- Date
- October 4, 1990, 15:20 local (23:20 UTC)
- Place
- Kennsington, AK
- Injuries
- 1 serious, 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N1107GHughes 500D
- Weather
- Visual (VMC) · Day
- Status
- Completed · report November 23, 1992
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- FAA report
- 19901004044039A
- Case key
- 5473
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The loss of control during takeoff due to dynamic rollover. Contributing to the accident was the pilot-in-command's selection of an uneven landing area.
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
The pilot-in-command was unable to find a flat spot to set the helicopter on to pick up his passengers. He nosed the helicopter into the side of the mountain and maintained the aft portion of the skids at a hover. The passengers loaded themselves and were strapped in when the pilot began his takeoff. He applied power and the helicopter began settling aft. He continued to apply power and the helicopter rolled over onto its left side and turned 90 degrees to its left. The pilot did not recall hearing an engine-out warning and the circuit breaker was found in the out position. Examination of the helicopter and test run of the engine showed no reason for a loss of engine power or mechanical failure. The terrain was uneven and very rocky.
Aircraft
- Registration
- N1107G
- Reported as
- Hughes 500D
- Category
- Helicopter
- Serial number
- 210899D
- Airframe hours
- 4,266
- Engine
- Allison 250-C20-B, 420 horsepower, turbo shaft
- Damage
- Substantial damage
- Flight
- Part 135
- Registered owner
- Temsco Helicopters, Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Continuous airworthiness · September 5, 1990 · 45 hours before
- Flight plan
- Company VFR
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
- 32
- Certificate
- Commercial
- Instrument ratings
- Helicopter
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Right
- Flight hours
- 4,925 total · 1,850 in this make and model · 4,525 as pilot in command · 205 in the last 90 days · 35 in the last 30 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Visibility
- 60 statute miles
- Lowest ceiling
- None
- Temperature
- 37 °F, dew point -0 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.