NTSB Identification: NYC88LA084.
The docket is stored on NTSB microfiche number 37729.
Accident occurred Saturday, October 17, 1987 in HAMMONDSPORT, NY
Probable Cause Approval Date: 07/03/1989
Aircraft: PIPER PA-12, registration: N7817H
Injuries: 3 Minor.

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

SHORTLY AFTER TAKEOFF, THE PIPER PA-12 EXPERIENCED A LOSS OF POWER AND MADE AN OFF AIRPORT LANDING. DURING THE LANDING, THE AIRCRAFT IMPACTED IN A CORN FIELD. EXAMINATION OF THE AIRCRAFT DID NOT DISCLOSE ANY MALFUNCTIONS OR MECHANICAL FAILURES. AUTO FUEL WAS BEING USED AT THE TIME OF THE ACCIDENT. AN FAA STUDY PREDICTS THAT VAPOR LOCK IS MOSTAPT TO OCCUR IN A HOT ENGINE, UNDER HIGH FUEL FLOWS, LOW COOLING AIR FLOW, AND WHEN THE REID VAPOR PRESSURE IS HIGHER THAN 7 PSI (AUTO FUEL IN WINTER IS TYPICALLY 15 PSI).

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

FLUID,FUEL..STARVATION

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

FLUID,FUEL GRADE..IMPROPER

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

FUEL SYSTEM..OVERTEMPERATURE


Contributing Factors

TERRAIN CONDITION..CROP


Contributing Factors

MAINTENANCE,SERVICE OF AIRCRAFT/EQUIPMENT..IMPROPER..UNKNOWN

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