- Date
- May 1, 1992, 12:25 local (19:25 UTC)
- Place
- Hillsboro, OR
- Injuries
- 3 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N5211YHughes 369E
- Weather
- Visual (VMC) · Day
- Status
- Completed · report August 13, 1993
- Report
- Approved by Office Director
- FAA report
- 19920501013149A
- Case key
- 41666
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 in command's excessive application of collective.
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 an practice autorotation the pilot applied too much collective too early and the helicopter landed hard resulting in the main rotor blades flexing down and severing the tailboom assembly.
Aircraft
- Registration
- N5211Y
- Reported as
- Hughes 369E
- Category
- Helicopter
- Serial number
- 0107E
- Airframe hours
- 779
- Engine
- Allison 250-C20B, 420 horsepower, turbo shaft
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- Hillsboro Helicopters Inc.
- Registered owner
- Stubblefield, Jerry D.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · February 27, 1992 · 14 hours before
- Airport
- HIO · Portland-Hillsboro
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
- 35
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Helicopter
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 5,266 total · 10 in this make and model · 4,786 as pilot in command · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 40 statute miles
- Lowest ceiling
- None
- Temperature
- 55 °F, dew point 43 °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.