# NTSB NYC91LA232: Piper PA46-350P, N350MM, Dayton, OH, September 8, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 8, 1991, 09:30 local (13:30 UTC)
- Place: Dayton, OH
- Coordinates: 39.779846, -84.24044 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.7798&lon=-84.2404&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed, report May 3, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 37008
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC91LA232
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/37008/pdf
- Page: https://openairdocs.org/ntsb/NYC91LA232

## Probable cause

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.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Airframe/component/system failure/malfunction, takeoff - initial climb
  - flt control syst,elevator trim indicator - binding(mechanical) (cause)
  - flt control syst,elevator trim indicator - disconnected (cause)
- Loss of control - on ground/water, landing - flare/touchdown
  - directional control - not possible, pilot in command (contributing factor)
- On ground/water collision with object, landing - flare/touchdown
  - object - airport facility (contributing factor)

## Analysis

DURING THE TAKEOFF ROLL THE NOSE OF THE AIRPLANE CAME OFF THE GROUND PREMATURELY.  THE PILOT TRIED TO CORRECT BY ELECTRICALLY APPLYING NOSE DOWN TRIM, BUT DID NOT GET ANY RESPONSE.  THE AIRPLANE CLIMBED ABOUT 50 FEET OFF THE GROUND AND THE PILOT COULD NOT LOWER THE NOSE.  THE PILOT ELECTED TO ABORT THE TAKEOFF THE AIRPLANE LANDED HARD ON THE RUNWAY, VEER TO THE RIGHT, DEPARTED THE RUNWAY AND STRUCK 3 TAXIWAY LIGHTS AND A TAXIWAY SIGN.  EXAMINATION OF THE AIRPLANE'S ELECTRIC ELEVATOR TRIM INDICATOR REVEALED THAT THE INDICATOR HAD MALFUNCTIONED BECAUSE A GUIDE/LODGING PIN WAS BINDING, WHICH RESULTED IN THE INDICATOR DISCONNECTING FROM THE TRACK.  THE INDICATOR WAS READING FULL NOSE DOWN, AT THE SAME TIME THE ELEVATOR TRIM TAB WAS IN THE FULL NOSE UP POSITION.

## Aircraft

- Registration: [N350MM](https://openairdocs.org/deregistered/N350MM-2014-11-25), registration cancelled 2014-11-25, S/N 4622105, built 1990 (OpenAirDocs)
- Reported make and model: PIPER PA46-350P
- Registry model: [Piper PA 46-350P](https://openairdocs.org/model/piper-pa-46-350p) (registry code 7104620) (OpenAirDocs)
- Registry engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 4622105
- Airframe hours: 162
- Engines: LYCOMING TIO-540-AE2A 350 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Arthur F. Lindquist
- Registered owner: Arthur F. Lindquist
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, August 15, 1991, 162 hours before
- Destination: OJC, OLATHE, KS
- Flight plan: IFR
- Airport: DAY, Dayton International, runway 24, 7,000 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 69; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 11,250 total, 162 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 140° at 5 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 73 °F, dew point 54 °F
- Altimeter: 30.00 inHg
- Observed at: DAY, 1 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19910908045519A](https://openairdocs.org/incident/19910908045519A), Sep 8, 1991: Piper PA46350P, Dayton, OH, Substantial damage. Nosed up on takeoff. Used full down trim no change. Aborted. Found trim indicator inoperative. Manual trim was normal

## Other investigations on N350MM (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CEN11LA097](https://openairdocs.org/ntsb/CEN11LA097), Dec 4, 2010: Piper PA 46-350P (N350MM), Gulf of Mexico, substantial damage. Probable cause: A total loss of engine power for undetermined reasons.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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