# NTSB FTW83FA261: Piper PA-25-235, N6551Z, Omega, OK, June 4, 1983

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: June 4, 1983, 11:30 local (16:30 UTC)
- Place: Omega, OK
- Coordinates: 35.860317, -98.189781 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.8603&lon=-98.1898&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 20732
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW83FA261
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/20732/pdf
- Page: https://openairdocs.org/ntsb/FTW83FA261

## Sequence of events

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

- In flight collision with terrain/water, maneuvering
  - maneuver - initiated, pilot in command
  - terrain condition - rising (contributing factor)
  - clearance - misjudged, pilot in command (cause)
  - diverted attention, pilot in command (cause)

## Analysis

THE PLT HAD JUST COMPLETED SPRAYING A FIELD & WAS IN A RIGHT TURN WHEN THE RIGHT WING TIP HIT GENTLY RISING TERRAIN. THE OWNER THOUGHT THAT THE PLT MIGHT HAVE DIVERTED HIS ATTENTION WHILE LOOKING AT A FARMER'S MAP TO LOCATE THE NEXT FIELD. (SEVERAL SIMILAR MAPS WERE FOUND IN THE SERVICE HANGER.) AN EXAM OF THE WRECKAGE & A TEARDOWN OF THE ENG REVEALED NO EVIDENCE OF A PREIMPACT/MECHANICAL MALFUNCTION OR FAILURE.

## Aircraft

- Registration: [N6551Z](https://openairdocs.org/deregistered/N6551Z-2013-04-30), registration cancelled 2013-04-30, S/N 25-2094, built 1962 (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: 25-2094
- Engines: LYCOMING O-540-B2B5 235 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Aerial application, Part 137
- Operator: Keith Hamilton
- Registered owner: Delmar R. Hannerman
- Airworthiness certificate: Standard, Utility
- Departed: LOYAL, OK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- 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 19830604022589A](https://openairdocs.org/incident/19830604022589A), Jun 4, 1983: Piper PA25235, Omega, OK, Destroyed. Caught a wing on the ground during a turn around from a spray run. Cartwheeled and burned.

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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