LAX90LA125

NTSB accident investigation · Cessna 150J · Livermore, CA · March 24, 1990

Accident · Serious injuriesLimited investigationFinal report
Date
March 23, 1990, 18:45 local (Mar 24, 1990, 02:45 UTC)
Place
Livermore, CA
Injuries
1 serious, 1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N60025Cessna 150J
Weather
Visual (VMC) · Dusk
Status
Completed · report September 15, 1992
Report
Approved by Office Director
FAA report
19900323005269A
Case key
26761

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 failure of the pilot to anticipate the carburetor icing conditions and to take the appropriate precautions.

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) - nonmechanicalCruise - normal
Single engine aircraft
Weather condition - carburetor icing conditionsCause
Carburetor heat - not usedPilot in commandCause
Forced landingDescent - emergency
Terrain condition - mountainous/hillyFactor
Light condition - duskFactor
In flight collision with objectDescent - emergency
Object - tree(s)
In flight collision with terrain/waterDescent - uncontrolled

Analysis

Both pilots indicated that while enroute they performed a series of chandelles and lazy eights. After the maneuvers were completed and the flight was again on course for modesto, the engine reportedly 'sputtered' suddenly, then quit completely. Engine power could not be restored and the aircraft collided with trees and terrain while attempting an emergency landing in a mountainous area at dusk. All fuel lines were found to be intact and properly secured to their respective component fittings. Approximately 16 gallons of fuel was found in the fuel tanks. The aircraft was examined by FAA airworthiness inspectors and no system or accessory abnormality was found. The closest official weather reporting station was reporting a temperature and dew point of 59 and 50 degrees respectively. The carburetor icing probability chart notes that the temperature and dew point fall into an area defined in the chart as 'serious icing --cruise or climb power'.

Aircraft

Registration
N60025
Reported as
Cessna 150J
Category
Airplane
Serial number
15070012
Airframe hours
6,345
Engine
Continental O-200-A, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Robert S. Bertron
Registered owner
Robert S Bertron
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · October 26, 1989 · 20 hours before
Departed
HWD · Hayward, CA
Destination
MOD · Modesto, CA

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
29
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,979 total · 74 in this make and model · 1,457 as pilot in command · 116 in the last 90 days · 9 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Dusk
Wind
270° at 6 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
59 °F, dew point 52 °F
Altimeter
30.00 inHg
Observed at
HWD, 18 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.