19851101055799A

Accident · Substantial damage

FAA accident report · Hiller UH-12E · Vernal, UT · November 1, 1985

Date: November 1, 1985 · 16:30 local
Place: Vernal, UT
Phase of flight: Fcd/Prec Ldg From Cruise
Operating rules: Air taxi and commuter (Part 135)
Damage: Substantial damage
Aircraft: N400AH
NTSB investigation: NTSBDEN86LA016
Reported as: Hiller UH12E
Reported engine: Lycoming TIVO540A2A
People aboard: 1
Fatal injuries: 0
Pilot’s flight hours: 4,641 total4,260 in this make and model30 in the last 90 days

N400AHRegistration cancelled Apr 22, 2003 · Hiller UH-12ES/N 1177 · Built 1975 Airframe modelHiller UH-12E Engine modelLycoming TI0-540 seriesTurbo-prop

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

Turbocharger failed, impeller lodged on shroud after retaining nut backed out. Turbocharger installation on STC.

As the FAA filed it

TURBOCHARGER FAILED, IMPELLER LODGED ON SHROUD AFTER RETAINING NUT BACKED OUT. TURBOCHARGER INSTALLATION ON STC.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

NTSB DEN86LA016Accident · No injuriesLimited investigationFinal reportVernal, UTThe plt stated he had just departed a site located on top of a mountain, which is approximately 12,200 ft MSL. The pilot said 30 seconds later, the helicopter lost partial power. Requiring him to make a force landing. The inspection of the turbocharger…Nov 1, 1985 · Substantial damage

Other reports on N400AH · 4

Matched to the same aircraft by N-number and date.

Accident 19880102000119APwr Off Run Land (Autorotation · Vernal, UTEngine quit en route. Made hard autorotation landing on a road. Connecting rod broken from engine overtemp operationJan 2, 1988 · Substantial damage Accident 19830831045459APwr Off Run Land (Autorotation · Manning, NDLost engine power while pulling a long line with a high deck angle. Low fuel condition allowed fuel unporting.Aug 31, 1983 · Substantial damage Accident 19811117074319ALow Level Operations · Craig, COMade downwind pass while shooting coyote. RPM decayed, forced to land. Skid broke on hitting a root on landing.Nov 17, 1981 · Substantial damage Accident 19790724021779ALow Level Operations · Johnstown, COAg pilot conducting spraying operation exhausted fuel and crashed during spray run.Jul 24, 1979 · Substantial damage