- Date
- December 13, 1976
- Place
- Cowdrey, CO · COWDREY, CO
- Injuries
- 1 serious, 2 minor
- Damage
- Substantial damage
- Phase of flight
- Uncontrolled descent
- Aircraft
- N6965RSikorsky S-64E
- Status
- Completed · report May 19, 1977
- Report
- Brief approved by the director
- FAA report
- 19761213042389A
- Case key
- 149705
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 ---------------------------------------------------------------------------------------------------------------------------- 3-4084 76/12/13 NR.COWDREY,CO SIKORSKY S-64E CR- 0 1 2 COMMERCIAL COMMERCIAL, AGE 35, 4584 TIME - 0945 N6965R PX- 0 0 0 CONSTRUCTION TOTAL HOURS, 2077 IN DAMAGE-SUBSTANTIAL OT- 0 0 0 TYPE, NOT INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION COWDREY,CO LOCAL TYPE OF ACCIDENT PHASE OF OPERATION COLLISION WITH GROUND/WATER: UNCONTROLLED IN FLIGHT: UNCONTROLLED DESCENT PROBABLE CAUSE(S) PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION SYSTEMS - FLIGHT CONTROL SYSTEMS: FLIGHT CONTROL BOOST SYSTEMS, HYDRAULIC MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED SYSTEMS - HYDRAULIC SYSTEM: RESERVOIR,LINES,FITTINGS MISCELLANEOUS ACTS,CONDITIONS - LEAK/LEAKAGE MISCELLANEOUS ACTS,CONDITIONS - LOOSE,PART/FITTING EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND REMARKS- PRESSURE AND RETURN HYD LINES TO LEFT LATERAL SERVO REVERSED HYD LEAK DEVELOPED IN FLIGHT
Aircraft
- Registration
- N6965R
- Reported as
- Sikorsky S-64E
- Category
- Helicopter
- Engine
- turbo shaft
- Damage
- Substantial damage
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.