- Date
- August 12, 1982, 14:40 local (19:40 UTC)
- Place
- Wisconsin Dells, WI
- Injuries
- 1 serious, 1 minor, 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N3748ZHiller UH12L4
- Weather
- Visual (VMC) · Day
- Status
- Completed · report August 12, 1983
- Report
- Approved by Office Director
- FAA report
- 19820812038149A
- Case key
- 73081
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
During climb, at about 200 ft AGL, the m/r lost RPM. During autorotation the eng RPM increased beyond the red line when the plt added power. The helicopter made a hard landing in a residential area. Inspection of the mercury clutch revealed that the exterior surface of the clutch drum exhibited evidence of excessive overheating. The inside surface of the drum showed severe glazing & discoloration in the clutch shoe wear area. There were also several cracks in the clutch drum. The housing bearing journal had experienced severe pitting. There was also severe wear in the bearing journal area. The clutch shoes showed significant glazing & surface cracking, & were severely worn.
Aircraft
- Registration
- N3748Z
- Reported as
- Hiller UH12L4
- Category
- Helicopter
- Serial number
- 2545
- Airframe hours
- 1,513
- Engine
- Lycoming VO-540-2CA, 250 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Part 91
- Operator
- Nelsonind, Inc.
- Registered owner
- Nelsonind, Inc.
- Departed
- Wisconsin Dells, WI
- Destination
- Wisconsin Dells, WI
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
- 25
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Flight hours
- 431 total · 354 in this make and model · 354 as pilot in command · 139 in the last 90 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 25 statute miles
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.