# NTSB investigations: Lycoming I0360 series, 1991

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.

## Latest cases

- [NTSB NYC92LA040](https://openairdocs.org/ntsb/NYC92LA040.md): Piper PA28R-200 · Piqua, OH · Accident · No injuries · Limited investigation · Final report · Dec 7, 1991 · N55786 · Substantial damage
  > The pilot allowed the airplane to get too low on short final and struck the terrain short of the runway. Factors in the accident were the proper glide path was not maintained, resulting in the intended touchdown point not being attained.
- [NTSB CHI92LA040](https://openairdocs.org/ntsb/CHI92LA040.md): Mooney M20J · Morris, MN · Accident · No injuries · Limited investigation · Final report · Dec 5, 1991 · N201QB · Substantial damage
  > Failure to maintain proper glidepath. A factor related to the accident is the failure to perform remedial action, the dark night, and the snow shower in progress at the time.
- [NTSB CHI92LA036](https://openairdocs.org/ntsb/CHI92LA036.md): Piper PA28R-200 · Lakeville, MN · Accident · Minor injuries · Limited investigation · Final report · Dec 1, 1991 · N2072T · 2 aircraft · Substantial damage
  > The failure of both pilots to maintain visual separation from each other. Contributing factors to this accident were an inadequate visual lookout by both pilots and the pilot-in-command's failure to follow procedures and directives.
- [NTSB BFO92LA008](https://openairdocs.org/ntsb/BFO92LA008.md): Mooney 20F · Basye, VA · Accident · No injuries · Limited investigation · Final report · Nov 6, 1991 · N9326V · Substantial damage
  > The pilot misjudged the altitude and distance to the runway. Factors were the gusty weather conditions and the pilot's delay in executing a go around.
- [NTSB MIA92LA016](https://openairdocs.org/ntsb/MIA92LA016.md): Piper PA-28-161 · Daytona Beach, FL · Accident · No injuries · Limited investigation · Final report · Oct 24, 1991 · N136AT · 2 aircraft · Substantial damage
  > The failure of the pilot in command of N136AT to maintain clearance from N3110R while diverting her attention to close her door during taxi to takeoff.
- [NTSB SEA92LA005](https://openairdocs.org/ntsb/SEA92LA005.md): Hughes 269B · Hillsboro, OR · Accident · No injuries · Limited investigation · Final report · Oct 12, 1991 · N9474F · Substantial damage
  > The failure to maintain rotor RPM. Factors include inadequate preflight planning, overconfidence in aircraft's ability, and non-suitable terrain.
- [NTSB CHI92LA004](https://openairdocs.org/ntsb/CHI92LA004.md): Beech 95 · Elkhart, IN · Accident · No injuries · Limited investigation · Final report · Oct 9, 1991 · N1309Z · Substantial damage
  > The inadequate amount of hydraulic fluid present in the normal brake system.
- [NTSB CHI91LA304](https://openairdocs.org/ntsb/CHI91LA304.md): Piper PA-28R-200 · Atchison, KS · Accident · No injuries · Limited investigation · Final report · Sep 17, 1991 · N4795T · Substantial damage
  > Delayed remedial action by the pilot in command. Factors related to the accident are a misjudged approach by the pilot in command, and complacency on the part of the FAA inspector.
- [NTSB CHI91LA287](https://openairdocs.org/ntsb/CHI91LA287.md): Beech A23 · Lake Elmo, MN · Accident · Minor injuries · Limited investigation · Final report · Sep 14, 1991 · N5786V · Substantial damage
  > A loss of engine power for undetermined reasons. A factor contributing to the accident was the unsuitable terrain on which the pilot had to land.
- [NTSB NYC91LA233](https://openairdocs.org/ntsb/NYC91LA233.md): Piper PA-34-200 · Easton, PA · Accident · Minor injuries · Limited investigation · Final report · Sep 10, 1991 · N55145 · Substantial damage
  > An overrun after the pilot-in-command landed long on a short, wet runway. A factor related to the accident was the failure of the pilot to make a go-around.
- [NTSB LAX91LA382](https://openairdocs.org/ntsb/LAX91LA382.md): Piper PA-28R-200 · Redwood City, CA · Accident · Serious injuries · Limited investigation · Final report · Sep 4, 1991 · N2080T · Substantial damage
  > The fatigue failure of the number two connecting rod and rod cap due to an engine overspeed condition which the rods and rod caps were exposed at some undetermined historical point.
- [NTSB CHI91LA281](https://openairdocs.org/ntsb/CHI91LA281.md): Piper PA-28R-180 · Newark, IL · Accident · No injuries · Limited investigation · Final report · Aug 30, 1991 · N3704T · Substantial damage
  > The pilot's poor inflight planning/decision making. A related factor was: the wet, slippery condition of the grass runway.
- [NTSB NYC91LA219](https://openairdocs.org/ntsb/NYC91LA219.md): Mooney M20F · Meadville, PA · Accident · Serious injuries · Limited investigation · Final report · Aug 24, 1991 · N3827N · Substantial damage
  > Engine failure resulting from the fatigue failure of the number 2 cylinder exhaust valve and the subsequent forced landing at night. A factor related to the accident was the restricted visibility.
- [NTSB SEA91LA217](https://openairdocs.org/ntsb/SEA91LA217.md): Beech B24R · Shady Cove, OR · Accident · Serious injuries · Limited investigation · Final report · Aug 21, 1991 · N2528W · Substantial damage
  > Improper re-installation of an oil line by maintenance personnel, which resulted in an oil leak from a loose line and subsequent seizure of the engine. Uneven terrain in the emergency landing area was a related factor.
- [NTSB LAX91LA314](https://openairdocs.org/ntsb/LAX91LA314.md): Piper PA28R-200 · So. Lake Tahoe, CA · Accident · No injuries · Limited investigation · Final report · Jul 15, 1991 · N646RL · Substantial damage
  > Engine failue due to the failure of the crankshaft resulting from failure induced by a non-metallic inclusion in the shaft.
- [NTSB SEA91LA155](https://openairdocs.org/ntsb/SEA91LA155.md): Piper PA-28R · Milford, UT · Accident · Serious injuries · Limited investigation · Final report · Jul 4, 1991 · N816CB · Substantial damage
  > Fuel exhaustion, and the pilot's misjudgment of proper descent rate. Factors include inadequate preflight planning, poor in-flight decision, becoming lost/disoriented, and a fence.
- [NTSB SEA91LA137](https://openairdocs.org/ntsb/SEA91LA137.md): Hughes 269B · Warrenton, OR · Accident · Minor injuries · Limited investigation · Final report · Jun 19, 1991 · N9380F · Substantial damage
  > The pilot failed to maintain proper rotor speed during a simulated autorotation.
- [NTSB SEA91LA130](https://openairdocs.org/ntsb/SEA91LA130.md): Hughes 269A-1 · Canby, OR · Accident · Minor injuries · Limited investigation · Final report · Jun 13, 1991 · N8944F · Substantial damage
  > A hard landing after an undetermined loss of power. Factors include an excessive emergency descent rate.
- [NTSB CHI91LA186](https://openairdocs.org/ntsb/CHI91LA186.md): Piper PA-28R-200 · Pulaski, WI · Accident · No injuries · Limited investigation · Final report · Jun 5, 1991 · N111CP · Substantial damage
  > The pilot's failure to select a proper touchdown point. A factor in the accident was inadequate runway maintenance by airport personnel.
- [NTSB CHI91LA179](https://openairdocs.org/ntsb/CHI91LA179.md): Lake LA-4-200 · Battle Creek, MI · Accident · No injuries · Limited investigation · Final report · Jun 1, 1991 · N2596P · Substantial damage
  > Aircraft control by the dual student was not maintained, remedial action by the CFI was delayed, which resulted in a stall/mush. A factor related to the accident was rough water caused by a power boat wake.
- [NTSB NYC91FA140](https://openairdocs.org/ntsb/NYC91FA140.md): Piper PA-28-151 · Shelburne, VT · Accident · 1 fatal · Field investigation · Final report · May 25, 1991 · N8433C · Destroyed
  > Premature lift-off by the pilot, which resulted in a subsequent stall/mush and collision with trees. Factors related to the accident were: the pilot's inadequate preflight planning/preparation, and the unfavorable wind condition.
- [NTSB SEA91LA104](https://openairdocs.org/ntsb/SEA91LA104.md): Hughes 269B · Grand Ronde, OR · Accident · No injuries · Limited investigation · Final report · May 14, 1991 · N9506F · Substantial damage
  > The pilot inadvertently interfered with the controls.
- [NTSB CHI91LA156](https://openairdocs.org/ntsb/CHI91LA156.md): Piper PA-28R-201 · Grand Forks, ND · Accident · No injuries · Limited investigation · Final report · May 14, 1991 · N804ND · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll. Related to the accident was the pilot's lack of total experience.
- [NTSB CHI91LA131](https://openairdocs.org/ntsb/CHI91LA131.md): Enstrom F-28A · Grand Ledge, MI · Accident · No injuries · Limited investigation · Final report · Apr 12, 1991 · N294Q · Substantial damage
  > The student's failure to maintain a proper altitude and clearance from the terrain along with the cfi's failure to adequately supervise the student's actions. A factor contributing to the accident was the inadequate visual lookout available due to the night…
- [NTSB MIA91LA112](https://openairdocs.org/ntsb/MIA91LA112.md): Piper PA-28R-200 · Sanford, FL · Accident · No injuries · Limited investigation · Final report · Mar 27, 1991 · N55516 · Substantial damage
  > Excessive flare by the dual student during the forced landing following a simulated engine failure shortly after takeoff. Also, failure of the student to maintain vs, and failure of the CFI to take remedial action.
- [NTSB FTW91LA041](https://openairdocs.org/ntsb/FTW91LA041.md): Hughes 269C · Knowles, OK · Accident · No injuries · Limited investigation · Final report · Feb 18, 1991 · N8973F · Substantial damage
  > The pilot's failure to maintain a proper descent rate during the maneuver and his delay in initiating the go-around.
- [NTSB CHI91LA085](https://openairdocs.org/ntsb/CHI91LA085.md): Mooney M2OE · Rush Hill, MO · Accident · No injuries · Limited investigation · Final report · Jan 27, 1991 · N1314W · Substantial damage
  > The pilot's failure to refuel the airplane. A factor related to the accident was unsuitable terrain.

## The whole list in SQL

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

```sql
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") = 1991
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41515'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41515&year=1991

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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.