Air Tractor AT-301 N3660U

Summary

On 24 July 1995 at about 23:15 local time, a Air Tractor AT-301 registered N3660U was involved in an accident near Havre, Montana, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

24 July 1995 at 23:15

Classification

Accident

Location

Havre, Montana, United States

Coordinates

48.5597, -109.7297

Aircraft

Air Tractor AT-301

Registration

N3660U

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 137: Agricultural

Purpose of flight

Aerial Application

Phase of flight

Not recorded

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

SEA95LA161

Nobody was injured.

the loss of power due to a failure of the cylinder head exhaust valve rocker box. The tall crop encountered during the forced landing is a factor.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

During an aerial application flight, the aircraft experienced a complete loss of engine power. Almost immediately after the loss of power, one of the aircraft's wings caught in the tall barley the pilot was spraying. After catching the wing, the aircraft cartwheeled and came to rest in an inverted position. Examination of the engine revealed that a rocker box had sustained a fatigue fracture at the point where the rocker pivot bolt passes through the box.

Quoted verbatim from the NTSB record.