NTSB Identification: LAX87FA135.
The docket is stored on NTSB microfiche number 36555.
Accident occurred Thursday, March 05, 1987 in TUCSON, AZ
Probable Cause Approval Date: 02/06/1989
Aircraft: GRUMMAN AMERICAN AA-5A, registration: N9917U
Injuries: 3 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

A WITNESS OBSERVED THE AIRPLANE ENTERING DOWNWIND WITH SMOKE TRAILING BEHIND IT. THE PILOT COMMUNICATED TO UNICOM THAT: 'THE ENGINE HAS QUIT; I HAVE TO GET DOWN'. THE WITNESS THEN OBSERVED THE AIRPLANE MAKING A TIGHTER-THAN- NORMAL 'BASE TO FINAL' TURN. THE AIRPLANE NOSED DOWN AND SPUN TO THE GROUND. AN EXAMINATION OF THE AIRFRAME REVEALED NO MECHANICAL PROBLEMS. THE POWERPLANT WAS REMOVED TO A TESTING FACILITY. TEARDOWN OF THE ENGINE, ACCESSORIES, AND CARBURETOR REVEALED NO MALFUNCTIONS. THE CARBURETOR, PRIOR TO TEARDOWN, WAS INSTALLED ON A SIMILAR ENGINE AND WAS SATISFACTORILY RUN IN A TEST CELL. THE ACCIDENT OCCURRED IN FLAT TERRAIN.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AIRSPEED..NOT MAINTAINED..DUAL STUDENT

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

REMEDIAL ACTION..NOT PERFORMED..PILOT IN COMMAND(CFI)


Contributing Factors

ENGINE ASSEMBLY..UNDETERMINED

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