# NTSB SEA83LA110: Boeing Stearman A75N1, N56426, Turner, WA, May 27, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 27, 1983, 12:40 local (19:40 UTC)
- Place: Turner, WA
- Coordinates: 46.21989, -118.151 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=46.2199&lon=-118.1510&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): 39701
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA83LA110
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39701/pdf
- Page: https://openairdocs.org/ntsb/SEA83LA110

## 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,cylinder - failure,total (cause)
- Forced landing, landing - flare/touchdown
- Nose over, landing - roll
  - terrain condition - soft (contributing factor)

## Analysis

THE ACFT NOSED OVER DURING AN EMERGENCY LANDING AFTER AN ENGINE FAILURE. THE PILOT STATED THAT HE HAD ALMOST COMPLETED HIS SPRAYING, WHEN DURING A TURN-AROUND, THE ENGINE STARTED TO BACKFIRE. HE DUMPED THE REMAINING LOAD AND REDUCED POWER.THE ENGINE BACKFIRED AND QUIT. THE PILOT LANDED, AND DURING ROLL-OUT IN SOFT TERRAIN, THE ACFT NOSED OVER. THE PILOT STATED THAT THE #2 CYLINDER HAD SPLIT OPEN.

## Aircraft

- Registration: [N56426](https://openairdocs.org/aircraft/N56426), registered now, S/N 75-2322, built 1941 (OpenAirDocs)
- Reported make and model: Boeing Stearman A75N1
- Registry model: [Boeing A75N1(PT17)](https://openairdocs.org/model/boeing-a75n1-pt17) (registry code 1380134) (OpenAirDocs)
- Registry engine: [Continental W670-6N](https://openairdocs.org/engine/continental-w670-6n) (registry code 17318, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 75-2322
- Airframe hours: 7856
- Engines: P&W 985 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Inland Air Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, October 1, 1982, 64 hours before
- Departed: 2WA9, HUNTSVILLE, WA
- Destination: TURNER, WA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; commercial; airplane ratings: single-engine sea, single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: rear; flight hours: 10,000 total, 3,000 in this make and model, 10,000 as pilot in command, 200 in the last 90 days, 50 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 300° at 2 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 70 °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 19830527021759A](https://openairdocs.org/incident/19830527021759A), May 27, 1983: Boeing A75N1, Turner, WA, Substantial damage. Number 2 cylinder split during a spray run. Nosed over, landed in a plowed field.

## Other investigations on N56426 (2)

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 SEA93LA086](https://openairdocs.org/ntsb/SEA93LA086), Apr 1, 1993: Boeing D75N1 (N56426), Davenport, WA, substantial damage. Probable cause: UNSUITABLE TERRAIN WAS SELECTED FOR LANDING. A FACTOR TO THE ACCIDENT WAS: SOFT TERRAIN.
- [NTSB SEA75DYG29](https://openairdocs.org/ntsb/SEA75DYG29-201473), Apr 12, 1975: Boeing E75 (N56426), Dayton, WA, substantial damage

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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