Accident Hiller UH-12C N222TE,
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ASN Wikibase Occurrence # 359268
 
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Date:Tuesday 7 March 1995
Time:15:30 LT
Type:Silhouette image of generic UH12 model; specific model in this crash may look slightly different    
Hiller UH-12C
Owner/operator:Wilderness Helicopter, Inc.
Registration: N222TE
MSN: 802
Year of manufacture:1955
Engine model:FRANKLIN 6V-335-D
Fatalities:Fatalities: 0 / Occupants: 1
Aircraft damage: Substantial
Category:Accident
Location:Bonners Ferry, ID -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Training
Departure airport:, ID (65S)
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
THE PILOT REPORTED THAT DURING A STUDENT SOLO INSTRUCTIONAL FLIGHT, HE PERFORMED AN APPROACH TO A PINNACLE AND HELD A HOVER APPROXIMATELY THREE FEET ABOVE THE GROUND. THE PILOT THEN TRANSITIONED TO FORWARD FLIGHT AND STATED THAT THE ROTOR RPM BEGAN TO DECREASE. SUITABLE TERRAIN WAS NOT AVAILABLE, THEREFORE THE PILOT INITIATED A RIGHT 180 DEGREE TURN. DURING THE TURN, THE ROTOR RPM CONTINUED TO DECAY UNTIL TAIL ROTOR AUTHORITY WAS LOST. THE PILOT THEN SIDE SLIPPED THE HELICOPTER TO THE RIVER BANK, WHERE THE HELICOPTER LANDED HARD AND ROLLED ONTO ITS RIGHT SIDE. THE PILOT REPORTED THAT THERE WERE NO MECHANICAL FAILURES OR MALFUNCTIONS WITH THE HELICOPTER AT THE TIME OF THE ACCIDENT.

Probable Cause: ROTOR RPM WAS NOT MAINTAINED. FACTORS TO THE ACCIDENT WERE: INADEQUATE IN FLIGHT PLANNING/DECISION AND SUITABLE TERRAIN WAS NOT AVAILABLE.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: SEA95LA063
Status: Investigation completed
Duration: 6 months
Download report: Final report

Sources:

NTSB SEA95LA063

Location

Revision history:

Date/timeContributorUpdates
15-Mar-2024 08:48 ASN Update Bot Added

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