- Date
- October 1, 1981
- Place
- Big Lake, AK · BIG LAKE, AK
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N51727Enstrom F-28C
- Status
- Completed · report October 19, 1981
- Report
- Brief approved by the director
- FAA report
- 19811001064619A
- Case key
- 123696
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 ---------------------------------------------------------------------------------------------------------------------------- 3-1859 81/10/1 NR.BIG LAKE,AK ENSTROM F-28C CR- 0 0 1 NONCOMMERCIAL COMMERCIAL, AGE 29, 2049 TIME - 0940 N51727 PX- 0 0 0 OTHER TOTAL HOURS, 540 IN TYPE, DAMAGE-SUBSTANTIAL OT- 0 0 0 INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION FLAT LAKE,AK LOCAL TYPE OF ACCIDENT PHASE OF OPERATION PROPELLER/ROTOR FAILURE: MAIN ROTOR IN FLIGHT: HOVERING HARD LANDING LANDING: POWER-OFF AUTOROTATIVE LANDING PROBABLE CAUSE(S) ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: SPRAG SYSTEM MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND REMARKS- NONCOMMERCIAL SLING LOADING LUMBER.SPRAG CLUTCH,PN CL-40526-7,FAILED.
Aircraft
- Registration
- N51727
- Reported as
- Enstrom F-28C
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
N51727Registration cancelled Jan 9, 2018 · Enstrom F-28CAirframe modelEnstrom F-28CEngine modelLycoming HIO-360 series
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.
Other investigations on N51727 · 2
Matched to the same aircraft by N-number and date.
NTSB WPR12LA111Accident · No injuriesLimited investigationFinal reportKalispell, MTA total loss of engine power for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.NTSB SEA77DYK20Accident · No injuriesClosedMedford, WA