DEN84LA083

NTSB accident investigation · Maule M-4S · Three Forks, MT · February 5, 1984

Accident · Minor injuriesLimited investigationFinal report
Date
February 5, 1984, 11:20 local (18:20 UTC)
Place
Three Forks, MT
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N9832MMaule M-4S
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19840205002149A
Case key
16331

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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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.

In flight collision with terrain/waterManeuvering
Ice/frost removal from aircraft - inadequatePilot in commandFactor
Airspeed(vs) - reducedFactor
In-flight planning/decision - improperPilot in commandCause
Proper altitude - not maintainedPilot in commandCause
Pull-up - attemptedPilot in command
Stall/mush - inadequatePilot in commandCause

Analysis

The plt was flying low toward rising terrain. The airspeed slowed to the point that the point that the acft mushed into the ground and cartwheeled. The plt said he had not removed all the frost on the wings prior to flt and he thought the stall speed was raised by the frost.

Aircraft

Registration
N9832M
Reported as
Maule M-4S
Category
Airplane
Serial number
2-S
Airframe hours
1,211
Engine
Continental O-300-A, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Alton G. Gaskill
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 15, 1983
Destination
5U3 · Ennis, 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
53
Certificate
Private
Airplane ratings
Single-engine sea, Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
715 total · 715 in this make and model · 3 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
60 statute miles
Lowest ceiling
None
Temperature
19 °F

FAA reports on this event · 1

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