NTSB Identification: LAX83LA411.
The docket is stored on NTSB microfiche number 22756.
Accident occurred Saturday, August 27, 1983 in UPLAND, CA
Aircraft: PIPER PA-28-161, registration: N47980
Injuries: 1 Serious,1 Minor,1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE PLT REPORTED THAT THE ACFT HAD AN ALTERNATOR FAILURE IN THE VICINITY OF CAJON PASS. HE REQUESTED & WAS PROVIDED RADAR VECTORS TOWARD THE RIALTO MUNI ARPT. HOWEVER, THE PLT SAW CABLE ARPT, APRX 14 MI WEST OF RIALTO, & THOUGHT IT WAS RIALTO MUNI. REPORTEDLY, THE PLT REDUCED HIS ELECTRICAL LOAD TO CONSERVE BATTERY POWER & HAD THE FRONT SEAT PASSENGER HOLD A FLASHLIGHT ON HIS INSTRUMENTS. DURING HIS APCH TO THE CABLE ARPT (WHICH HE THOUGHT WAS RIALTO MUNI), HE HEARD A CESSNA BROADCASTING THAT HE WAS ON FINAL AT RIALTO. WHEN THE PLT (OF N47980) COULD NOT SEE THE OTHER ACFT, HE DECIDED TO TURN ON THE ANTI-COLLISION LIGHT. HE REPORTED THAT THE FLASHLIGHT BEAM WAS REMOVED FROM HIS AIRSPEED INDICATOR AT A CRITICAL TIME ON FINAL APCH, CAUSING CONFUSION IN THE COCKPIT. SUBSEQUENTLY, THE ACFT WAS LANDED WITH EXCESSIVE AIRSPEED, OVERRAN THE RWY & EXPERIENCED AN ON-GROUND COLLISION WITH TERRAIN.

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

AIRSPEED..MISJUDGED..PILOT IN COMMAND

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

DIVERTED ATTENTION..PILOT IN COMMAND

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

DISTANCE..MISJUDGED..PILOT IN COMMAND


Contributing Factors

ELECTRICAL SYSTEM,ALTERNATOR..INOPERATIVE



Contributing Factors

LIGHT CONDITION..NIGHT



Contributing Factors

LANDED AT WRONG AIRPORT..INADVERTENT..PILOT IN COMMAND

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