# NTSB SEA91LA102: Boeing A-75, N53280, Seattle, WA, May 11, 1991

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: May 11, 1991, 14:55 local (21:55 UTC)
- Place: Seattle, WA
- Coordinates: 47.539287, -122.309654 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.5393&lon=-122.3097&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed, report February 8, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 41426
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA91LA102
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41426/pdf
- Page: https://openairdocs.org/ntsb/SEA91LA102

## Probable cause

THE PILOT DID NOT MAINTAIN DIRECTIONAL CONTROL DURING THE LANDING ROLL. THE FACTOR TO THE ACCIDENT WAS:  THE PILOT'S REMEDIAL ACTION WAS INADEQUATE.

## 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)
  - remedial action - inadequate, pilot in command (contributing factor)
- Nose over, landing - roll

## Analysis

AT THE END OF A PLEASURE FLT, THE PILOT REPORTED THAT TOUCH-DOWN WAS NORMAL.  DURING THE LANDING ROLL, THE AIRPLANE BEGAN TO VEER TO THE RIGHT. THE PILOT CORRECTED WITH LIGHT LEFT RUDDER AND AILERON CONTROL, HOWEVER, THE AIRPLANE CONTINUED TO THE LEFT.  THE PILOT THEN APPLIED FULL RUDDER AND AILERON DEFLECTION CONTROL AND LIGHTLY TOUCHED THE BRAKE, HOWEVER, THE AIRPLANE TRAVELED OFF THE RUNWAY AND NOSED OVER.  THE PILOT REPORTED THAT THERE WERE NO MECHANICAL FAILURES OR MALFUNCTIONS WITH THE AIRPLANE AT THE TIME OF THE ACCIDENT.

## Aircraft

- Registration: [N53280](https://openairdocs.org/aircraft/N53280), registered now, S/N 75-261, built 1941 (OpenAirDocs)
- Reported make and model: BOEING A-75
- Registry model: [Boeing A75](https://openairdocs.org/model/boeing-a75) (registry code 1380108) (OpenAirDocs)
- Registry engine: [Continental W670 series](https://openairdocs.org/engine/continental-w670-series) (registry code 17018, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 75-261
- Engines: CONTINENTAL W670-N 220 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Thomas H. O'Leary
- Registered owner: Thomas H. O'Leary
- Airport: BFI, Boeing Fld, runway 13, 3,710 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 57; private; airplane ratings: single-engine land, single-engine sea; medical: class 3, valid medical--w/ waivers/lim; flight hours: 1,992 total, 74 in this make and model, 6 in the last 90 days, 2 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 8 knots
- Visibility: 7 statute miles
- Lowest ceiling: 18,000 ft broken
- Temperature: -0 °F, dew point -0 °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 19910511015229A](https://openairdocs.org/incident/19910511015229A), May 11, 1991: Boeing A75, Seattle, WA, Substantial damage. Veered off runway and nosed over on downwind landing.

## Other investigations on N53280 (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 FTW77DRJ11](https://openairdocs.org/ntsb/FTW77DRJ11), Jun 28, 1977: Boeing A75 (N53280), Marksville, LA, substantial damage
- [NTSB MIA75DKJ07](https://openairdocs.org/ntsb/MIA75DKJ07), Aug 1, 1974: Boeing A75 (N53280), Marion, AL, 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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