- Date
- April 7, 1976
- Place
- Lancaster, CA · LANCASTER, CA
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N917BBell 47D-1
- Status
- Completed · report May 15, 1976
- Report
- Brief approved by the director
- FAA report
- 19760407008769A
- Case key
- 153911
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 ---------------------------------------------------------------------------------------------------------------------------- 3-1139 76/4/7 LANCASTER,CA BELL 47D-1 CR- 0 0 2 INSTRUCTIONAL COMMERCIAL, FL.INSTR., TIME - 1335 N917B PX- 0 0 0 DUAL AGE 31, 2644 TOTAL HOURS, DAMAGE-SUBSTANTIAL OT- 0 0 0 332 IN TYPE, NOT INSTRUMENT RATED. NAME OF AIRPORT - FOX FIELD DEPARTURE POINT INTENDED DESTINATION LANCASTER,CA LOCAL TYPE OF ACCIDENT PHASE OF OPERATION ROLL OVER LANDING: POWER-OFF AUTOROTATIVE LANDING PROBABLE CAUSE(S) DUAL STUDENT - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M. PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT FACTOR(S) WEATHER - UNFAVORABLE WIND CONDITIONS WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED WEATHER FORECAST - UNKNOWN/NOT REPORTED SKY CONDITION CEILING AT ACCIDENT SITE CLEAR UNLIMITED VISIBILITY AT ACCIDENT SITE PRECIPITATION AT ACCIDENT SITE 5 OR OVER(UNLIMITED) NONE OBSTRUCTIONS TO VISION AT ACCIDENT SITE RELATIVE BEARING OF WIND NONE RIGHT CROSS WIND 068-112 DEGREES TEMPERATURE-F WIND DIRECTION-DEGREES 71 220 WIND VELOCITY-KNOTS TYPE OF WEATHER CONDITIONS 19 VFR TYPE OF FLIGHT PLAN NONE REMARKS- PRACTICE AUTOROTATIONS FROM 4FT HOVER.
Aircraft
- Registration
- N917B
- Reported as
- Bell 47D-1
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
- Airport
- Fox Field
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 N917B · 3
Matched to the same aircraft by N-number and date.
NTSB LAX88LA160Accident · No injuriesLimited investigationFinal reportTaft, CANTSB LAX87LA294Accident · No injuriesLimited investigationFinal reportTaft, CAThe plt rprtd the eng lost power at about 300' AGL after the helicopter had flown aprx 2.7 hrs without refueling. He initiated an autorotative landing; however, before touchdown, the main rotor blades contacted & severed the tail boom. An exam revealed the…NTSB SEA65A0044Accident · No injuriesClosedRoseburg, OR