NTSB Identification: NYC88DGM01.
The docket is stored on NTSB microfiche number 42155.
Accident occurred Thursday, August 04, 1988 in LOVELY, PA
Probable Cause Approval Date: 03/25/1991
Aircraft: HILLER UH-12E, registration: N5375V
Injuries: 1 Fatal,1 Serious.

THE PILOT AND THE OBSERVER/PASSENGER WERE PERFORMING AERIAL APPLICATION OPERATIONS ALONG A POWERLINE RIGHT-OF-WAY WHEN THE HELICOPTER EXPERIENCED A LOSS OF ENGINE POWER. THE PILOT STATED THAT HE ATTEMPTED TO TURN RIGHT AND CLIMB TO AVOID OBSTACLES, BUT THE ENGINE DID NOT PRODUCE FULL POWER WHEN HE ADDED FULL THORTTLE. THE HELICOPTER 'SETTLED AND CRASHED' IN AN AREA OF TALL TREES. POST-ACCIDENT INVESTIGATION INCLUDED AN ENGINE TEARDOWN, WHICH REVEALED EVIDENCE OF OVERHEATING DUE TO LACK OF LUBRICATION.

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

THE UNDETERMINED LOSS OF ENGINE POWER WHILE PERFORMING LOW LEVEL AERIAL APPLICATION OPERATIONS.

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