# NTSB SEA92LA168: Boeing A75N1, N55625, Brigham City, UT, July 29, 1992

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: July 29, 1992, 06:00 local (12:00 UTC)
- Place: Brigham City, UT
- Coordinates: 41.509914, -112.040756 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.5099&lon=-112.0408&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report May 26, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 42865
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA92LA168
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/42865/pdf
- Page: https://openairdocs.org/ntsb/SEA92LA168

## Probable cause

A PARTIAL POWER LOSS FOR UNDETERMINED REASONS AND THE PILOT IN COMMAND'S INABILITY TO EXECUTE CORRECTIVE ACTION DURING THE NOSEOVER. A FACTOR CONTRIBUTING TO THE ACCIDENT WAS THE BERM.

## Sequence of events

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

- Loss of engine power, takeoff - initial climb
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - berm (contributing factor)

## Analysis

THE PILOT, EXPERIENCING A PARTIAL LOSS OF POWER AND DECAYING AIRSPEED, ABORTED THE TAKEOFF UNDER DAWN LIGHT CONDITIONS. HAVING PREVIOUSLY OBSERVED CONSTRUCTION EQUIPMENT AT THE AIRPORT ASSOCIATED WITH A RUNWAY EXTENSION PROJECT THE PILOT CHOSE TO TOUCH DOWN ALONGSIDE THE EAST OUTBOARD EDGE OF THE RUNWAY. THE PILOT REPORTED THAT THE NOSE HIGH ATTITUDE OF THE AIRCRAFT DURING LANDING OBSCURED FORWARD VISIBILITY. DURING THE LANDING ROLL THE AIRCRAFT STRUCK A BERM AND NOSED OVER. THERE WAS NO EVIDENCE OF A PRE EXISTING SAFETY AREA FOR THE RUNWAY ALTHOUGH ONE WAS PLANNED IN CONJUNCTION WITH THE RUNWAY EXTENSION PROJECT IN PROGRESS. THE CAUSE OF THE PARTIAL POWER LOSS WAS UNDETERMINED.

## Aircraft

- Registration: [N55625](https://openairdocs.org/aircraft/N55625), registered now, S/N 75-3453 (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: [Continental W670 series](https://openairdocs.org/engine/continental-w670-series) (registry code 17018, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 75-3453
- Airframe hours: 6034
- Engines: CONTINENTAL R-670-5 220 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Cross, Robert L.
- Registered owner: Cross, Robert L.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 22, 1992, 13 hours before
- Departed: BMC
- Destination: RKS, ROCK SPRINGS, WY
- Airport: BMC, Brigham City, runway 34, 5,500 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; flight engineer, commercial, airline transport; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: front; flight hours: 21,160 total, 107 in this make and model, 2,800 as pilot in command, 95 in the last 90 days, 15 in the last 30 days, 10 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dawn
- Wind: 100° at 8 knots
- Visibility: 30 statute miles
- Lowest ceiling: 12,000 ft broken
- Temperature: 72 °F, dew point 41 °F
- Altimeter: 30.00 inHg
- Observed at: HIF, 26 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 19920729027989A](https://openairdocs.org/incident/19920729027989A), Jul 29, 1992: Boeing A75N1, Brigham City, UT, Substantial damage. Reported power loss on takeoff. Aborted. Landed in a skid off end runway and struck a berm. Flipped 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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