LAX94LA280

NTSB accident investigation · Cessna 150G · Tucson, AZ · July 11, 1994

Accident · Minor injuriesLimited investigationFinal report
Date
July 11, 1994, 07:48 local (14:48 UTC)
Place
Tucson, AZ
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N3003SCessna 150G
Weather
Visual (VMC) · Day
Status
Completed · report January 12, 1995
Report
Approved by Office Director
FAA report
19940711018179A
Case key
28794

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 engine power loss from fuel exhaustion due to the pilot's inaccurate fuel consumption calculations.

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) - nonmechanicalClimb
Fuel system - exhaustionFactor
Fuel consumption calculations - inaccuratePilot in commandCause
Forced landingDescent - emergency
In flight collision with terrain/waterLanding

Analysis

The student pilot departed with about 8 gallons of usable fuel to do a series of touch-and-go landings for an hour in the airport traffic area. After the eighth landing and during the climb out, the engine quit and he made a forced landing in an open field. The right wing fuel tank was found empty and the left wing tank was damaged with a small amount of fuel remaining. There was no evidence of fuel leakage.

Factual narrative

On July 11, 1994, at 0748 hours mountain standard time, a Cessna 150G, N3003S, collided with the terrain after making a forced landing in a vacant field off the departure end of runway 6R at Ryan Field, Tucson, Arizona. The student pilot experienced a loss of engine power after takeoff from a series of eight touch-and-go landings. The aircraft was operated by Windwalker Aviation of Tucson. The airplane sustained substantial damage and the pilot received minor injuries. Visual meteorological conditions prevailed and no flight plan was filed for the local instructional flight.

According to Federal Aviation Administration inspectors and the operator, the right fuel tank was found empty and the left fuel tank had about 10 gallons of fuel in it at the time of takeoff. The student pilot did not fuel the aircraft before the flight. He estimated he had about 8 gallons of fuel for a 1 hour flight at 6 gallons per hour. The flight lasted about .9 hours and was conducted in the traffic pattern.

A mechanic at the airfield reported that the right fuel tank was empty and the left fuel tank was extensively damaged and had a small amount of fuel remaining. He was not able to obtain an accurate measurement of the fuel remaining. He also reported there was no evidence of fuel leakage.

Aircraft

Registration
N3003S
Reported as
Cessna 150G
Category
Airplane
Serial number
15066903
Airframe hours
8,985
Engine
Continental O-200-A, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Windwalker Aviation
Registered owner
Michael E. Butterfield
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 14, 1994 · 20 hours before
Airport
RYN · Ryan, runway 6L, 4,900 × 75 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
46
Certificate
Student
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
46 total · 46 in this make and model · 12 as pilot in command · 46 in the last 90 days · 35 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
60° at 5 knots, gusting 10
Visibility
40 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 54 °F
Altimeter
30.00 inHg
Observed at
TU

FAA reports on this event · 1

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