- Date
- November 26, 1990, 07:30 local (15:30 UTC)
- Place
- Mulina, OR
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N1106ZHughes 369D
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 28, 1992
- Report
- Approved by Office Director
- FAA report
- 19901126051969A
- Case key
- 41367
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
In-flight collision with a rebounding long-line, which caused main-rotor RPM decay and tail-boom separation, compromising the pilot's ability to successfully accomplish an attempted autorotation.
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 Hughes 369D helicopter crashed while conducting christmas tree external-load operations when a choker attached to a long- line external hook snagged on an unidentified object and snapped the remote hook into the main rotor system. According to the pilot, a power-on autorotation was attempted, but due to low rotor RPM, the main blades chopped off the tail boom.
Aircraft
- Registration
- N1106Z
- Reported as
- Hughes 369D
- Category
- Helicopter
- Serial number
- 210900D
- Engine
- Allison 250-C20, 420 horsepower, turbo shaft
- Damage
- Substantial damage
- Flight
- Other work use · Part 133
- Operator
- Temesco Helicopters Inc
- Registered owner
- Unknown
- Departed
- NONE
- Destination
- NONE
- Airport
- None
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
- 45
- Certificate
- Airline transport
- Airplane ratings
- Single-engine sea, Multi-engine land, Single-engine land, Multi-engine sea
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Flight hours
- 9,700 total · 2,700 in this make and model · 8,340 as pilot in command · 162 in the last 90 days · 61 in the last 30 days · 5 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Visibility
- 10 statute miles
- Lowest ceiling
- 2,500 ft overcast
- Temperature
- -0 °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.
Other investigations on N1106Z · 1
Matched to the same aircraft by N-number and date.