- Date
- July 17, 1973
- Place
- Juneau, AK · JUNEAU, AK
- Injuries
- 3 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N90470Hiller Acft UH12L4
- Status
- Completed · report November 21, 1973
- Report
- Brief approved by the director
- FAA report
- 19730717038859A
- Case key
- 188941
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 ---------------------------------------------------------------------------------------------------------------------------- 3-2982 73/7/17 NR.JUNEAU,ALAS HILLER ACFT UH12L4 CR- 0 0 1 COMMERCIAL COMMERCIAL, AGE 24, 2426 TIME - 1000 N90470 PX- 0 0 2 AIR TAXI-PASSG TOTAL HOURS, 840 IN TYPE, DAMAGE-SUBSTANTIAL OT- 0 0 0 NOT INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION JUNEAU,ALAS LOCAL TYPE OF ACCIDENT PHASE OF OPERATION PROPELLER/ROTOR FAILURE: MAIN ROTOR TAKEOFF: VERTICAL ROLL OVER LANDING: LEVEL OFF/TOUCHDOWN PROBABLE CAUSE(S) ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: OTHER MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE TERRAIN - ROUGH/UNEVEN EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND FIRE AFTER IMPACT REMARKS- TORSIONAL COUPLING HOUSING FAILED,ORIGIN UNDET.
Aircraft
- Registration
- N90470
- Reported as
- Hiller Acft UH12L4
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
N90470Registration cancelled Dec 15, 1976 · Hiller UH-12E4Airframe modelHiller UH-12E4Engine modelLycoming VO-540 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.