# 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 130 of 718 · 35,885 cases

## Cases, newest first

- [NTSB LAX06FA014](https://openairdocs.org/ntsb/LAX06FA014.md): Lancair LC-41-550FG · Warner Springs, CA · Accident · 3 fatal · Field investigation · Final report · Oct 17, 2005 · N285JB · Destroyed
  > The flight crew's failure to maintain adequate terrain clearance and their decision to continue flight into known adverse weather conditions. Contributing to the accident was overcast conditions, and terrain obscuration. A finding of the investigation is that…
- [NTSB DFW06CA008](https://openairdocs.org/ntsb/DFW06CA008.md): Cessna 172P · Hitchcock, TX · Accident · Minor injuries · Data collection · Final report · Oct 17, 2005 · N53795 · Substantial damage
  > A loss of engine power due to a cracked cylinder.
- [NTSB CHI06IA011](https://openairdocs.org/ntsb/CHI06IA011.md): Bombardier CL-600-2B19 · West Grove, PA · Incident · No injuries · Incident investigation · Final report · Oct 17, 2005 · N244PS · Minor damage
  > The separation of the left engine exhaust nozzle during cruise climb due to inadequately designed attachment hardware.
- [NTSB DFW06LA007](https://openairdocs.org/ntsb/DFW06LA007.md): Cessna 140 · Big Flat, AR · Accident · Serious injuries · Limited investigation · Final report · Oct 16, 2005 · N72901 · Substantial damage
  > The loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for a forced landing.
- [NTSB SEA06LA006](https://openairdocs.org/ntsb/SEA06LA006.md): Boeing B75N1 · Burlington, WA · Accident · No injuries · Limited investigation · Final report · Oct 15, 2005 · N5158N · Substantial damage
  > The pilot's failure to maintain clearance from a utility pole during a precautionary landing. The utility pole was a factor.
- [NTSB MIA06LA006](https://openairdocs.org/ntsb/MIA06LA006.md): Steven W. Jones KR2 · Venice, FL · Accident · 1 fatal · Limited investigation · Final report · Oct 15, 2005 · N212KR · Substantial damage
  > The in-flight collision with the water for undetermined reasons.
- [NTSB LAX06IA011](https://openairdocs.org/ntsb/LAX06IA011.md): Hughes 369D · Kahului, HI · Incident · No injuries · Incident investigation · Final report · Oct 14, 2005 · N58267 · Minor damage
  > The fatigue cracking and failure of the tail rotor control rod during cruise flight, which resulted in a hard landing during the precautionary landing.
- [NTSB CHI06FA010](https://openairdocs.org/ntsb/CHI06FA010.md): Plavcan Lancair 235 · Rootstown, OH · Accident · 4 fatal · Field investigation · Final report · Oct 14, 2005 · N235U · 2 aircraft · Destroyed
  > The failure of both pilots to maintain an adequate visual lookout during cruise flight, which resulted in their failure to see and avoid each other and a midair collision.
- [NTSB ANC06LA005](https://openairdocs.org/ntsb/ANC06LA005.md): Crisenbery Northman 2+2 · Nenana, AK · Accident · No injuries · Limited investigation · Final report · Oct 14, 2005 · N239PT · Substantial damage
  > A loss of engine power during cruise flight due to a cracked oil filter housing and subsequent loss of engine oil, which resulted in a forced landing in trees.
- [NTSB NYC06LA010](https://openairdocs.org/ntsb/NYC06LA010.md): Cessna 150F · Pineville, KY · Accident · 1 fatal · Limited investigation · Final report · Oct 13, 2005 · N8684S · Substantial damage
  > The pilot's continued VFR flight into IMC conditions, which resulted in controlled flight into terrain. Factors in the accident were the low cloud ceiling and fog.
- [NTSB ENG06IA001](https://openairdocs.org/ntsb/ENG06IA001.md): Cessna Citation 650 · Madison, WI · Incident · No injuries · Incident investigation · Final report · Oct 9, 2005 · N175DP · Minor damage
  > The inadequate design of the engine's interstage transition duct that yielded after the LPT stage 3 blades had separated and allowed the uncontained release of turbine debris. A contributing factor was the separation of a turbine blade.
- [NTSB DEN06LA003](https://openairdocs.org/ntsb/DEN06LA003.md): Aeronca 7AC · Berthoud, CO · Accident · No injuries · Limited investigation · Final report · Oct 9, 2005 · N84580 · Destroyed
  > the pilot's improper in-flight decision making which resulted in loss of engine power due to fuel exhaustion. Contributing factors are the transmission wires and the metal pole.
- [NTSB CHI06LA005](https://openairdocs.org/ntsb/CHI06LA005.md): Cessna 172RG · Union City, OH · Accident · 1 fatal · Limited investigation · Final report · Oct 9, 2005 · N6085R · Destroyed
  > The pilot's failure to perform a preflight weather evaluation which led to his inadvertent flight into instrument meteorological conditions and his spatial disorientation. The low ceilings and the dark night were contributing factors.
- [NTSB CHI06CA004](https://openairdocs.org/ntsb/CHI06CA004.md): Cessna 172M · Lake Elmo, MN · Accident · Minor injuries · Data collection · Final report · Oct 9, 2005 · N13585 · Substantial damage
  > The pilot's inadequate recovery from a bounced landing, which resulted in an overload failure of the nose landing gear. Contributing to the accident was a loss of engine power due to fuel exhaustion as a result of inadequate preflight planning by the pilot.
- [NTSB ATL06LA003](https://openairdocs.org/ntsb/ATL06LA003.md): Grumman F6F · Monterey, TN · Accident · 1 fatal · Limited investigation · Final report · Oct 8, 2005 · N4994V · Substantial damage
  > The pilot's inadequate preflight planning and inadequate evaluation of the weather, inadequate visual lookout, and his failure to maintain clearance, resulted in the in-flight collision with power lines.
- [NTSB DEN06LA004](https://openairdocs.org/ntsb/DEN06LA004.md): Piper PA-28-140 · Truth or Conseq, NM · Accident · 1 fatal · Limited investigation · Final report · Oct 7, 2005 · N55910 · Destroyed
  > the pilot's attempt to fly VFR into instrument meteorological conditions, and his failure to maintain terrain clearance. Contributing factors were the reported low ceiling and mountain obscuration, resulting in the pilot being unable to maintain a visual…
- [NTSB CHI06CA002](https://openairdocs.org/ntsb/CHI06CA002.md): Creed RV-4 · Mitchell, SD · Accident · No injuries · Data collection · Final report · Oct 6, 2005 · N149KC · Substantial damage
  > The mechanic's improper installation of the air filter assembly which resulted in foreign debris inside the carburetor. A factor associated with the accident was the rough terrain on which the airplane was landed.
- [NTSB DFW06CA002](https://openairdocs.org/ntsb/DFW06CA002.md): Culver LCA · McGregor, TX · Accident · Minor injuries · Data collection · Final report · Oct 4, 2005 · N32476 · Substantial damage
  > The pilot's improper preflight planning, which resulted in a loss of engine power due to fuel starvation. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB DEN06FA001](https://openairdocs.org/ntsb/DEN06FA001.md): Beechcraft V35B · Barnum, WY · Accident · 2 fatal · Field investigation · Final report · Oct 4, 2005 · N9085Q · Destroyed
  > the pilot's improper in-flight planning and decision to continue flight into forecasted icing conditions and the pilot's inability to maintain aircraft control due to wing contamination in the form of ice. Contributing factors included the weather conditions…
- [NTSB ANC06LA001](https://openairdocs.org/ntsb/ANC06LA001.md): Cessna 185 · Iliamna, AK · Accident · No injuries · Limited investigation · Final report · Oct 3, 2005 · N9950X · Substantial damage
  > The pilot's inadequate preflight inspection, which failed to detect water-contaminated fuel, resulting in a loss of engine power during cruise flight, and subsequent in-flight collision with terrain.
- [NTSB MIA06CA009](https://openairdocs.org/ntsb/MIA06CA009.md): Cessna 172N · Punta Gorda, FL · Accident · No injuries · Data collection · Final report · Oct 2, 2005 · N952AC · Substantial damage
  > The in-flight collision with a bird resulting in substantial damage to the airplane.
- [NTSB ATL06CA001](https://openairdocs.org/ntsb/ATL06CA001.md): Beech D-95A · Greensboro, NC · Accident · Minor injuries · Data collection · Final report · Oct 1, 2005 · N5606S · Substantial damage
  > The pilot mistakenly shut down the operating engine when the passenger interfered with the rudder pedals as he attempted to identify the inoperative engine.
- [NTSB MIA05LA164](https://openairdocs.org/ntsb/MIA05LA164.md): North American T-28C · Arcadia, FL · Accident · No injuries · Limited investigation · Final report · Sep 30, 2005 · N176RD · Destroyed
  > A loss of engine power due to the failure of the master rod bearing.
- [NTSB CHI05LA276](https://openairdocs.org/ntsb/CHI05LA276.md): Stits Playboy SA3B Lightning · Kimball, NE · Accident · 1 fatal · Limited investigation · Final report · Sep 30, 2005 · N4747G · Substantial damage
  > The inadvertent stall and low airspeed by the pilot following takeoff. Contributing factors were the low altitude at the time of occurrence, the high density altitude, and the propeller.
- [NTSB ATL05CA165](https://openairdocs.org/ntsb/ATL05CA165.md): Cessna C172F · Sparta, TN · Accident · No injuries · Data collection · Final report · Sep 30, 2005 · N8513U · Substantial damage
  > The pilot's delay in applying carburetor heat that resulted in the loss of engine power due to carburetor ice.
- [NTSB ANC05LA150](https://openairdocs.org/ntsb/ANC05LA150.md): Cessna 550 · Ft Yukon, AK · Accident · Minor injuries · Limited investigation · Final report · Sep 30, 2005 · N77ND · Substantial damage
  > The pilot's improper use of anti-icing equipment during cruise flight, which resulted in ice ingestion into both engines (foreign object damage), the complete loss of engine power in both engines, and an emergency descent and landing on tree covered terrain.…
- [NTSB LAX05CA320](https://openairdocs.org/ntsb/LAX05CA320.md): Aeronca 7AC · Snelling, CA · Accident · No injuries · Data collection · Final report · Sep 29, 2005 · N1938E · Substantial damage
  > the loss of engine power for undetermined reasons.
- [NTSB DEN05CA147](https://openairdocs.org/ntsb/DEN05CA147.md): Cessna T210L · Las Animas, CO · Accident · No injuries · Data collection · Final report · Sep 24, 2005 · N94263 · Substantial damage
  > the loss of engine power due to fuel exhaustion. Contributing factors were the pilot's inadequate preflight planning and lack of suitable terrain for the forced landing.
- [NTSB CHI05FA272](https://openairdocs.org/ntsb/CHI05FA272.md): Mitsubishi MU-2B-36 · West Memphis, AR · Accident · 1 fatal · Field investigation · Final report · Sep 23, 2005 · N103RC · Destroyed
  > The pilot's improper in-flight decision not to land at the departure runway or other available airports during the emergency descent, and his failure to maintain clearance from a vehicle and terrain. Contributing factors were a false engine fire warning…
- [NTSB DFW05CA248](https://openairdocs.org/ntsb/DFW05CA248.md): Piper PA-46T · El Reno, OK · Accident · No injuries · Data collection · Final report · Sep 22, 2005 · N7WS · Substantial damage
  > The improper flare which resulted in a hard landing. A related factor was the instructor's delayed remedial action.
- [NTSB LAX05FA311](https://openairdocs.org/ntsb/LAX05FA311.md): Robinson Helicopter R22 Beta · Baker, CA · Accident · 1 fatal · Field investigation · Final report · Sep 20, 2005 · N957SH · Substantial damage
  > The pilot's continued VFR flight into adverse weather conditions that resulted in a collision with mountainous terrain. Contributing to the accident was the obscuration of mountainous terrain by rain and low clouds, moderate turbulence, and the pilot's…
- [NTSB DFW05CA246](https://openairdocs.org/ntsb/DFW05CA246.md): Taylorcraft BC12-D · Guion, AR · Accident · No injuries · Data collection · Final report · Sep 20, 2005 · N95006 · Substantial damage
  > The loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB LAX05LA303](https://openairdocs.org/ntsb/LAX05LA303.md): North American Navion A · Chowchilla, CA · Accident · Minor injuries · Limited investigation · Final report · Sep 19, 2005 · N91597 · Substantial damage
  > the loss of engine power for undetermined reasons.
- [NTSB IAD05LA139](https://openairdocs.org/ntsb/IAD05LA139.md): Hart None · Broadalbin, NY · Accident · No injuries · Limited investigation · Final report · Sep 19, 2005 · UNREG · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB DEN05LA143](https://openairdocs.org/ntsb/DEN05LA143.md): North American SNJ-5 · Torrington, WY · Accident · No injuries · Limited investigation · Final report · Sep 19, 2005 · N212TC · Substantial damage
  > failure of the #7 connecting rod, causing engine seizure. A contributing factor was the berm.
- [NTSB DFW05FA242](https://openairdocs.org/ntsb/DFW05FA242.md): Akro Tech Aviation Inc. Giles G-300 · Yukon, OK · Accident · 1 fatal · Field investigation · Final report · Sep 18, 2005 · N300NW · Destroyed
  > The catastrophic separation of the canopy as result of the failure of the forward canopy hinge while performing aerobatics and the subsequent incapacitation of the pilot.
- [NTSB LAX05CA301](https://openairdocs.org/ntsb/LAX05CA301.md): Piper PA 28-181 · Petaluma, CA · Accident · No injuries · Data collection · Final report · Sep 17, 2005 · N8103X · Substantial damage
  > a loss of engine power due to fuel exhaustion.
- [NTSB DEN05LA141](https://openairdocs.org/ntsb/DEN05LA141.md): Denight 100D2 · Hudson, CO · Accident · 2 fatal · Limited investigation · Final report · Sep 16, 2005 · N197D · Destroyed
  > the pilot's failure to maintain adequate airspeed resulting in an inadvertent stall/spin.
- [NTSB CHI05CA269](https://openairdocs.org/ntsb/CHI05CA269.md): Beech F33A · Emerson, NE · Accident · No injuries · Data collection · Final report · Sep 16, 2005 · N8225F · Substantial damage
  > The loss of engine power due to the pilot's failure to verify the fuel selector position which resulted in fuel starvation. Factors were the low altitude, the crops and the fence.
- [NTSB IAD05LA136](https://openairdocs.org/ntsb/IAD05LA136.md): Cessna 177RG · Cadiz, KY · Accident · Serious injuries · Limited investigation · Final report · Sep 15, 2005 · N35552 · Substantial damage
  > The pilot's inadequate in-flight decision, which resulted in fuel exhaustion and subsequent loss of engine power. A factor was the pilot's early flare during the emergency landing.
- [NTSB MIA05LA157](https://openairdocs.org/ntsb/MIA05LA157.md): Grumman American AA-5A · Ponte Vedra, FL · Accident · No injuries · Limited investigation · Final report · Sep 14, 2005 · N9954U · Substantial damage
  > A loss of engine power for undetermined reasons, which resulted in the airplane being ditched in a marsh.
- [NTSB MIA05LA155](https://openairdocs.org/ntsb/MIA05LA155.md): Cessna 172M · Ocean Springs, MS · Accident · Serious injuries · Limited investigation · Final report · Sep 13, 2005 · N901NS · Substantial damage
  > The pilot's mismanagement of available fuel and continued operation with the fuel selector set to the left tank position, which resulted in fuel starvation and subsequent loss of engine power.
- [NTSB DEN05CA144](https://openairdocs.org/ntsb/DEN05CA144.md): Bradford Haines Glastar · Spanish Fork, UT · Accident · No injuries · Data collection · Final report · Sep 13, 2005 · N46289 · Substantial damage
  > the pilot's failure to strain the fuel prior to flight resulting in fuel starvation. Contributing to the accident was the loss of engine power due to the plugged fuel filter.
- [NTSB IAD05LA138](https://openairdocs.org/ntsb/IAD05LA138.md): Piper PA-46-500TP · Rangeley, ME · Accident · No injuries · Limited investigation · Final report · Sep 12, 2005 · N747AW · Substantial damage
  > A malfunction of the yaw damper system due to fluid contamination. Factors in the accident were the air condition exhaust vent design and the design stress limits of the airplane were exceeded.
- [NTSB DFW05CA235](https://openairdocs.org/ntsb/DFW05CA235.md): Bell 47G · Swifton, AR · Accident · Serious injuries · Data collection · Final report · Sep 10, 2005 · N862Z · Substantial damage
  > The pilot's failure to maintain clearance with the power lines. A contributing factor was sun glare.
- [NTSB ATL05CA159](https://openairdocs.org/ntsb/ATL05CA159.md): Piper 28 · Andulusia, AL · Accident · No injuries · Data collection · Final report · Sep 10, 2005 · N8153N · Substantial damage
  > The pilot's inadequate planning of the fuel supply, which resulted in fuel exhaustion and loss of engine power.
- [NTSB ANC05LA143](https://openairdocs.org/ntsb/ANC05LA143.md): Cessna 180C · Igiugig, AK · Accident · No injuries · Limited investigation · Final report · Sep 10, 2005 · N9254T · Substantial damage
  > The failure of the airplane's starter to disengage, which resulted in an overheated starter, smoke in the cockpit, and an emergency landing. A factor associated with the accident was soft terrain encountered during the emergency landing.
- [NTSB DFW05CA234](https://openairdocs.org/ntsb/DFW05CA234.md): Cessna 152 · Galveston, TX · Accident · No injuries · Data collection · Final report · Sep 9, 2005 · N68440 · Substantial damage
  > The pilot's improper in-flight planning and decisions, which resulted in fuel exhaustion. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB DEN05CA136](https://openairdocs.org/ntsb/DEN05CA136.md): Cessna T207A · Telluride, CO · Accident · Minor injuries · Data collection · Final report · Sep 9, 2005 · N207GR · Substantial damage
  > the pilot's improper in-flight planning/decision and failure to maintain aircraft control. Contributing factors were the pilot's failure to maintain airspeed which resulted in an inadvertent stall, and the rising terrain and encounter with downdrafts.
- [NTSB CHI05CA259](https://openairdocs.org/ntsb/CHI05CA259.md): Dixon RV-4 · Grafton, IL · Accident · Minor injuries · Data collection · Final report · Sep 9, 2005 · N9120Q · Substantial damage
  > The loss of engine power due to contamination of the fuel system, gascolator and carburetor inlet screen. A factor to the accident was the soybean crop.

Next page: https://openairdocs.org/ntsb-phases/400/cases.md?page=131

## 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=130

---
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.