SEA91LA163

NTSB accident investigation · Piper PA-25 · Musselshell, MT · July 13, 1991

Accident · Serious injuriesLimited investigationFinal report
Date
July 13, 1991, 09:17 local (15:17 UTC)
Place
Musselshell, MT
Injuries
1 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N9792PPiper PA-25
Weather
Visual (VMC) · Day
Status
Completed · report March 24, 1993
Report
Approved by Office Director
FAA report
19910713027379A
Case key
41475

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

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Probable cause

The pilot's intentional stall at low altitude.

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 control - in flightManeuvering
Stall - intentionalPilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - open field

Analysis

At the end of an aerial application flight, the pilot intentionally stalled the airplane to apply the brake to the wind driven chemical pump. When the airplane stalled, the brake was applied and at this moment, the nose of the airplane dropped to near vertical to the terrain. The pilot applied full power. However, the engine did not respond. The airplane then collided with the terrain in a nose down attitude.

Aircraft

Registration
N9792P
Reported as
Piper PA-25
Category
Airplane
Serial number
25-7556106
Engine
Lycoming O-540, 260 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Aerial application · Part 137
Operator
Moore Quality Flying Service
Registered owner
Moore Quality Flying Service
Departed
Musselshell, MT

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
46
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Flight hours
9,286 total · 800 in this make and model · 8,995 as pilot in command · 330 in the last 90 days · 150 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
50 statute miles
Lowest ceiling
None
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.

Other investigations on N9792P · 1

Matched to the same aircraft by N-number and date.