berms and ditches on both sides of the runway.
- [NTSB DFW06LA208](https://openairdocs.org/ntsb/DFW06LA208.md): Morton Mustang II · Conroe, TX · Accident · No injuries · Limited investigation · Final report · Sep 7, 2006 · N696DM · Substantial damage
  > The loss of engine power for an undetermined reason. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB SEA06CA178](https://openairdocs.org/ntsb/SEA06CA178.md): Cessna 150 · Laurel, MT · Accident · Minor injuries · Data collection · Final report · Sep 6, 2006 · N6581T · Substantial damage
  > The pilot's excessive application of the brakes during an aborted takeoff, which resulted in a nose over.
- [NTSB NYC06LA216](https://openairdocs.org/ntsb/NYC06LA216.md): Cessna 170B · Hampton, NH · Accident · Serious injuries · Limited investigation · Final report · Sep 4, 2006 · N1857C · Substantial damage
  > The pilot's failure to maintain directional control during takeoff.
- [NTSB CHI06CA253](https://openairdocs.org/ntsb/CHI06CA253.md): Hedeman Tailwind W8 · Platteville, WI · Accident · No injuries · Data collection · Final report · Sep 3, 2006 · N4FD · Substantial damage
  > The loss of engine power as a result of the pilot's inadequate preflight which resulted in a blocked fuel vent that led to fuel starvation.
- [NTSB LAX06LA274](https://openairdocs.org/ntsb/LAX06LA274.md): North American Navion A · El Centro, CA · Accident · Minor injuries · Limited investigation · Final report · Aug 28, 2006 · N947A · Substantial damage
  > The partial loss of engine power during takeoff, as a result of air being sucked into the fuel system due to a worn fuel selector valve stem and a bent detent ring.
- [NTSB LAX06LA273](https://openairdocs.org/ntsb/LAX06LA273.md): Eurocopter AS 350 B3 · Casa Grande, AZ · Accident · No injuries · Limited investigation · Final report · Aug 27, 2006 · N973AE · Substantial damage
  > Internal damage to the stop electro valve which resulted in fuel starvation and subsequent loss of engine power during takeoff.
- [NTSB DEN06CA117](https://openairdocs.org/ntsb/DEN06CA117.md): Gordon Vans RV-6 · Erie, CO · Accident · No injuries · Data collection · Final report · Aug 24, 2006 · N442E · Substantial damage
  > the pilot's failure to maintain directional control during the takeoff roll. Contributing to the accident was the crosswind.
- [NTSB CHI06CA254](https://openairdocs.org/ntsb/CHI06CA254.md): Air Tractor AT-400A · Alliance, NE · Accident · No injuries · Data collection · Final report · Aug 24, 2006 · N73006 · Substantial damage
  > The pilot's inadequate preflight inspection which led to the aircraft tow bar not being removed prior to flight.
- [NTSB DFW06CA200](https://openairdocs.org/ntsb/DFW06CA200.md): Aeronca 11AC · Searcy, AR · Accident · No injuries · Data collection · Final report · Aug 23, 2006 · N9365E · Substantial damage
  > The student pilot's inadequate compensation for the existing wind conditions and the flight instructor's delayed remedial action to maintain directional control. A contributing factor was the crosswind.
- [NTSB LAX06LA266](https://openairdocs.org/ntsb/LAX06LA266.md): Saloff Sonerai Iilt · Williams, AZ · Accident · 1 fatal · Limited investigation · Final report · Aug 18, 2006 · N90420 · Minor damage
  > the pilot's inadequate compensation for the wind conditions and failure to maintain directional control.
- [NTSB ANC06CA115](https://openairdocs.org/ntsb/ANC06CA115.md): Piper PA-18 · Tok, AK · Accident · No injuries · Data collection · Final report · Aug 16, 2006 · N8597D · Substantial damage
  > The pilot's failure to compensate for the wind conditions during the takeoff roll, which resulted in a collision with a tree. A factor contributing to the accident was a crosswind.
- [NTSB ANC06CA111](https://openairdocs.org/ntsb/ANC06CA111.md): Piper PA-14 · Fairbanks, AK · Accident · No injuries · Data collection · Final report · Aug 15, 2006 · N5402H · Substantial damage
  > The pilot's selection of an unsuitable off-airport site for takeoff, which resulted in an on-ground encounter with rough-uneven terrain, a loss of control, and a collision with small trees. Factors associated with the accident were the uneven terrain, and…
- [NTSB DEN06LA113](https://openairdocs.org/ntsb/DEN06LA113.md): Piper PA-23-160 · Santa Fe, NM · Accident · No injuries · Limited investigation · Final report · Aug 12, 2006 · N245TB · Substantial damage
  > the pilot's improper decision to continue the attempted takeoff when Vx airspeed was not obtained, and failure to abort the takeoff during ground roll which resulted in an impact on the remaining runway with the landing gear retracted. A contributing factor…
- [NTSB CHI06CA229](https://openairdocs.org/ntsb/CHI06CA229.md): Cessna 150 · Jamestown, ND · Accident · No injuries · Data collection · Final report · Aug 12, 2006 · N17015 · Substantial damage
  > The pilot's inadequate preflight planning resulted in the pilot not attaining the proper takeoff climb and failure to maintain terrain clearance. Contributing factors included the transmission wires, the row of trees, and the field of corn.
- [NTSB SEA06CA157](https://openairdocs.org/ntsb/SEA06CA157.md): Piggott Bearhawk · Port Angeles, WA · Accident · No injuries · Data collection · Final report · Aug 5, 2006 · N347JP · Substantial damage
  > The loss of directional control as a result of the disconnected tail wheel steering system, which led to an inadvertent ground loop during the landing roll.
- [NTSB NYC06CA196](https://openairdocs.org/ntsb/NYC06CA196.md): Cessna 172N · Windsor, NH · Accident · No injuries · Data collection · Final report · Aug 5, 2006 · N73672 · Substantial damage
  > The pilot's delay in aborting the takeoff, which resulted in an overrun and subsequent collision with trees. A factor in the accident was the tailwind.
- [NTSB SEA06CA148](https://openairdocs.org/ntsb/SEA06CA148.md): Cessna 172F · American Falls, ID · Accident · No injuries · Data collection · Final report · Jul 29, 2006 · N8707U · Substantial damage
  > The pilot's failure to maintain an airspeed above stall speed. Factors include his improper decision to takeoff with a tailwind, and the effects of the tailwind upon the aircraft's takeoff performance.
- [NTSB CHI06FA210](https://openairdocs.org/ntsb/CHI06FA210.md): de Havilland DHC-6-100 · Sullivan, MO · Accident · 6 fatal · Class 1 · Field · Final report · Jul 29, 2006 · N203E · Substantial damage
  > the pilot's failure to maintain airspeed following a loss of power in the right engine due to the fracturing of compressor turbine blades for undetermined reasons. Contributing to some parachutists' injuries was the lack of a more effective restraint system…
- [NTSB DEN06CA106](https://openairdocs.org/ntsb/DEN06CA106.md): Cessna 140 · Cunningham, KS · Accident · No injuries · Data collection · Final report · Jul 28, 2006 · N89669 · Substantial damage
  > the pilot's failure to maintain directional control during the aborted takeoff. A contributing factor was the mud.
- [NTSB CHI06CA204](https://openairdocs.org/ntsb/CHI06CA204.md): Cessna 172N · Wadsworth, OH · Accident · Minor injuries · Data collection · Final report · Jul 26, 2006 · N739TG · Substantial damage
  > The pilot used an improper aborted takeoff procedure in that she failed to reduce the engine power. Factors associated with the accident were the tailwind, the wrong runway selection, the pilot's lack of experience, the guard rail, and the embankment.
- [NTSB SEA06CA176](https://openairdocs.org/ntsb/SEA06CA176.md): Cessna 185 · Cove, OR · Accident · No injuries · Data collection · Final report · Jul 24, 2006 · N477G · Substantial damage
  > The pilot’s failure to maintain directional control during the takeoff roll. Factors include wet grass and trees.
- [NTSB OPS06IA008](https://openairdocs.org/ntsb/OPS06IA008.md): Boeing 737-322 · Chicago, IL · Incident · No injuries · Incident investigation · Final report · Jul 24, 2006 · N315UA · 2 aircraft · No damage
  > The failure of the ORD tower south local controller to monitor Atlas Air flight 6972 on arrival to runway 14R and subsequently clearing United Airlines flight 1015 for takeoff on intersecting runway 27L causing a loss of separation between the two aircraft.
- [NTSB ATL06LA111](https://openairdocs.org/ntsb/ATL06LA111.md): Canadair F86 · Hickory, NC · Accident · 1 fatal · Limited investigation · Final report · Jul 24, 2006 · N86FS · Destroyed
  > The pilot's improper assembly of the airplanes brakes, exceeding the authorized gross weight of the airplane at takeoff, and the pilot's failure to abort the takeoff in sufficient time to avoid an on-ground collision with fixed objects. A factor in the…
- [NTSB LAX06LA251](https://openairdocs.org/ntsb/LAX06LA251.md): Piper PA-28-161 · Grass Valley, CA · Accident · No injuries · Limited investigation · Final report · Jul 23, 2006 · N2115R · Substantial damage
  > The loss of available engine power due to vapor lock. A contributing factor was the high temperature.

Next page: https://openairdocs.org/ntsb-phases/300/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 = 300)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/300/cases?year=2006

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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.
