# NTSB investigations: Enroute

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

Page 98 of 718 · 35,885 cases

## Cases, newest first

- [NTSB CEN11LA189](https://openairdocs.org/ntsb/CEN11LA189.md): Bellanca 14-19-2 · Hueco Tanks, TX · Accident · No injuries · Limited investigation · Final report · Feb 14, 2011 · N7655B · Substantial damage
  > The loss of engine power for reasons undetermined.
- [NTSB ERA11LA141](https://openairdocs.org/ntsb/ERA11LA141.md): Piper PA-31-350 · Baltimore, MD · Accident · No injuries · Limited investigation · Final report · Feb 11, 2011 · N31NW · Substantial damage
  > An in-flight overload failure of the left elevator inboard balance weight rib for undetermined reasons.
- [NTSB WPR11LA139](https://openairdocs.org/ntsb/WPR11LA139.md): Boeing 767-300 · Ni'ihau, HI · Accident · Serious injuries · Limited investigation · Final report · Feb 10, 2011 · JA603J · No damage
  > An encounter with unanticipated convectively induced windshear and turbulence during descent.
- [NTSB WPR11LA131](https://openairdocs.org/ntsb/WPR11LA131.md): Aeronca 7AC · Novato, CA · Accident · No injuries · Limited investigation · Final report · Feb 10, 2011 · N2659E · Substantial damage
  > The pilot's use of a non-vented fuel cap, which resulted in a total loss of engine power due to fuel starvation.
- [NTSB ERA11WA145](https://openairdocs.org/ntsb/ERA11WA145.md): Scotts-Bell 47 47G-4A · El Tocuyo, Venezuela · Accident · 1 fatal · Foreign investigation · Feb 9, 2011 · YV447A · Destroyed
  > On February 9, 2011, about 1300 UTC, a Scotts-Bell 47, Inc., 47G-4A, YV-447A, collided into mountainous terrain near El Tocuyo, Venezuela. Visual meteorological conditions prevailed at the time and flight plan information is unknown for the foreign non-U.S.…
- [NTSB CEN11IA180](https://openairdocs.org/ntsb/CEN11IA180.md): Hawker Beechcraft C90 · Evansville, IN · Incident · No injuries · Incident investigation · Final report · Feb 9, 2011 · N2057C · Minor damage
  > The peel chip-type failure of the co-pilot's window during initial climb.
- [NTSB CEN11IA235](https://openairdocs.org/ntsb/CEN11IA235.md): Schlichtman Stol CH750 · Cassville, MO · Incident · No injuries · Incident investigation · Final report · Feb 6, 2011 · N904MS · Minor damage
  > The fatigue failure of the propeller hub retaining bolts due to insufficient clamping force.
- [NTSB CEN11CA221](https://openairdocs.org/ntsb/CEN11CA221.md): Cessna 150L · Gonzales, LA · Accident · No injuries · Data collection · Final report · Feb 5, 2011 · N11790 · Substantial damage
  > The flight instructor's failure to monitor the available fuel supply, which resulted in a loss of engine power due to fuel exhaustion.
- [NTSB WPR11LA113](https://openairdocs.org/ntsb/WPR11LA113.md): Piper PA-30 · Big Bear City, CA · Accident · Serious injuries · Limited investigation · Final report · Jan 30, 2011 · N64RJ · Substantial damage
  > The pilot’s failure to maintain the minimum single-engine control speed while on final approach for landing. Contributing to the accident was the pilot's decision to fly with a known deficiency in one engine and a loss of power in that engine for reasons that…
- [NTSB WPR11FA116](https://openairdocs.org/ntsb/WPR11FA116.md): Cessna 182K · Adrian, OR · Accident · 3 fatal · Field investigation · Final report · Jan 30, 2011 · N3083Q · Substantial damage
  > The non-instrument-rated pilot did not maintain sufficient altitude to clear mountainous terrain while in cruise flight in the dark.
- [NTSB WPR11FA114](https://openairdocs.org/ntsb/WPR11FA114.md): Mooney M20J · Furnace Creek, CA · Accident · 1 fatal · Field investigation · Final report · Jan 29, 2011 · N50BJ · Substantial damage
  > The magneto clamps were not securely fastened to the mount, which led to a partial loss of engine power and a subsequent forced landing on unsuitable terrain.
- [NTSB WPR11CA112](https://openairdocs.org/ntsb/WPR11CA112.md): Harvey Patten Rans S-6ES · Buckeye, AZ · Accident · Minor injuries · Data collection · Final report · Jan 28, 2011 · N8053R · Substantial damage
  > A disconnection of the elevator control linkage due to incorrect installation or maintenance, which was due to the retaining nut backing off the bolt and allowing the bolt to fall out.
- [NTSB ERA11WA143](https://openairdocs.org/ntsb/ERA11WA143.md): Beech 58 · Patrimonio Regina City, Brazil · Accident · 3 fatal · Foreign investigation · Jan 28, 2011 · PT-BOR · Substantial damage
  > On January 28, 2011, at 2047 coordinated universal time (1847 local time), a Beech 58, Brazilian registration PT-BOR, was substantially damaged when it impacted terrain near Patrimônio Regina City, Paraná, Brazil. The two pilots and the passenger were fatally…
- [NTSB ERA11LA130](https://openairdocs.org/ntsb/ERA11LA130.md): Cirrus Design SR22 · Cross City, FL · Accident · No injuries · Limited investigation · Final report · Jan 28, 2011 · N8135B · Substantial damage
  > A total loss of engine power resulting from the failure of the camshaft due to fatigue cracks. Contributing to the accident was the inadequate quality inspection of the camshaft after initial manufacture.
- [NTSB ERA11WA136](https://openairdocs.org/ntsb/ERA11WA136.md): Cessna 172 · Isola Fossara, Perugia, Italy · Accident · 1 fatal · Foreign investigation · Jan 27, 2011 · I-AMCO · Substantial damage
  > On January 27, 2011, at 1410 universal coordinated time, a Cessna 172N, Italian registration I-AMCO, was substantially damaged when it impacted terrain during cruise flight near Isola Fossara, Perugia, Italy. The certificated private pilot was fatally…
- [NTSB WPR11LA104](https://openairdocs.org/ntsb/WPR11LA104.md): Bice Air Creation GTE · Hayfork, CA · Accident · Minor injuries · Limited investigation · Final report · Jan 22, 2011 · N4668L · Substantial damage
  > The total loss of engine power during cruise flight, while operating in carburetor icing conditions.
- [NTSB OPS11IA246](https://openairdocs.org/ntsb/OPS11IA246.md): Boeing 777 · 80 SE of JFK (Atlantic Ocean), NY · Incident · No injuries · Incident investigation · Final report · Jan 21, 2011 · N766AN · No damage
  > Incomplete and incorrect coordination between air traffic controllers that resulted in the 777 and the two C17s being cleared to maintain the same altitude. Contributing to the incident was the controllers’ non-adherence to established communications…
- [NTSB WPR11LA102](https://openairdocs.org/ntsb/WPR11LA102.md): Piper PA-28-235 · San Luis Obispo, CA · Accident · No injuries · Limited investigation · Final report · Jan 20, 2011 · N8608W · Substantial damage
  > The loss of engine power due to the fatigue fracture of one attachment bolt for the left idler gear shaft, which resulted from an insufficient preload on both attachment bolts.
- [NTSB DCA11WA026](https://openairdocs.org/ntsb/DCA11WA026.md): Boeing 767 · Atlantic Ocean, Canada · Accident · Serious injuries · Foreign investigation · Jan 14, 2011 · C-GHLQ · No damage
  > .
- [NTSB ERA11LA112](https://openairdocs.org/ntsb/ERA11LA112.md): Beech A23-24 · Venice, FL · Accident · Serious injuries · Limited investigation · Final report · Jan 12, 2011 · N3670Q · Substantial damage
  > The loss of engine power for undetermined reasons.
- [NTSB CEN11FA150](https://openairdocs.org/ntsb/CEN11FA150.md): Piper PA 46-350P · Westcliffe, CO · Accident · 2 fatal · Field investigation · Final report · Jan 9, 2011 · N727MC · Substantial damage
  > The pilot's loss of control following an encounter with moderate to severe weather.
- [NTSB CEN11LA138](https://openairdocs.org/ntsb/CEN11LA138.md): Cessna 172H · Walnut Grove, MO · Accident · 1 fatal · Limited investigation · Final report · Jan 4, 2011 · N1416F · Substantial damage
  > The pilot's loss of control for undetermined reasons. Contributing to the accident was the pilot's fatigue.
- [NTSB ERA11LA104](https://openairdocs.org/ntsb/ERA11LA104.md): Piper PA-28-161 · Benton, PA · Accident · Serious injuries · Limited investigation · Final report · Jan 3, 2011 · N42997 · Substantial damage
  > The pilot's failure to maintain clearance from terrain during the night flight.
- [NTSB CEN11FA133](https://openairdocs.org/ntsb/CEN11FA133.md): Piper PA-46-310P · Milaca, MN · Accident · 2 fatal · Field investigation · Final report · Dec 30, 2010 · N9103N · Substantial damage
  > The pilot did not recover from an unusual attitude while operating in instrument meteorological conditions following a disconnect of the autopilot system for undetermined reasons. Contributing to the accident were the pilot’s lack of recent flight experience…
- [NTSB ENG11IA011](https://openairdocs.org/ntsb/ENG11IA011.md): Boeing 737 · San Francisco, CA · Incident · No injuries · Incident investigation · Final report · Dec 25, 2010 · N248WN · No damage
  > The probable cause of the undercowl in-flight engine fire was the insufficient installation torque of the bolts that secure the fuel manifold cover to the fuel manifold. Engine vibrations and fuel pressure cycles caused the bolts to gradually loosen further…
- [NTSB CEN11IA146](https://openairdocs.org/ntsb/CEN11IA146.md): Columbia LC41 · Milsap, TX · Incident · No injuries · Incident investigation · Final report · Dec 24, 2010 · N921DZ · Minor damage
  > A total loss of engine power in flight due to a loss of engine oil for reasons that could not be determined during a postaccident teardown examination of the engine.
- [NTSB ANC11CA005](https://openairdocs.org/ntsb/ANC11CA005.md): Piper PA-18-150 · Clear, AK · Accident · No injuries · Data collection · Final report · Dec 23, 2010 · N40283 · Substantial damage
  > The pilot's inadequate preflight inspection, which resulted in a loss of engine power due to water/ice in the fuel system.
- [NTSB WPR11LA081](https://openairdocs.org/ntsb/WPR11LA081.md): Apollo AS-III · Poipu, HI · Accident · No injuries · Limited investigation · Final report · Dec 22, 2010 · N157AP · Substantial damage
  > The pilot's lack of compliance with manufacturer's guidance for care and handling of the aircraft combined with incomplete preflight inspections, which resulted in an undetected material failure of the nose cone.
- [NTSB WPR11FA082](https://openairdocs.org/ntsb/WPR11FA082.md): Aero Commander 114B · Lander, WY · Accident · 3 fatal · Field investigation · Final report · Dec 22, 2010 · N799RS · Substantial damage
  > The non-instrument-rated pilot's decision to continue visual flight in instrument or marginal visual meteorological conditions in mountainous terrain, which resulted in controlled flight into terrain. Contributing to the accident was the pilot's lack of…
- [NTSB CEN11LA117](https://openairdocs.org/ntsb/CEN11LA117.md): Piper PA-46-350P · Lake Elmo, MN · Accident · Minor injuries · Limited investigation · Final report · Dec 18, 2010 · N92358 · Substantial damage
  > The pilot's improper fuel management which resulted in the loss of engine power due to fuel starvation. Contributing to the accident was the distraction of the cabin depressurization.
- [NTSB CEN11LA112](https://openairdocs.org/ntsb/CEN11LA112.md): Cirrus Design SR22 · Nacogdoches, TX · Accident · Minor injuries · Limited investigation · Final report · Dec 16, 2010 · N422MR · Substantial damage
  > The total loss of engine power during cruise flight for undetermined reasons.
- [NTSB DCA11WA018](https://openairdocs.org/ntsb/DCA11WA018.md): Boeing 737 · Rio De Janiero, Brazil · Incident · No injuries · Foreign investigation · Dec 13, 2010 · PR-WJO · No damage
  > The aircraft stopped to climb to cruising level at level 330, because the pilots realized that the pressurization system was not working properly. The "CABIN RATE OF CLIMB" was indicating +500ft/min, the "ALT CABIN INDEX" 8.0, and the differential pressure…
- [NTSB CEN11LA120](https://openairdocs.org/ntsb/CEN11LA120.md): Beech 300 · Minneapolis, MN · Accident · No injuries · Limited investigation · Final report · Dec 10, 2010 · N206K · Substantial damage
  > The pilot's failure to follow the aircraft checklist in locking the cabin door prior to departure which resulted in its in-flight separation.
- [NTSB DCA11WA017](https://openairdocs.org/ntsb/DCA11WA017.md): Boeing B737 · Brasilia, Brazil · Incident · No injuries · Foreign investigation · Dec 8, 2010 · PR-WJU · No damage
  > The Brazilian Centro de Investigação e Prevenção de Acidentes Aeronáuticos (CENIPA) has notified the NTSB of an incident involving a Boeing 737 that occurred on December 8, 2010. The NTSB has appointed a U.S. Accredited Representative to assist the AAIU…
- [NTSB ERA11FA078](https://openairdocs.org/ntsb/ERA11FA078.md): Cessna U206G · Leverett, MA · Accident · 2 fatal · Field investigation · Final report · Dec 5, 2010 · N9742Z · Substantial damage
  > A total loss of engine power due to the fatigue failure of the crankshaft, which resulted from improper tightening of the cylinder hold-down nuts.
- [NTSB CEN11LA097](https://openairdocs.org/ntsb/CEN11LA097.md): Piper PA 46-350P · Gulf of Mexico · Accident · No injuries · Limited investigation · Final report · Dec 4, 2010 · N350MM · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB WPR11LA067](https://openairdocs.org/ntsb/WPR11LA067.md): Piper PA 28-181 · Wittmann, AZ · Accident · Minor injuries · Limited investigation · Final report · Dec 1, 2010 · N4122F · Substantial damage
  > The pilot’s improper fuel management, which resulted in a total loss of engine power due to fuel starvation.
- [NTSB CEN11LA085](https://openairdocs.org/ntsb/CEN11LA085.md): Embraer EMB-135LR · Milwaukee, WI · Accident · Serious injuries · Limited investigation · Final report · Nov 30, 2010 · N12530 · No damage
  > An in-flight encounter with turbulence during cruise flight, which resulted in a serious injury to a flight attendant.
- [NTSB CEN11LA084](https://openairdocs.org/ntsb/CEN11LA084.md): Grumman American AA-5B · Navada, TX · Accident · No injuries · Limited investigation · Final report · Nov 27, 2010 · N4541L · Substantial damage
  > The loss of engine power due to debris obstructing the fuel filter, which resulted in fuel starvation. Contributing to the accident was the pilot's inadequate airspeed during the forced landing, which resulted in an aerodynamic stall.
- [NTSB ERA11LA071](https://openairdocs.org/ntsb/ERA11LA071.md): Cessna 172N · Bluffton, SC · Accident · Minor injuries · Limited investigation · Final report · Nov 21, 2010 · N882AV · Substantial damage
  > An in-flight upset of undetermined origin resulting in a forced landing.
- [NTSB ERA11CA069](https://openairdocs.org/ntsb/ERA11CA069.md): Cessna 172G · Winter Haven, FL · Accident · No injuries · Data collection · Final report · Nov 21, 2010 · N3700L · Substantial damage
  > The pilot's inadequate preflight/inflight fuel planning resulting in fuel exhaustion and total loss of engine power.
- [NTSB CEN11FA079](https://openairdocs.org/ntsb/CEN11FA079.md): Piper PA-24-260 · Norfolk, NE · Accident · 2 fatal · Field investigation · Final report · Nov 21, 2010 · N8675P · Substantial damage
  > The pilot’s decision to continue the flight into instrumental meteorological conditions which resulted in a collision with a tree.
- [NTSB WPR11FA061](https://openairdocs.org/ntsb/WPR11FA061.md): American Champion 8GCBC · Bremerton, WA · Accident · 1 fatal · Field investigation · Final report · Nov 18, 2010 · N273MA · Substantial damage
  > The pilot did not maintain clearance from terrain for undetermined reasons. Contributing to the accident were the pilot’s use of oxycodone and his severe coronary artery disease.
- [NTSB ERA11LA065](https://openairdocs.org/ntsb/ERA11LA065.md): Cessna 172 · Hobe Sound, FL · Accident · No injuries · Limited investigation · Final report · Nov 16, 2010 · N8306B · Substantial damage
  > A partial loss of engine power due to fuel contamination in the carburetor.
- [NTSB CEN11LA072](https://openairdocs.org/ntsb/CEN11LA072.md): Embraer ERJ 170-200 LR · Minneapolis, MN · Accident · No injuries · Limited investigation · Final report · Nov 15, 2010 · N604CZ · Substantial damage
  > The in-flight collision with a flock of birds during climb.
- [NTSB ERA11WA060](https://openairdocs.org/ntsb/ERA11WA060.md): Cirrus Design SR22 · Luzzara, Italy · Accident · No injuries · Foreign investigation · Nov 12, 2010 · N918SR · Substantial damage
  > On November 12, 2010, at 1000 universal coordinated time, a Cirrus Design Corp SR22, N918SR, experienced a total loss of engine power while in cruise flight, and was substantially damaged during a forced landing to field in Luzzara, Italy. The pilot was not…
- [NTSB OPS11IA101](https://openairdocs.org/ntsb/OPS11IA101.md): Boeing 737-832 · 66 NM East of Hobe Sound, FL · Incident · No injuries · Incident investigation · Final report · Nov 11, 2010 · N3742C · 2 aircraft · No damage
  > Air traffic controllers did not maintain required awareness of available flight data and aircraft positions, resulting in issuance of an incorrect altitude clearance that caused a loss of standard instrument flight rules separation between the two aircraft.
- [NTSB ERA11FA055](https://openairdocs.org/ntsb/ERA11FA055.md): Mooney M20F · Copake, NY · Accident · 2 fatal · Field investigation · Final report · Nov 11, 2010 · N6878V · Substantial damage
  > The pilot's failure to monitor and maintain clearance from mountainous terrain during a visual descent to the destination airport at night, which resulted in controlled flight into terrain.
- [NTSB CEN11LA066](https://openairdocs.org/ntsb/CEN11LA066.md): Gearn Geary D Swearingen SX300 · Milford, IA · Accident · 1 fatal · Limited investigation · Final report · Nov 10, 2010 · N3ZX · Substantial damage
  > A loss of control for undetermined reasons.
- [NTSB WPR11LA042](https://openairdocs.org/ntsb/WPR11LA042.md): Bombardier DHC-8-402 · Los Angeles, CA · Accident · No injuries · Limited investigation · Final report · Nov 8, 2010 · N422QX · Substantial damage
  > An in-flight collision with a bird.

Next page: https://openairdocs.org/ntsb-phases/400/cases.md?page=99

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
  crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
  current_codes AS (
    SELECT e.case_mkey, TRY_CAST(e."tier1Number" AS INTEGER) AS code,
      row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e."isDefiningEvent", false) DESC, e.position) AS n
    FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
    WHERE e.aircrafts_position = 1 AND e."tier1Number" GLOB '[1-9][0-9]*'
      AND (e."isDefiningEvent" OR e.case_mkey IN (SELECT "mKey" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE "isPre1982"))
  ),
  phases AS (
    SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
    FROM current_codes WHERE n = 1
    UNION ALL
    SELECT o.case_mkey, 'older', o."phaseOfFlightCode", w.main
    FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o."phaseOfFlightCode"
    WHERE o.aircrafts_position = 1 AND o."occurrenceNumber" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
  ),
  case_phases AS (
    SELECT p.*, c."eventDate", c."highestInjuryLevel" = 'Fatal' AS fatal, a.aircraft_model_code
    FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = p.case_mkey
    LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
    WHERE c."eventDate" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
  )
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 400)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/400/cases?page=98

---
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.