- Date
- March 21, 1976
- Place
- Koyuk, AK · KOYUK, AK
- Injuries
- 1 serious, 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N6946MStinson 108-3
- Status
- Completed · report January 11, 1977
- Report
- Brief approved by the director
- FAA report
- 19760321009179A
- Case key
- 153594
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 ---------------------------------------------------------------------------------------------------------------------------- 3-3453 76/3/21 NR.KOYUK,AK STINSON 108-3 CR- 0 1 1 INSTRUCTIONAL COMMERCIAL, FL.INSTR., TIME - 0930 N6946M PX- 0 0 0 DUAL AGE 32, 1400 TOTAL HOURS, DAMAGE-SUBSTANTIAL OT- 0 0 0 1 IN TYPE, INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION GALENA,AK NOME,AK TYPE OF ACCIDENT PHASE OF OPERATION ENGINE FAILURE OR MALFUNCTION IN FLIGHT: NORMAL CRUISE NOSE OVER/DOWN LANDING: ROLL PROBABLE CAUSE(S) POWERPLANT - LUBRICATING SYSTEM: LINES,HOSES,FITTING MISCELLANEOUS ACTS,CONDITIONS - OIL EXHAUSTION-ENGINE LUBRICATION SYSTEM MISCELLANEOUS ACTS,CONDITIONS - OVERHEATED MISCELLANEOUS ACTS,CONDITIONS - PRESSURE,NONE TERRAIN - ROUGH/UNEVEN TERRAIN - SNOW-COVERED FACTOR(S) PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND REMARKS- HOSE BETWEEN OIL COOLER & PRESS REGULATOR VALVE RUPTURED.
Aircraft
- Registration
- N6946M
- Reported as
- Stinson 108-3
- Category
- Airplane
- Engine
- reciprocating
- Damage
- Substantial damage
N6946MRegistration cancelled Sep 3, 2014 · Stinson 108-3Airframe modelStinson 108-3Engine modelFranklin 6A4165 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 N6946M · 1
Matched to the same aircraft by N-number and date.