# NTSB ATL88FA040: Piper PA-24-250, N6450P, Lewisburg, KY, November 21, 1987

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Field investigation · Final report
- Date: November 21, 1987, 13:30 local (18:30 UTC)
- Place: Lewisburg, KY
- Coordinates: 36.979202, -86.950889 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.9792&lon=-86.9509&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report February 14, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 7565
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL88FA040
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/7565/pdf
- Page: https://openairdocs.org/ntsb/ATL88FA040

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, cruise
  - accessory drive assy,drive gear - disconnected (cause)
  - maintenance,overhaul,major - improper, other maintenance personnel (cause)
- Forced landing, descent - emergency
- Loss of control - in flight, descent - emergency
  - stall - not corrected, pilot in command (cause)
  - airspeed - not maintained, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE PILOT EXPERIENCED A LOSS OF ENGINE POWER AT 5500 FEET. HE WAS NOT ABLE TO START THE ENGINE AFTER COMPLETING AN EMERGENCY PROCEDURE. THE PILOT ESTABLISHED AN APPROACH TO A LANDING AREA, AND STALLED THE AIRCRAFT ON SHORT FINAL. THE AIRCRAFT MOVED ABOUT 30 FEET AFTER IMPACT. THERE WAS AMPLE ALTITUDE AVAILABLE FOR THE PILOT TO ESTABLISH AN APPROACH TO A LARGE OPEN FIELD. THE STALL RESULTED IN SUBSTANTIALLY MORE DAMAGE AND INJURIES. THE EVIDENCE INDICATED THE OVERHAUL FACILITY DID NOT PROPERLY SAFETY THE FOUR BOLTS WHICH ATTACH THE CAMSHAFT DRIVE GEAR IN THE ACCESSORY DRIVE SECTION OF THE ENGINE.

## Aircraft

- Registration: [N6450P](https://openairdocs.org/deregistered/N6450P-2013-04-29), registration cancelled 2013-04-29, S/N 24-1565, built 1959 (OpenAirDocs)
- Reported make and model: PIPER PA-24-250
- Registry model: [Piper PA-24-250](https://openairdocs.org/model/piper-pa-24-250) (registry code 7102404) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 241565
- Airframe hours: 4391
- Engines: LYCOMING O-540-A1C5 250 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Slater, Norman
- Registered owner: Norman Slater
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 18, 1987, 28 hours before
- Departed: OWB, OWENSBURG, KY
- Destination: MANCHESTER, TN

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; private; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 629 total, 302 in this make and model, 512 as pilot in command, 17 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Lowest ceiling: none

## 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 19871121081789A](https://openairdocs.org/incident/19871121081789A), Nov 21, 1987: Piper PA24250, Lewisburg, KY, Substantial damage. Engine quit. Pilot stalled aircraft maneuvering to land causing high impact. Unsecured cam shaft gear came loose.

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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