LAX94LA327

NTSB accident investigation · Aero Commander S2R · Firebaugh, CA · August 19, 1994

Accident · No injuriesLimited investigationFinal report
Date
August 18, 1994, 20:42 local (Aug 19, 1994, 03:42 UTC)
Place
Firebaugh, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N8843QAero Commander S2R
Weather
Visual (VMC) · Night/dark
Status
Completed · report January 25, 1995
Report
Approved by Office Director
FAA report
19940818022469A
Case key
28832

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 loss of engine power due to the failure of the number 2 cylinder head. A factor was the dark night conditions which inhibited the pilot's ability to visually detect ground obstructions in the landing area.

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 power(total) - mech failure/malfCruise
Engine assembly,cylinder - crackedCause
Forced landingDescent - emergency
Light condition - dark nightFactor
On ground/water collision with objectLanding - roll
Object - sign

Analysis

The pilot stated he was in cruise flight when the engine lost all power. He landed on the shoulder of a major interstate highway and the left wing collided with a highway signpost. Postaccident inspection of the aircraft revealed that the number 2 cylinder head was cracked.

Factual narrative

On August 18, 1994, at 2042 Pacific daylight time, an Aero Commander S2R airplane, N8843Q, collided with a highway signpost during a forced landing near Firebaugh, California. The forced landing was precipitated by a complete loss of power. The aircraft was owned and operated by Tri Air, Inc., of Firebaugh, California, and was engaged in an aerial application operation. Visual meteorological conditions prevailed at the time and no flight plan was filed. The aircraft incurred substantial damage to the left wing. The certificated commercial pilot, the sole occupant, was not injured. The flight originated from the Firebaugh airport on the evening of the accident at about 2030 hours as a local area aerial application flight.

The pilot stated he was in cruise flight when the engine lost all power. He landed on the shoulder of a major interstate highway and the left wing collided with a highway signpost. Postaccident inspection of the aircraft revealed that the number 2 cylinder head was cracked.

Aircraft

Registration
N8843Q
Reported as
Aero Commander S2R
Category
Airplane
Serial number
1543R
Airframe hours
10,700
Engine
P&W R-1340, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Tri Air, Inc.
Registered owner
Tri Air, Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · August 16, 1994 · 10 hours before
Departed
Q49
Destination
Q49

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
37
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
12,000 total · 6,000 in this make and model · 12,000 as pilot in command · 300 in the last 90 days · 100 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Visibility
30 statute miles
Lowest ceiling
None
Temperature
90 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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