Great Falls - Dallas

The captain reported: 'Shortly after V1...there was a loss of power to the left engine....' (FAR Part 1 defines V1 as takeoff decision speed.) However, the first officer, who was the pilot flying, stated the captain retarded power on the left engine as a training exercise. The first officer stated there was no preflight discussion of emergency procedure practice. The airplane became airborne about 3,500 feet down the runway; the crew subsequently lost control of the aircraft, and it crashed to the left of the runway, and a fire erupted. The crew escaped with minor injuries. A teardown of the left engine was performed under FAA supervision at the engine manufacturer's facilities; the engine manufacturer reported that damage found during the teardown 'was indicative of engine rotation and operation at the time of impact....' Both airspeed indicator bugs were found set 9 to 11 knots below the V1 speed on the takeoff and landing data (TOLD) card. No evidence of an aircraft or engine malfunction, to include inflight fire, was found at the accident site.

Flight / Schedule

Great Falls - Dallas

Aircraft

Learjet 35

Registration

N1AH

MSN

35-398

Year of Manufacture

1981

Date

May 16, 1997 at 01:14 PM

Type

CRASH

Flight Type

Positioning

Flight Phase

Takeoff (climb)

Crash Site

Airport (less than 10 km from airport)

Crash Location

Great Falls Montana

Region

North America • United States of America

Coordinates

47.5049°, -111.2919°

Crash Cause

Human factor

Narrative Report

On May 16, 1997 at 01:14 PM, Great Falls - Dallas experienced a crash involving Learjet 35, operated by First Air Jet Charter, with the event recorded near Great Falls Montana.

The flight was categorized as positioning and the reported phase was takeoff (climb) at a airport (less than 10 km from airport) crash site.

2 people were known to be on board, 0 fatalities were recorded, 2 survivors were identified or estimated. This corresponds to an estimated fatality rate of 0.0%.

Crew on board: 2, crew fatalities: 0, passengers on board: 0, passenger fatalities: 0, other fatalities: 0.

The listed crash cause is human factor. The captain reported: 'Shortly after V1...there was a loss of power to the left engine....' (FAR Part 1 defines V1 as takeoff decision speed.) However, the first officer, who was the pilot flying, stated the captain retarded power on the left engine as a training exercise. The first officer stated there was no preflight discussion of emergency procedure practice. The airplane became airborne about 3,500 feet down the runway; the crew subsequently lost control of the aircraft, and it crashed to the left of the runway, and a fire erupted. The crew escaped with minor injuries. A teardown of the left engine was performed under FAA supervision at the engine manufacturer's facilities; the engine manufacturer reported that damage found during the teardown 'was indicative of engine rotation and operation at the time of impact....' Both airspeed indicator bugs were found set 9 to 11 knots below the V1 speed on the takeoff and landing data (TOLD) card. No evidence of an aircraft or engine malfunction, to include inflight fire, was found at the accident site.

Aircraft reference details include registration N1AH, MSN 35-398, year of manufacture 1981.

Geospatial coordinates for this crash are approximately 47.5049°, -111.2919°.

Fatalities

Total

0

Crew

0

Passengers

0

Other

0

Crash Summary

The captain reported: 'Shortly after V1...there was a loss of power to the left engine....' (FAR Part 1 defines V1 as takeoff decision speed.) However, the first officer, who was the pilot flying, stated the captain retarded power on the left engine as a training exercise. The first officer stated there was no preflight discussion of emergency procedure practice. The airplane became airborne about 3,500 feet down the runway; the crew subsequently lost control of the aircraft, and it crashed to the left of the runway, and a fire erupted. The crew escaped with minor injuries. A teardown of the left engine was performed under FAA supervision at the engine manufacturer's facilities; the engine manufacturer reported that damage found during the teardown 'was indicative of engine rotation and operation at the time of impact....' Both airspeed indicator bugs were found set 9 to 11 knots below the V1 speed on the takeoff and landing data (TOLD) card. No evidence of an aircraft or engine malfunction, to include inflight fire, was found at the accident site.

Cause: Human factor

Occupants & Outcome

Crew On Board

2

Passengers On Board

0

Estimated Survivors

2

Fatality Rate

0.0%

Known people on board: 2

Operational Details

Schedule / Flight

Great Falls - Dallas

Flight Type

Positioning

Flight Phase

Takeoff (climb)

Crash Site

Airport (less than 10 km from airport)

Region / Country

North America • United States of America

Aircraft Details

Aircraft

Learjet 35

Registration

N1AH

MSN

35-398

Year of Manufacture

1981