- Date
- April 6, 1972
- Place
- Pierre, SD · PIERRE, SD
- Injuries
- 1 minor, 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N7870SBell 47G-5
- Status
- Completed · report December 11, 1972
- Report
- Brief approved by the director
- Case key
- 165702
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
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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 ---------------------------------------------------------------------------------------------------------------------------- 3-0925 72/4/6 PIERRE,S DAK BELL 47G-5 CR- 0 0 1 NONCOMMERCIAL COMMERCIAL, FL.INSTR., TIME - 0930 N7870S PX- 0 0 1 BUSINESS AGE 42, 4378 TOTAL HOURS, DAMAGE-SUBSTANTIAL OT- 0 0 0 3378 IN TYPE, NOT INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION WESSINGTON,S DAK KEYSTONE,S DAK TYPE OF ACCIDENT PHASE OF OPERATION GEAR COLLAPSED LANDING: POWER-OFF AUTOROTATIVE LANDING PROBABLE CAUSE(S) PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION ROTORCRAFT - FLIGHT CONTROL SYSTEMS: CYCLIC PITCH CONTROL SYSTEM MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED MISCELLANEOUS ACTS,CONDITIONS - MISSING REMARKS- PIVOT BOLT P/N-AN-174-21,NUT P/N MS17825-4,WASHER P/N AN-960-416 MISSING.CYCLIC CONTROL LOST.
Aircraft
- Registration
- N7870S
- Reported as
- Bell 47G-5
- Category
- Helicopter
- Engine
- reciprocating
- 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.
Other investigations on N7870S · 1
Matched to the same aircraft by N-number and date.