- Date
- September 12, 1979
- Place
- Ardmore, OK · ARDMORE, OK
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N3575Bell 47D1
- Status
- Completed · report December 27, 1979
- Report
- Brief approved by the director
- FAA report
- 19790912031439A
- Case key
- 134947
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 ---------------------------------------------------------------------------------------------------------------------------- 3-2950 79/9/12 ARDMORE,OK BELL 47D1 CR- 0 0 2 INSTRUCTIONAL COMMERCIAL, FL.INSTR., TIME - 1150 N3575 PX- 0 0 0 DUAL AGE 32, 6497 TOTAL HOURS, DAMAGE-SUBSTANTIAL OT- 0 0 0 1000 IN TYPE, NOT INSTRUMENT RATED. NAME OF AIRPORT - DOWNTOWN ARDMORE DEPARTURE POINT INTENDED DESTINATION ARDMORE,OK LOCAL TYPE OF ACCIDENT PHASE OF OPERATION HARD LANDING LANDING: POWER-OFF AUTOROTATIVE LANDING PROBABLE CAUSE(S) PILOT IN COMMAND - MISJUDGED SPEED AND ALTITUDE FACTOR(S) MISCELLANEOUS ACTS,CONDITIONS - SIMULATED CONDITIONS REMARKS- DEMONSTRATING LOW LVL AUTOROTATIVE LNDG.
Aircraft
- Registration
- N3575
- Reported as
- Bell 47D1
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
- Airport
- Downtown Ardmore
N3575Registration cancelled Mar 6, 2021 · Bell 47D1Airframe modelBell 47D1Engine modelFranklin 6V-335 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 N3575 · 3
Matched to the same aircraft by N-number and date.
NTSB FTW91LA126Accident · No injuriesLimited investigationFinal reportProvencal, LAFuel leakage from the fuel drain valve. A factor was the inaccessibility of suitable terrain for fored landing.NTSB FTW87LA107Accident · No injuriesLimited investigationFinal reportArdmore, OKThe pilot reportedly heard an unusual noise in the engine and made a precautionary autorotation to landing. Touchdown was on uneven terrain and in a nose low attitude. This resulted in the tail rotor assembly being chopped off the tail boom by the main rotor…NTSB MIA77DKG08Accident · No injuriesClosedVanceville, GA