- Date
- January 18, 1987, 07:00 local (15:00 UTC)
- Place
- Lemon Cove, CA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N1107NHughes 369D
- Weather
- Visual (VMC) · Day
- Status
- Completed · report March 31, 1989
- Report
- Approved by Office Director
- FAA report
- 19870118082129A
- Case key
- 25510
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
The plt rprtd that while at 100 to 150 ft AGL on an apch to land, the eng lost pwr as though it had flamed out. He entered an autorotation, but was unable to reach the helipad. Subsequently, the helicopter landed in trees & was badly dmgd. Drg the investigation, the eng was removed fm the airframe & operationally checked, but no reason was found for the pwr loss. Disassembly of the eng revealed svrl discrepancies, but none of which would have singularly resulted in a flame-out. An exam of the eng's internal combustion liner revealed an overtemp blister, cracks on the flange & non- approved welds; a reqd mod of the liner wasn't completed. The igniter & fuel nozzle mounting pad on the outer combustionliner was slightly displaced (.009' fm perpendicular), resulting in a slight displacement of the flame pattern inside the inner liner. The #1 pwr turbine nozzle was burned, cracked & eroded. There was evidence the eng had experienced 1 or more overtemp conds, possibly fm hot starts, hi pwr lvls or lack of cooling bfr eng shutdowns.
Aircraft
- Registration
- N1107N
- Reported as
- Hughes 369D
- Category
- Helicopter
- Serial number
- 210902D
- Airframe hours
- 1,123
- Engine
- Allison 250-C20B, 375 horsepower, turbo shaft
- Damage
- Substantial damage
- Flight
- Business · Part 91
- Registered owner
- Cairns, Dave
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · October 14, 1986 · 35 hours before
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
- 41
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 585 total · 496 as pilot in command · 11 in the last 90 days · 7 in the last 30 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 36 °F, dew point 27 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.