LAX92LA008

NTSB accident investigation · Grumman AA-5A · Flagstaff, AZ · October 5, 1991

Accident · Minor injuriesLimited investigationFinal report
Date
October 5, 1991, 16:17 local (23:17 UTC)
Place
Flagstaff, AZ
Injuries
1 minor
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N9694UGrumman AA-5A
Weather
Visual (VMC) · Day
Status
Completed · report May 26, 1993
Report
Approved by Office Director
FAA report
19911005045069A
Case key
27471

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

An inadvertent stall/mush due to the pilot's failure to maintain the appropriate airspeed during the takeoff attempt. Factors in the accident were the high density altitude and the inadequate preflight planning by the pilot.

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 flightTakeoff - initial climb
Weather condition - high density altitudeFactor
Preflight planning/preparation - poorPilot in commandFactor
Airspeed(vref) - not maintainedPilot in commandCause
Stall/mush - inadvertentPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The density altitude at the time of the accident was calculated to be in excess of 9,800 feet. Numerous ground witnesses at the airport reported that the aircraft rotated in a nose high attitude, climbed to about 30 feet above runway 21 and flew along its 7,000 foot length without gaining any additional altitude. The aircraft was observed to descend in the same relative nose high attitude into the ground about 100 yards beyond the departure end of the runway. A post crash fire started after the impact sequence and consumed the aircraft. All of the witnesses reported hearing strong engine sounds during the accident sequence from the takeoff to ground impact.

Aircraft

Registration
N9694U
Reported as
Grumman AA-5A
Category
Airplane
Serial number
AA5A-0060
Engine
Lycoming O-320, 150 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Operator
Madison L. Myers
Registered owner
Gary L. Keck
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 20, 1991 · 4 hours before
Destination
P52 · Cottonwood, AZ
Airport
FLG · Pullman, runway 21, 6,999 × 150 ft, asphalt

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
59
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,532 total · 79 in this make and model · 1,430 as pilot in command · 28 in the last 90 days · 9 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 12 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 12 °F
Altimeter
30.00 inHg
Observed at
FLG, 1 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.