FTW87DRD13

NTSB accident investigation · Air Tractor AT-400A · Monroe, LA · August 19, 1987

Accident · No injuriesFinal report
Date
August 19, 1987, 08:21 local (13:21 UTC)
Place
Monroe, LA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N3159CAir Tractor AT-400A
Weather
Visual (VMC) · Day
Status
Completed · report August 31, 1988
Report
Approved by Office Director
FAA report
19870819045939A
Case key
22207

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine power(total) - mech failure/malfManeuvering - aerial application
Compressor assembly,blade - failure,totalCause
Forced landingDescent - emergency
Hard landingLanding - flare/touchdown
Airspeed(vs) - not maintainedPilot in commandFactor

Analysis

The ag pilot pulled up from a swath run while spraying chemicals on cotton and the pt 6A-20A engine in his aircraft exploded. A post accident teardown of the engine revealed the blades of a compressor disk had failed causing a total loss of power. Reason for failure of the blades was not determined. The cotton field was located on the property of the regional airport at Monroe, LA, however, the airplane was not in a position to reach a runway for landing and airspeed was not maintained. This resulted in a hard landing.

Aircraft

Registration
N3159C
Reported as
Air Tractor AT-400A
Category
Airplane
Serial number
400A-0463
Airframe hours
2,700
Engine
P&W PT6A-20A, 550 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Brooks Flying Serv. Inc.
Airworthiness certificate
Special, Restricted (Special)
Departed
5F7 · Monroe, LA
Airport
MLU · Monroe Reg.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
42
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Flight hours
6,500 total · 3,000 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
7 statute miles
Temperature
73 °F, dew point 73 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.