# 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 270 of 718 · 35,885 cases

## Cases, newest first

- [NTSB ANC91LA012](https://openairdocs.org/ntsb/ANC91LA012.md): Cessna 170A · Healy, AK · Accident · No injuries · Limited investigation · Final report · Nov 7, 1990 · N5468C · Substantial damage
  > The loss of engine power for undetermined reasons and the lack of suitable terrain for a forced landing.
- [NTSB MIA91IA022](https://openairdocs.org/ntsb/MIA91IA022.md): Aerospatiale ATR-42-300 · San Juan, PR · Incident · No injuries · Incident investigation · Final report · Nov 6, 1990 · N972NA · No damage
  > The improper use of aileron trim and the improper preparation for auto pilot disconnect by the flight crew combined with excessive forces applied by the aileron trim system resulting in a departure from controlled flight. Contributing factors to the incident…
- [NTSB SEA91LA012](https://openairdocs.org/ntsb/SEA91LA012.md): Christen Industries A-1 · Afton, WY · Accident · No injuries · Limited investigation · Final report · Nov 4, 1990 · N9609G · Substantial damage
  > An improper maintenance modification to disable the carburetor heat control by unknown personnel.
- [NTSB NYC91LA023](https://openairdocs.org/ntsb/NYC91LA023.md): Cessna 182P · Elyria, OH · Accident · Minor injuries · Limited investigation · Final report · Nov 3, 1990 · N7409Q · Destroyed
  > The loss of engine power for an undetermined reason(s).
- [NTSB LAX91LA023](https://openairdocs.org/ntsb/LAX91LA023.md): Cessna 150G · Columbia, CA · Accident · No injuries · Limited investigation · Final report · Nov 3, 1990 · N4687X · Substantial damage
  > Poor planning which resulted in fuel exhaustion.
- [NTSB CHI91DEM01](https://openairdocs.org/ntsb/CHI91DEM01.md): Ercoupe 415C · Shelby, MI · Accident · 1 fatal · Final report · Nov 3, 1990 · N9409B · Destroyed
  > The pilot's continued flight into IMC.
- [NTSB BFO91LA009](https://openairdocs.org/ntsb/BFO91LA009.md): Cessna 172N · Elkton, VA · Accident · Minor injuries · Limited investigation · Final report · Nov 3, 1990 · N902ZZ · Substantial damage
  > The pilot's failure to use carburetor heat which resulted in a reduction in engine power. A factor was the rough terrain.
- [NTSB NYC91LA022](https://openairdocs.org/ntsb/NYC91LA022.md): Cessna 152 · Sherburne, NY · Accident · Serious injuries · Limited investigation · Final report · Nov 1, 1990 · N93003 · Substantial damage
  > The pilot failed to maintain adequate altitude to outclimb surrounding terrain.
- [NTSB ATL91FA013](https://openairdocs.org/ntsb/ATL91FA013.md): Bell 47J-2 · Gatlinburg, TN · Accident · Serious injuries · Field investigation · Final report · Nov 1, 1990 · N49DA · Destroyed
  > The accident was inadequate maintenance of the helicopter, allowing a tail rotor drive shaft bearing to exceed wear limits. This resulted in high loads on the tail rotor drive shaft, and the resulting fatigue failure of the drive shaft.
- [NTSB DEN91LA015](https://openairdocs.org/ntsb/DEN91LA015.md): Cessna 182C · Silver City, NM · Accident · No injuries · Limited investigation · Final report · Oct 31, 1990 · N8859T · Substantial damage
  > The pilot's improper planning which resulted in fuel starvation.
- [NTSB DEN91LA014](https://openairdocs.org/ntsb/DEN91LA014.md): Cessna T-210-M · Buena Vista, CO · Accident · Minor injuries · Limited investigation · Final report · Oct 29, 1990 · N621BD · Substantial damage
  > The pilot misjudged the fuel supply resulting in fuel exhaustion.
- [NTSB NYC91LA020](https://openairdocs.org/ntsb/NYC91LA020.md): Dassault-Breguet Falcon 50 · Parkersburg, WV · Accident · No injuries · Limited investigation · Final report · Oct 28, 1990 · N52DC · Substantial damage
  > Catastrophic failure of the left engine fan disc due to low cycle fatigue.
- [NTSB CHI91LA017](https://openairdocs.org/ntsb/CHI91LA017.md): Cessna 172 · Portage, WI · Accident · Minor injuries · Limited investigation · Final report · Oct 27, 1990 · N738AP · Substantial damage
  > The PIC became lost and disorientated and performed a premature precautionary landing.
- [NTSB FTW91FA010](https://openairdocs.org/ntsb/FTW91FA010.md): Piper PA-28R-200 · Kingsland, TX · Accident · 1 fatal · Field investigation · Final report · Oct 26, 1990 · N41586 · Destroyed
  > The pilot's failure to avoid flying into the mountain.
- [NTSB ATL91LA010](https://openairdocs.org/ntsb/ATL91LA010.md): Cessna A150K · Dublin, GA · Accident · No injuries · Limited investigation · Final report · Oct 26, 1990 · N8390M · Substantial damage
  > The pilot's inadequate preflight planning and preparation, in that he did not ensure that enough fuel was on board to complete the flight.
- [NTSB ATL91FA008](https://openairdocs.org/ntsb/ATL91FA008.md): Beech A36 · Georgetown, SC · Accident · 2 fatal · Field investigation · Final report · Oct 25, 1990 · N97PA · Destroyed
  > The pilot-in-command's loss of consciousness during flight. The reason for the loss of consciousness could not be determined.
- [NTSB LAX91GA016](https://openairdocs.org/ntsb/LAX91GA016.md): McDonnell Douglas 369E · Compton, CA · Accident · No injuries · Final report · Oct 24, 1990 · N451DS · 2 aircraft · Substantial damage
  > Inadequate visual lookout by the pilots of both aircraft, which resulted in a failure of each to see-and-avoid conflicting traffic. Factors related to the accident were: darkness, failure of the pilot of air 28 (N48HR) to use his transponder near the tca, and…
- [NTSB NYC91LA016](https://openairdocs.org/ntsb/NYC91LA016.md): Cessna 152 · West Nyack, NY · Accident · No injuries · Limited investigation · Final report · Oct 22, 1990 · N36944 · Substantial damage
  > The improper use of carburetor heat control, which resulted in a loss of engine power and subsequent emergency forced landing and collision with a fence. A factor to the accident was weather conditions suitable to formation of carburetor icing.
- [NTSB ATL91LA007](https://openairdocs.org/ntsb/ATL91LA007.md): Piper PA-24-250 · Savannah, GA · Accident · No injuries · Limited investigation · Final report · Oct 21, 1990 · N5506P · Substantial damage
  > Total failure of a connecting rod cap bolt which resulted in a total loss of power.
- [NTSB SEA91FA144](https://openairdocs.org/ntsb/SEA91FA144.md): Piper PA-28-180 · Mullan, ID · Accident · 1 fatal · Field investigation · Final report · Oct 14, 1990 · N4924L · Destroyed
  > The pilot's VFR flight into instrument meteorological conditions (IMC). The adverse weather and terrain conditions were related factors.
- [NTSB MIA91LA010](https://openairdocs.org/ntsb/MIA91LA010.md): American AA-5 · Cape Coral, FL · Accident · No injuries · Limited investigation · Final report · Oct 14, 1990 · N5825L · Substantial damage
  > A partial loss of engine power, caused by mechanical failure of the number 3 cylinder engine exhaust valve, for an undetermined reason.
- [NTSB MIA91LA009](https://openairdocs.org/ntsb/MIA91LA009.md): Cessna 177RG · De Funiak Spgs, FL · Accident · Minor injuries · Limited investigation · Final report · Oct 14, 1990 · N52838 · Substantial damage
  > The loose fuel cap and failure of the pilot to assure the aircraft was properly preflighted, which resulted in fuel siphoning and subsequent fuel exhaustion. Factors related to the accident were: faulty fuel quantity gages, the pilot's decision to fly with…
- [NTSB SEA91LA006](https://openairdocs.org/ntsb/SEA91LA006.md): Mooney M20F · Casper, WY · Accident · No injuries · Limited investigation · Final report · Oct 13, 1990 · N9732M · Substantial damage
  > The loss of engine power due to fatigue fracture of the number 2 cylinder connecting rod. Factors related to the accident were: rough and uneven terrain at the accident site and the lack of suitable terrain for forced landing.
- [NTSB LAX91LA009](https://openairdocs.org/ntsb/LAX91LA009.md): Piper PA-28-140 · Agua Dulce, CA · Accident · Serious injuries · Limited investigation · Final report · Oct 13, 1990 · N5809U · Substantial damage
  > A failure of the pilot to perform preflight planning.
- [NTSB NYC91LA010](https://openairdocs.org/ntsb/NYC91LA010.md): Swearingen SA-26AT · Monongahela, PA · Accident · No injuries · Limited investigation · Final report · Oct 12, 1990 · N690X · Substantial damage
  > The pilot's inadequate monitoring of the fuel burn which resulted in total fuel exhaustion. Factors which contributed to the accident were: the pilot's limited experience in the make and model of airplane, an erroneous fuel quantity indication, and the…
- [NTSB LAX91LA008](https://openairdocs.org/ntsb/LAX91LA008.md): Bell 47G4 · Merced, CA · Accident · Serious injuries · Limited investigation · Final report · Oct 11, 1990 · N477JM · Destroyed
  > Loss of engine power for an undetermined reason.
- [NTSB FTW91LA005](https://openairdocs.org/ntsb/FTW91LA005.md): Cessna T210L · Lake Providence, LA · Accident · No injuries · Limited investigation · Final report · Oct 9, 1990 · N4640Q · Substantial damage
  > The pilot's decision to enter an area of forecast thrunderstorms. The factor was the severe downdraft encountered.
- [NTSB FTW91LA003](https://openairdocs.org/ntsb/FTW91LA003.md): Cessna 172 · Claremore, OK · Accident · No injuries · Limited investigation · Final report · Oct 9, 1990 · N46174 · Substantial damage
  > Failure of pilot in command to insure the aircraft contained enough fuel for the flight resulting in engine failure due to fuel exhaustion.
- [NTSB MIA91FA008](https://openairdocs.org/ntsb/MIA91FA008.md): Mooney M20C · Kissimmee, FL · Accident · Serious injuries · Field investigation · Final report · Oct 7, 1990 · N1389W · Substantial damage
  > Malfunction of both magnetos due to deterioration of the coils, failure of maintenance personnel to comply with an airworthiness directive, and failure of the pilot to maintain adequate visual lookout while on an approach for an emergency landing. Factors…
- [NTSB FTW91FA002](https://openairdocs.org/ntsb/FTW91FA002.md): Enstrom F28-C · Mesquite, TX · Accident · 1 fatal · Field investigation · Final report · Oct 7, 1990 · N88RA · Destroyed
  > Installation error of company maintenance personnel. Factors were the unsuitable terrain, the tailwind, the inability of the pilot to maintain main rotor RPM, and the inadequate annual inspection by company maintenance personnel.
- [NTSB DEN91LA007](https://openairdocs.org/ntsb/DEN91LA007.md): Balloon Works AX9 · Cedar Crest, NM · Accident · Minor injuries · Limited investigation · Final report · Oct 7, 1990 · N90240 · Substantial damage
  > Pilot's delayed precautionary landing and the subseuqent fuel exhaustion. A factor was the encounter with high winds in flight.
- [NTSB BFO91LA013](https://openairdocs.org/ntsb/BFO91LA013.md): Cessna 421B · Morganfield, KY · Accident · No injuries · Limited investigation · Final report · Oct 7, 1990 · N69900 · Substantial damage
  > Lost of power of both engines due to the pilot's mismanagement of the fuel system.
- [NTSB DEN91LA003](https://openairdocs.org/ntsb/DEN91LA003.md): Raven S-55A · Bernalillo, NM · Accident · 2 fatal · Limited investigation · Final report · Oct 6, 1990 · N4062H · Destroyed
  > The pilot to maintain adequate visual lookout, resulting in an inflight collision with power lines.
- [NTSB NYC91LA003](https://openairdocs.org/ntsb/NYC91LA003.md): Cessna A150M · Lincoln, RI · Accident · No injuries · Limited investigation · Final report · Oct 5, 1990 · N7922U · Substantial damage
  > On ground collision with a tree while making a forced landing following loss of engine power due to a failed exhaust valve.
- [NTSB MIA91LA005](https://openairdocs.org/ntsb/MIA91LA005.md): Mcdonnell Douglas DC-9-31 · Cape Canaveral, FL · Accident · 1 fatal · Limited investigation · Final report · Oct 4, 1990 · N8923E · No damage
  > Failure of the captain to follow procedures, his improper in-flight planning/decision by allowing the aircraft to continue into the overhang (anvil) of a thunderstorm, failure of the passengers to abide by procedures/instructions concerning use of seat belts,…
- [NTSB LAX91DVW01](https://openairdocs.org/ntsb/LAX91DVW01.md): Melton MMI · Death Valley, CA · Accident · Serious injuries · Final report · Oct 4, 1990 · N3934 · Substantial damage
  > The pilot's inaccurate calculation of fuel consumption and his decision to continue the flight with a malfunctioning fuel quantity indicator.
- [NTSB CHI91LA003](https://openairdocs.org/ntsb/CHI91LA003.md): Cessna 172D · Midland, MI · Accident · Minor injuries · Limited investigation · Final report · Oct 4, 1990 · N2592Y · Substantial damage
  > The pilot did not refuel resulting in loss of engine power due to fuel exhaustion. The inadvertent stall encountered during the forced landing was also a cause.
- [NTSB SEA91IA003](https://openairdocs.org/ntsb/SEA91IA003.md): Cessna 551 · Elma, WA · Incident · No injuries · Incident investigation · Final report · Oct 3, 1990 · N226N · Minor damage
  > Inadequate inspection of the electrical wire bundle assembly by maintenance personnel, and chafing/burning of the wire bundle.
- [NTSB LAX91FA001](https://openairdocs.org/ntsb/LAX91FA001.md): Mooney M20K · Flagstaff, AZ · Accident · 1 fatal · Field investigation · Final report · Oct 3, 1990 · N231AX · Destroyed
  > The pilot's decision to operate the aircraft with a known discrepancy; inadequate maintenance procedures; and the pilot's inflight loss of control due to smoke and fumes in the cockpit.
- [NTSB DEN91FA002](https://openairdocs.org/ntsb/DEN91FA002.md): Cessna T210N · Gypsum, CO · Accident · 1 fatal · Field investigation · Final report · Oct 3, 1990 · N6477N · Destroyed
  > The pilot flying into known adverse icing and thunderstorm weather conditions which resulted in the loss of control of the aircraft.
- [NTSB CHI91LA002](https://openairdocs.org/ntsb/CHI91LA002.md): Gulfstream American 690B · Willow Springs, MO · Accident · No injuries · Limited investigation · Final report · Oct 3, 1990 · N691WM · Substantial damage
  > The airplanes encounter with a static discharge, turbulence and a downdraft in the clouds which were associated with severe meteorological conditions.
- [NTSB SEA91LA001](https://openairdocs.org/ntsb/SEA91LA001.md): Cessna T210K · Everett, WA · Accident · Serious injuries · Limited investigation · Final report · Oct 2, 1990 · N8281M · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB NYC91FA001](https://openairdocs.org/ntsb/NYC91FA001.md): Cessna 172P · Gorham, NH · Accident · 3 fatal · Field investigation · Final report · Oct 2, 1990 · N98438 · Destroyed
  > Improper planning/decision by the pilot, and his failure to maintain proper altitude while flying over mountainous terrain. Factors related to the accident were: darkness, mountainous terrain, and pilot fatigue.
- [NTSB ANC90LA189](https://openairdocs.org/ntsb/ANC90LA189.md): Maule M-4-210C · 60 E Of Bethel, AK · Accident · 1 fatal · Limited investigation · Final report · Oct 1, 1990 · N51441 · Destroyed
  > Continued VFR flight by the pilot into instrument meteorological conditions (IMC), and his failure to maintain altitude and clearance above mountainous terrain. Factors related to the accident were: darkness, adverse terrain and weather conditions, the…
- [NTSB FTW90LA187](https://openairdocs.org/ntsb/FTW90LA187.md): Ercoupe 415-C · Greers Ferry, AR · Accident · 1 fatal · Limited investigation · Final report · Sep 30, 1990 · N3673H · Destroyed
  > The pilot's decision to penetrate adverse weather and the resultant spatial disorientation. Factors were the weather conditions and the pilot's lack of instrument training/experience.
- [NTSB CHI90DEV10](https://openairdocs.org/ntsb/CHI90DEV10.md): Carlson Commander Elite · Jerseyville, IL · Accident · 1 fatal · Final report · Sep 30, 1990 · N60AC · Destroyed
  > The pilot's failure to maintain control of the gyroplane.
- [NTSB ATL90LA185](https://openairdocs.org/ntsb/ATL90LA185.md): Cessna 210 · White Plains, GA · Accident · No injuries · Limited investigation · Final report · Sep 30, 1990 · N6523X · Substantial damage
  > The fuel starvation to the engine for undertermined reasons.
- [NTSB LAX90LA340](https://openairdocs.org/ntsb/LAX90LA340.md): Balloon Works Firefly 9 · Vacaville, CA · Accident · Serious injuries · Limited investigation · Final report · Sep 29, 1990 · N90902 · No damage
  > The Balloon's encounter with a sudden increase in wind speed accompained by a strong down draft beyond the compensation capability of the Balloon.
- [NTSB FTW90DPA09](https://openairdocs.org/ntsb/FTW90DPA09.md): Moffitt, William A. Windryder · Mesquite, TX · Accident · Minor injuries · Final report · Sep 29, 1990 · N532BM · Substantial damage
  > The power loss due to failure of the ignition system due to improper installation by the operator. A factor was the wire struck during the emerency descent.
- [NTSB CHI90LA277](https://openairdocs.org/ntsb/CHI90LA277.md): Navion L-17A · Fort Wayne, IN · Accident · 1 fatal · Limited investigation · Final report · Sep 29, 1990 · N91665 · Destroyed
  > Poor judgement of the pilot due to impairment from consumption of alcohol and use of a drug, and his failure to maintain proper altitude/clearance above wooded terrain. Darkness was a related factor.

Next page: https://openairdocs.org/ntsb-phases/400/cases.md?page=271

## 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=270

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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.