SEA91LA079

NTSB accident investigation · Grumman American AA-1C · Wenatchee, WA · April 6, 1991

Accident · No injuriesLimited investigationFinal report
Date
April 6, 1991, 07:15 local (15:15 UTC)
Place
Wenatchee, WA
Injuries
1 uninjured
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N9651UGrumman American AA-1C
Weather
Visual (VMC) · Day
Status
Completed · report March 24, 1993
Report
Approved by Office Director
FAA report
19910406009009A
Case key
41407

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

Carburetor ice as a result of the pilot's improper use of carburetor heat.

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 powerClimb - to cruise
Weather condition - carburetor icing conditionsFactor
Carburetor heat - improper use ofPilot in commandCause
Fuel system,carburetor - iceCause
Forced landingDescent - emergency
In flight collision with objectDescent - emergency
Nose overLanding

Analysis

Shortly after take off during the climb to cruise, the engine lost patrial power and the RPM dropped. The pilot went through the emergency procedures without success in regaining full power. An emergency descent to landing was initiated in mountainous terrain. The icing probability chart indicated that the airplane was operating near the range of serious icing at cruise, climb, or glide power settings.

Aircraft

Registration
N9651U
Reported as
Grumman American AA-1C
Category
Airplane
Serial number
AA1C-0088
Engine
Lycoming O-235-L2C, 118 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
James Q. Baxter
Registered owner
James Q. Baxter
Departed
EAT · Wenatchee, WA
Destination
MFR · Medford, OR

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
45
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Flight hours
401 total · 257 in this make and model · 296 as pilot in command · 29 in the last 90 days · 6 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 4 knots
Visibility
30 statute miles
Lowest ceiling
15,000 ft broken
Temperature
36 °F, dew point 25 °F
Altimeter
29.00 inHg
Observed at
EAT, 8 nm away

FAA reports on this event · 1

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