- Date
- September 2, 1980
- Place
- Provo, UT · PROVO, UT
- Injuries
- 1 fatal, 3 serious, 1 minor
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N99478Bell UH-1B
- Status
- Completed · report April 13, 1981
- Report
- Brief approved by the director
- FAA report
- 19800902044299A
- Case key
- 127480
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
NTSB brief
NTSB’s brief of the accident, as it was printed: the coded facts, with the probable cause and factors.
---------------------------------------------------------------------------------------------------------------------------- FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA F S M/N PURPOSE ---------------------------------------------------------------------------------------------------------------------------- 3-3697 80/9/2 NR.PROVO,UT BELL UH-1B CR- 0 0 1 COMMERCIAL COMMERCIAL, AGE 32, 6150 TIME - 0930 N99478 PX- 1 3 0 CONSTRUCTION TOTAL HOURS, 1300 IN DAMAGE-SUBSTANTIAL OT- 0 0 0 TYPE, INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION BASE CAMP LANDING ZONE TYPE OF ACCIDENT PHASE OF OPERATION ENGINE FAILURE OR MALFUNCTION TAKEOFF: VERTICAL HARD LANDING TAKEOFF: ABORTED PROBABLE CAUSE(S) PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPERLY SERVICED AIRCRAFT (GROUND CREW) ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: TAIL ROTOR GEAR BOX MISCELLANEOUS ACTS,CONDITIONS - LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
Aircraft
- Registration
- N99478
- Reported as
- Bell UH-1B
- Category
- Helicopter
- Engine
- turbo shaft
- Damage
- Substantial damage
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.