- Date
- April 14, 1990, 09:30 local (17:30 UTC)
- Place
- Drift River, AK
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N1086ZBell 206B
- Weather
- Visual (VMC) · Day
- Status
- Completed · report March 5, 1993
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- FAA report
- 19900414008799A
- Case key
- 5352
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 pilot failed to maintain control of the helicopter during lift-off.
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.
Loss of control - on ground/water
Aircraft control - not maintainedCause
Roll over
Analysis
The pilot was checking the water depth in a River. Just after lift-off from a area with a mild current, the helicopter rolled over on to its right side. It was substantially damaged and the pilot and passenger were not injured.
Aircraft
- Registration
- N1086Z
- Reported as
- Bell 206B
- Category
- Helicopter
- Serial number
- 2989
- Airframe hours
- 5,230
- Engine
- Allison 250-C20, 420 horsepower, turbo shaft
- Damage
- Substantial damage
- Flight
- Part 135
- Registered owner
- Alaska Helicopter, Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · March 19, 1990 · 22 hours before
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 33
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Helicopter, Airplane
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Right
- Flight hours
- 4,896 total · 1,719 in this make and model · 4,724 as pilot in command · 69 in the last 90 days · 23 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 90 statute miles
- Lowest ceiling
- None
- Temperature
- 39 °F, dew point 25 °F
- Altimeter
- 30.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.