LAX87LA046

NTSB accident investigation · Gulfstream AA-5B · Fullerton, CA · November 21, 1986

Accident · Serious injuriesLimited investigationFinal report
Date
November 21, 1986, 15:33 local (23:33 UTC)
Place
Fullerton, CA
Injuries
2 serious
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N4520DGulfstream AA-5B
Weather
Visual (VMC) · Day
Status
Completed · report March 10, 1988
Report
Approved by Office Director
FAA report
19861121060049A
Case key
25475

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

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) - nonmechanicalApproach - vfr pattern - final approach
Preflight planning/preparation - poorFlight instructor(on ground)Cause
Fuel system,strainer - contaminationFactor
Aircraft preflight - improperDual studentCause
Fuel system,tank - waterFactor
Flight manuals - not usedFlight instructor(on ground)Cause
Fuel system,strainer - waterFactor
Flight manuals - not usedDual studentCause
Supervision - inadequateFlight instructor(on ground)Cause
Forced landingDescent - emergency
In flight collision with objectLanding - flare/touchdown
Object - tree(s)

Analysis

A Gulfstream American AA-5B lost power and collided with a tree short of the runway while on an IFR training flight. The flight instructor had just switched fuel tanks when the engine began to run rough and then quit running. He was unable to restart the engine. The private pilot undergoing instrument training conducted the preflight inspection without the aid of the aircraft operators manual. He did not check the left and right wing fuel sump drains. Aircraft fuel samples were taken from the right and left wing tank fuel sumps and fuel line from the fuel pump to the carburetor. Labratory test results indicated the fuel sample taken from the fuel line from the fuel pump to the carburetor contained 12.6 % water by volume. The right fuel sump also contained traces of water. Examination of the refueling truck sample did not reveal any impurities.

Aircraft

Registration
N4520D
Reported as
Gulfstream AA-5B
Category
Airplane
Serial number
AA5B-1061
Airframe hours
1,693
Engine
Lycoming O-360-A4K, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Wings Express Aviation, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 1, 1986 · 15 hours before
Departed
LGB · Long Beach, CA
Destination
FUL · Fullerton, CA
Flight plan
IFR
Airport
FUL · Fullerton, runway 24, 3,121 × 75 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
23
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
1,398 total · 4 in this make and model · 1,258 as pilot in command · 278 in the last 90 days · 76 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 5 knots
Visibility
4 statute miles
Lowest ceiling
3,800 ft overcast
Altimeter
30.00 inHg
Observed at
FUL, 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.