- Date
- August 31, 1983, 16:45 local (21:45 UTC)
- Place
- Corwith, IA
- Injuries
- 1 minor
- Damage
- Destroyed
- Phase of flight
- Enroute
- Aircraft
- N173HAHiller UH-12E
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19830831045439A
- Case key
- 33480
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
While en route, the plt heard a clanking noise behind him which was followed by a severe vibration of the flt controls. He initiated an autorotative descent from 3000 ft. he said the helicopter began to roll left, then righted itself. The helicopter touched down with a forward speed of about 50 mph, then rolled & was destroyed. An investigation revealed that the control rotor cuff, pn 36124-3, had failed from fatigue.
Aircraft
- Registration
- N173HA
- Reported as
- Hiller UH-12E
- Category
- Helicopter
- Serial number
- HA-3073
- Airframe hours
- 1,410
- Engine
- Lycoming VO-540-B1A, 305 horsepower, reciprocating
- Damage
- Destroyed
- Flight
- Ferry · Part 91
- Operator
- Benson Flying Service
- Registered owner
- Warren A. Jackson
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · May 9, 1983 · 300 hours before
- Departed
- 1D5 · Garner, IA
- Destination
- Fonda, IA
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.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 36
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Helicopter
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 5,623 total · 1,800 in this make and model · 5,471 as pilot in command · 391 in the last 90 days · 8 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 70° at 8 knots
- Visibility
- 15 statute miles
- Lowest ceiling
- None
- Temperature
- 90 °F
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 N173HA · 1
Matched to the same aircraft by N-number and date.