- Date
- March 15, 1984, 11:30 local (17:30 UTC)
- Place
- Ulysses, KS
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N1021YHiller UH-12B
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19840315007069A
- Case key
- 33653
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 made an autorotative precautionary landing after feeling vibrations in the anti-torque pedals. The acft was turned into the wind but landed hard in a field. The plt upon exiting the acft found the anti-torque rotor and gearbox missing. They were found 100 yards away, back along the flt path. Analysis of the failed parts revealed an area of fatigue in the attachment fittings of the anti-torque rotor and gearbox.
Aircraft
- Registration
- N1021Y
- Reported as
- Hiller UH-12B
- Category
- Helicopter
- Serial number
- MH353
- Airframe hours
- 1,803
- Engine
- Franklin 6V4-200-C33, 200 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Myers Helicopter Service
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · February 1, 1984 · 5 hours before
- Departed
- Ulysses, KS
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
- 21
- Certificate
- Commercial
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 205 total · 47 in this make and model · 36 as pilot in command · 47 in the last 90 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 360° at 12 knots
- Visibility
- 15 statute miles
- Lowest ceiling
- None
- Temperature
- 45 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.