# NTSB ATL83LA346: Piper PA-25-235, N4633Y, Falkland, NC, August 29, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 29, 1983, 18:00 local (22:00 UTC)
- Place: Falkland, NC
- Coordinates: 35.700241, -77.510299 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.7002&lon=-77.5103&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 6184
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL83LA346
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6184/pdf
- Page: https://openairdocs.org/ntsb/ATL83LA346

## 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, maneuvering - aerial application
  - engine assembly,bearing - failure,total (cause)
- Forced landing, landing - flare/touchdown
- On ground/water collision with object, landing - roll
  - object - tree(s) (contributing factor)

## Analysis

THE PLT REPORTED THAT DURING A PULL-UP FROM A SWATH RUN, THE ACFT BEGAN TO SHAKE & LOSE POWER. HE CONTINUED TO CLIMB WITH FULL THROTTLE & WAS ABLE TO MAINTAIN ALTITUDE FOR A SHORT TIME, THEN THE ENG HAD A TOTAL POWER LOSS. REPORTEDLY, THE ACFT COLLIDED WITH TREES DURING A FORCED LANDING. AN EXAM OF THE ENG REVEALED THAT THE #2 EXHAUST VALVE, PN 75068, HAD FAILED. THE ENG HAD 1474 HRS OF FLT TIME SINCE IT WAS OVERHAULED.

## Aircraft

- Registration: [N4633Y](https://openairdocs.org/deregistered/N4633Y-2015-04-30), registration cancelled 2015-04-30, S/N 25-4352, built 1967 (OpenAirDocs)
- Reported make and model: PIPER PA-25-235
- Registry model: [Piper PA-25-235](https://openairdocs.org/model/piper-pa-25-235) (registry code 7102504) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 25-4352
- Airframe hours: 3000
- Engines: LYCOMING O-540-B2B5 235 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Craft Spraying, Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, July 1, 1983
- Departed: FARMVILLE, NC
- Destination: FALKLAND, NC

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 1,528 total, 452 in this make and model, 1,431 as pilot in command, 252 in the last 90 days, 9 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 3 statute miles
- Lowest ceiling: none
- Temperature: 90 °F

## 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 19830829045109A](https://openairdocs.org/incident/19830829045109A), Aug 29, 1983: Piper PA25235, Falkland, NC, Substantial damage. Engine quit during spraying operation and crash occurred during emergency landing.

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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