Gulfstream AA-5B N4520D

Summary

On 21 November 1986 at about 23:33 local time, a Gulfstream AA-5B registered N4520D was involved in an accident near Fullerton, California, United States. 2 people were on board and 2 were seriously injured. The aircraft was substantially damaged. No probable cause statement is available for this record.

Date

21 November 1986 at 23:33

Classification

Accident

Location

Fullerton, California, United States

Nearest airport

Fullerton (FUL)

Coordinates

Not recorded

Aircraft

Gulfstream AA-5B

Registration

N4520D

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Instructional

Phase of flight

Not recorded

Route

Long Beach → Fullerton

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

LAX87LA046

2 people were seriously injured.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

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.

Quoted verbatim from the NTSB record.