LAX85FA232

NTSB accident investigation · Aero Commander Callair A-9A · Fremont, CA · April 30, 1985

Accident · Serious injuriesField investigationFinal report
Date
April 30, 1985, 12:35 local (19:35 UTC)
Place
Fremont, CA
Injuries
1 serious
Damage
Destroyed
Phase of flight
Approach
Aircraft
N7713VAero Commander Callair A-9A
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Case key
24501

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.

Loss of control - in flightApproach - vfr pattern - final approach
Flight/nav instruments,airspeed indicator - false indicationCause
Stall - inadvertentPilot in commandCause
Diverted attentionPilot in commandFactor
In flight collision with terrain/waterDescent
Terrain condition - groundFactor
Airspeed - improperPilot in commandFactor
Stall - not identifiedPilot in commandCause
Remedial action - not performedPilot in commandCause
Diverted attentionPilot in commandFactor

Analysis

The purpose of the local flight was to tow a glider aloft to a launch point. The pilot said he had no memory of the accident flight. Witnesses saw the aircraft make a go around form short final as a pedestrian walked across the runway approach end, and then extend a non-standard left downwind pattern to allow space for a glider on a right downwind to land. After the acft turned final, the witnesses saw the aircraft suddenly 'pitch 60 to 75 degrees nose down' and almost regained a level flight attitude at ground impact 2,300 feet from the runway. Tests of the airspeed indicator revealed that it read 13 mph fast at the acft's power off stall speed.

Aircraft

Registration
N7713V
Reported as
Aero Commander Callair A-9A (CALLAIR A-)
Category
Airplane
Serial number
1465
Airframe hours
2,871
Engine
Lycoming O-540-B2B5, 235 horsepower, reciprocating
Damage
Destroyed
Flight
Other work use · Part 91
Registered owner
Bret Willat
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 25, 1985 · 13 hours before
Departed
8Q7 · Fremont, CA
Airport
8Q7 · Sky Sailing, runway 28, 1,840 × 30 ft, grass/turf

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
32
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
5,570 total · 500 in this make and model · 5,368 as pilot in command · 106 in the last 90 days · 17 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 5 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 54 °F
Altimeter
29.00 inHg
Observed at
SJC, 8 nm away