# NTSB investigations: Lycoming TI0-540 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 MIA92WA060](https://openairdocs.org/ntsb/MIA92WA060.md): Piper PA-31-350 · Nagua, Dominican Republic · Accident · No injuries · Foreign investigation · Dec 28, 1991 · N225CH · Substantial damage
- [NTSB MIA92LA040](https://openairdocs.org/ntsb/MIA92LA040.md): Piper PA-32RT-300T · Daytona Beach, FL · Accident · No injuries · Limited investigation · Final report · Dec 8, 1991 · N22213 · Substantial damage
  > Total loss of engine power for undetermined reasons.
- [NTSB CHI92FA044](https://openairdocs.org/ntsb/CHI92FA044.md): Piper PA-32RT/300T · Camdenton, MO · Accident · 1 fatal · Field investigation · Final report · Dec 8, 1991 · N39555 · Destroyed
  > The pilot's disregard for wind conditions, not aborting the takeoff, and inadequate remedial action by the pilot after the airplane became airborne. Factors associated with the accident are an inadequate weather evaluation by the pilot, not maintaining…
- [NTSB CHI92LA026](https://openairdocs.org/ntsb/CHI92LA026.md): Piper PA-24-260 · Charles City, IA · Accident · No injuries · Limited investigation · Final report · Nov 12, 1991 · N9161P · Substantial damage
  > Proper glide path not maintained. Factors in the accident are the premature landing gear extension and inadequate airspeed by the pilot in command.
- [NTSB ATL92FA019](https://openairdocs.org/ntsb/ATL92FA019.md): Piper PA-32R-301T · Darden, TN · Accident · 1 fatal · Field investigation · Final report · Oct 29, 1991 · N3559J · Destroyed
  > The pilot's failure to maintain control of the airplane. The pilot exceeded the design limits of the airframe.
- [NTSB NYC92LA020](https://openairdocs.org/ntsb/NYC92LA020.md): Piper PA-23-250 · Groton, CT · Accident · Serious injuries · Limited investigation · Final report · Oct 27, 1991 · N14256 · Substantial damage
  > The pilot's failure to maintain the minimum descent altitude during the approach. A factor was pilot fatigue.
- [NTSB FTW92LA008](https://openairdocs.org/ntsb/FTW92LA008.md): Bellanca 17-31 · Big Spring, TX · Accident · Serious injuries · Limited investigation · Final report · Oct 14, 1991 · N9755E · Substantial damage
  > The complete loss of engine power due to a failed piston rod. A factor was the lack of suitable terrain for the forced landing.
- [NTSB ANC92IA001](https://openairdocs.org/ntsb/ANC92IA001.md): Piper PA-31-350 · Fairbanks, AK · Incident · No injuries · Incident investigation · Final report · Oct 2, 1991 · N200AK · Minor damage
  > Incorrect installation of crankshaft counterwweight rollers by the manufacturer during remanufacture of the engine. Factor was the inadequate surveillance of the engine assembly process by the manufacturer.
- [NTSB CHI91LA299](https://openairdocs.org/ntsb/CHI91LA299.md): Piper PA-23-250 · Boscobel, WI · Accident · No injuries · Limited investigation · Final report · Sep 20, 1991 · N915PM · Substantial damage
  > Improper remedial action by the pilot-in-command (PIC), and inadequate monitoring by the designated pilot examiner (DPE) during a simulated emergency procedure. Factors related to the accident were: the loss of power in one engine due to an undetermined…
- [NTSB NYC91LA232](https://openairdocs.org/ntsb/NYC91LA232.md): Piper PA46-350P · Dayton, OH · Accident · No injuries · Limited investigation · Final report · Sep 8, 1991 · N350MM · Substantial damage
  > A malfunction of the elevator trim indicator and incorrect position of the trim tab which resulted in the pilot aborting the takeoff and a loss of directional control on the ground.
- [NTSB BFO91FA078](https://openairdocs.org/ntsb/BFO91FA078.md): Piper PA-23-250 · Sod, WV · Accident · 1 fatal · Field investigation · Final report · Aug 31, 1991 · N5435Y · Destroyed
  > The improper level off which resulted in a hard landing. Contributing was fuel starvation resulting in partial loss of engine power.
- [NTSB ATL91LA160](https://openairdocs.org/ntsb/ATL91LA160.md): Piper PA-32-300D · Chamblee, GA · Accident · Serious injuries · Limited investigation · Final report · Aug 16, 1991 · N4164W · Substantial damage
  > The pilot's premature lift off when he failed to identify rotation airspeed and the subsequent inadvertent stall of the airplane.
- [NTSB LAX91LA343](https://openairdocs.org/ntsb/LAX91LA343.md): Piper PA-31-310 · Byron, CA · Accident · No injuries · Limited investigation · Final report · Aug 3, 1991 · N504DB · Substantial damage
  > The pilot's failure to refuel the airplane and his misjudging the distance to the runway.
- [NTSB NYC91LA185](https://openairdocs.org/ntsb/NYC91LA185.md): Piper PA-23-250 · Templeton, MA · Accident · No injuries · Limited investigation · Final report · Jul 22, 1991 · N54819 · Substantial damage
  > Fuel starvation induced power loss on first the left engine due to a failed fuel fitting and then the right engine due to a worn fuel fitting. A factor was the lack of suitable terrain for the forced landing.
- [NTSB LAX91LA315](https://openairdocs.org/ntsb/LAX91LA315.md): Piper PA32-300 · Corona, CA · Accident · 2 fatal · Limited investigation · Final report · Jul 17, 1991 · N5233S · Substantial damage
  > The pilot's failure to maintain an airspeed above the aircraft's stall speed after the engine failed. Factors contributing to the accident were: the failure of the engine, magneto and accessory drive gear, the rough terrain conditions over which the engine…
- [NTSB LAX91LA313](https://openairdocs.org/ntsb/LAX91LA313.md): Rockwell 500S · Kahului, HI · Accident · No injuries · Limited investigation · Final report · Jul 15, 1991 · N260AC · Substantial damage
  > The pilot's inadequate preflight inspection of the aircraft after refueling. The failure of the aircraft manufacturer to publish the refueling instructions in the operator's manual, the inadequate fuel servicing of the aircraft by other maintenance personnel…
- [NTSB CHI91LA218](https://openairdocs.org/ntsb/CHI91LA218.md): Piper PA-24-260 · Flint, MI · Accident · No injuries · Limited investigation · Final report · Jul 14, 1991 · N8803P · Substantial damage
  > Propeller pitch change mechanism sheared. Factors related to the accident were powerplant vibration and proper touchdown point not possible.
- [NTSB NYC91LA167](https://openairdocs.org/ntsb/NYC91LA167.md): Piper PA-32R-300 · Rhinebeck, NY · Accident · No injuries · Limited investigation · Final report · Jul 2, 1991 · N5002F · Substantial damage
  > The pilot did not calculated the airplane's performance data to insure that he had enough runway to clear an obstacle at the end of the field, which resulted in the airplane's landing gear striking high hedges, subsequently the pilot elected to land in a…
- [NTSB DEN91LA090](https://openairdocs.org/ntsb/DEN91LA090.md): Piper PA-32-300 · Englewood, CO · Accident · No injuries · Limited investigation · Final report · Jun 19, 1991 · N4064R · Substantial damage
  > The pilot's failure to maintain visual lookout. A factor was: the pilot's improper use of the throttle controls and brakes.
- [NTSB MIA91LA138](https://openairdocs.org/ntsb/MIA91LA138.md): Piper PA-32-300 · Clearwater, FL · Accident · Minor injuries · Limited investigation · Final report · May 9, 1991 · N55653 · Substantial damage
  > Inadequate annual inspection of the airplane by maintenance personnel who failed to detect a deteriorated oil line. This resulted in oil exhaustion causing the total loss of engine power due to failure of one of the connecting rods. Also inadvertent…
- [NTSB ANC91LA055](https://openairdocs.org/ntsb/ANC91LA055.md): Piper PA-32-300 · Eek, AK · Accident · No injuries · Limited investigation · Final report · May 3, 1991 · N4593T · Substantial damage
  > Was the hard landing caused when the pilot encountered a downdraft during the final approach portion of the landing. Contributing to the accident was the downdraft and the dirt/river bank just short of the runway.
- [NTSB DEN91FA065](https://openairdocs.org/ntsb/DEN91FA065.md): Piper PA-31B-310 · Bennett, CO · Accident · 1 fatal · Field investigation · Final report · May 1, 1991 · N7407L · Destroyed
  > In-flight separation of the left engine cowl assembly that was not properly latched, and failure of the pilot to maintain minimum control speed, which resulted in his loss of aircraft control. Factors related to the accident were: an inadequate preflight…
- [NTSB ANC91LA040](https://openairdocs.org/ntsb/ANC91LA040.md): Piper PA-32-300 · Kasigluk, AK · Accident · No injuries · Limited investigation · Final report · Mar 28, 1991 · N76RL · Substantial damage
  > The pilot's failure to maintain directional control of the airplane on landing. Contributing to the accident was the snowbank.
- [NTSB FTW91LA047](https://openairdocs.org/ntsb/FTW91LA047.md): Piper PA-32RT-300T · Leander, TX · Accident · No injuries · Limited investigation · Final report · Mar 5, 1991 · N9190A · Substantial damage
  > The pilot's failure to maintain a proper descent rate during the final approach.
- [NTSB ATL91FA052](https://openairdocs.org/ntsb/ATL91FA052.md): Piper PA-31-350 · Munford, AL · Accident · 4 fatal · Field investigation · Final report · Feb 7, 1991 · N27818 · Destroyed
  > The pilot attempting visual flight in instrument meteorological conditions below the minimum safe altitude for terrain clearance. Contributing factors were the low ceiling and mountainous terrain.
- [NTSB ATL91IA050](https://openairdocs.org/ntsb/ATL91IA050.md): Piper PA-60-600 · Cochran, GA · Incident · No injuries · Incident investigation · Final report · Feb 5, 1991 · N6070D · Minor damage
  > Failure of the right engine shutoff valve which resulted in a complete loss of engine power. The airplane veered off the right side of the runway and the right main landing gear collapsed as a result of the pilots failure to maintain directional control…
- [NTSB ATL91FA047](https://openairdocs.org/ntsb/ATL91FA047.md): Piper PA-24-260 · Cordele, GA · Accident · 3 fatal · Field investigation · Final report · Feb 3, 1991 · N9209P · Destroyed
  > Failure of the pilot to attain proper runway alignment and to maintain proper altitude. Related factors were: darkness and the pilot becoming lost/disoriented.
- [NTSB ATL91FA040](https://openairdocs.org/ntsb/ATL91FA040.md): Rockwell 114 · Bessemer, AL · Accident · 4 fatal · Field investigation · Final report · Jan 20, 1991 · N4827W · Destroyed
  > Failure of the pilot to follow instrument flight rules (IFR) and maintain the minimum descent altitude (mda) during the VOR approach. Factors related to the accident were: darkness and the adverse weather conditions.
- [NTSB MIA91LA070](https://openairdocs.org/ntsb/MIA91LA070.md): Piper PA-31-350 · Orlando, FL · Accident · No injuries · Limited investigation · Final report · Jan 19, 1991 · N27759 · Substantial damage
  > Failure of the pilot to follow proper procedures resulting in a gearup landing.
- [NTSB ANC91IA020](https://openairdocs.org/ntsb/ANC91IA020.md): Piper PA-31-350 · Nome, AK · Incident · No injuries · Incident investigation · Final report · Jan 15, 1991 · N4118G · Minor damage
  > Was the sheared fitting on the nose gear actuator shuttle valve which caused the nose gear to not extend for landing.

## 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 ('41533'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41533&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.