- Date
- July 17, 1976
- Place
- Petersburg, AK · PETERSBURG, AK
- Injuries
- 2 fatal
- Damage
- Destroyed
- Phase of flight
- Enroute
- Aircraft
- N7901SBell 47G3B1
- Status
- Completed · report March 1, 1977
- Report
- Brief approved by the director
- Case key
- 155102
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 ---------------------------------------------------------------------------------------------------------------------------- 3-3890 76/7/17 PETERSBURG,AK BELL 47G3B1 CR- 1 0 0 NONCOMMERCIAL COMMERCIAL, AGE 29, 3700 TIME - UNK/NR N7901S PX- 1 0 0 PLEASURE/PERSONAL TRANSP TOTAL HOURS, 600 IN TYPE, DAMAGE-DESTROYED OT- 0 0 0 NOT INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION BIG JOHN BAY,AK PETERSBURG,AK TYPE OF ACCIDENT PHASE OF OPERATION PROPELLER/ROTOR FAILURE: TAIL ROTOR IN FLIGHT: OTHER PROBABLE CAUSE(S) PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION ROTORCRAFT - ROTOR ASSEMBLIES: TAIL ROTOR BLADES MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE FACTOR(S) MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT FIRE AFTER IMPACT REMARKS- T/R BLADES 22.1HRS PAST MANDATORY CHANGE TIME.
Aircraft
- Registration
- N7901S
- Reported as
- Bell 47G3B1
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Destroyed
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.
Other investigations on N7901S · 3
Matched to the same aircraft by N-number and date.
NTSB FTW98TA099Accident · No injuriesFinal reportMagdalena, NMThe pilot's failure to maintain adequate main rotor rpm. A factor was a lack of recent experience in the type of operation being performed.NTSB LAX80DUK06Accident · No injuriesClosedSeligam, AZNTSB OAK71DVA40Accident · No injuriesClosedGrant Cove, CA