# NTSB SEA93LA112: Boeing A75N1, N9041R, Hardin, MT, May 19, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 19, 1993, 12:30 local (18:30 UTC)
- Place: Hardin, MT
- Coordinates: 45.699672, -107.689628 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.6997&lon=-107.6896&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 19, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 43025
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA93LA112
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/43025/pdf
- Page: https://openairdocs.org/ntsb/SEA93LA112

## Probable cause

THE PILOT IN COMMAND'S FAILURE TO MAINTAIN DIRECTIONAL CONTROL.

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - directional control - not maintained, pilot in command (cause)
- Nose over, landing - roll

## Analysis

DURING THE LANDING ROLL THE AIRCRAFT BEGAN DRIFTING RIGHT AND THE PILOT CORRECTED BY APPLYING LEFT RUDDER AND BRAKE. A LOSS OF DIRECTIONAL CONTROL FOLLOWED AND THE AIRCRAFT THEN DEPARTED THE RUNWAY AND NOSED OVER.

## Aircraft

- Registration: [N9041R](https://openairdocs.org/aircraft/N9041R), registered now, S/N 75-4659, built 1943 (OpenAirDocs)
- Reported make and model: BOEING A75N1
- Registry model: [Boeing A75N1(PT17)](https://openairdocs.org/model/boeing-a75n1-pt17) (registry code 1380134) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 75-4659
- Airframe hours: 2960
- Engines: P&W R985-AN-1 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Ferry, Part 91
- Operator: Carver, Donald J.
- Registered owner: Quinn, Louis F.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, July 3, 1992, 55 hours before
- Departed: BYG, BUFFALO, WY
- Destination: MT02, MT
- Airport: MT02, Fairgrounds Airpark, runway 4, 3,542 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 48; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: front; flight hours: 1,221 total, 7 in this make and model, 25 in the last 90 days, 15 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 40° at 6 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 64 °F, dew point 34 °F
- Altimeter: 30.00 inHg
- Observed at: BIL, 39 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 19930519014589A](https://openairdocs.org/incident/19930519014589A), May 19, 1993: Boeing A75N1, Hardin, MT, Substantial damage. Veered and skidded on landing roll with brake locked. Hit soft spot and nosed over.

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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