- Date
- August 30, 1970
- Place
- Juneau, AK · JUNEAU, AK
- Injuries
- 6 uninjured
- Damage
- Minor damage
- Phase of flight
- Enroute
- Aircraft
- N4773CGrumman G-21A
- Status
- Completed · report February 11, 1971
- Report
- Brief approved by the director
- Case key
- 158797
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
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 ---------------------------------------------------------------------------------------------------------------------------- 4-0052 70/8/30 NR.JUNEAU,ALAS GRUMMAN G-21A CR- 0 0 1 SCHED DOM PASSG SRV CERTIFICATE UNKNOWN, AGE TIME - 1530 N4773C PX- 0 0 5 41, 13500 TOTAL HOURS, DAMAGE-MINOR OT- 0 0 0 800 IN TYPE, INSTRUMENT RATED. CLASSIFIED AS INCIDENT OPERATOR - ALASKA AIRLINES,INC. DEPARTURE POINT INTENDED DESTINATION KETCHIKAN,ALAS JUNEAU,ALAS TYPE OF ACCIDENT PHASE OF OPERATION PROPELLER/ROTOR FAILURE: PROPELLER IN FLIGHT: NORMAL CRUISE ENGINE FAILURE OR MALFUNCTION IN FLIGHT: NORMAL CRUISE PROBABLE CAUSE(S) POWERPLANT - PROPELLER AND ACCESSORIES: BLADES MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE MISCELLANEOUS ACTS,CONDITIONS - CORRODED/CORROSION MISCELLANEOUS ACTS,CONDITIONS - VIBRATION,EXCESSIVE MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE FACTOR(S) MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON WATER UNUSUAL NOISE PROP/ENGINE VIBRATION REMARKS- 3 FT OF LT PROP BLADE SEPARATED. CAUSED FURTHER DMG TO L ENG. MACHINE TOOL MARKS,CORROSION FOUND.
Aircraft
- Registration
- N4773C
- Reported as
- Grumman G-21A
- Category
- Airplane
- Engine
- turbo prop
- Damage
- Minor damage