Hiller UH-12C N4732

Summary

On 14 June 1985 at about 04:51 local time, a Hiller UH-12C registered N4732 was involved in an accident near Warm Springs, Oregon, United States. One person was on board and one was seriously injured. The aircraft was substantially damaged. No probable cause statement is available for this record.

Date

14 June 1985 at 04:51

Classification

Accident

Location

Warm Springs, Oregon, United States

Coordinates

44.8192, -121.3099

Aircraft

Hiller UH-12C

Registration

N4732

Category

Helicopter

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Ferry

Phase of flight

Not recorded

Route

Unknown → Madras

Aircraft damage

Substantial

Weather

VMC

Light

Dusk

NTSB number

SEA85FA137

1 person was seriously injured.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

DURING A FLT FROM MADRAS, OR TO WALLA WALLA, WA, A LOSS OF ENG POWER OCCURRED DUE TO A FUEL FLOW PROBLEM & THE PLT MADE A SUCCESSFUL AUTOROTATION NEAR WARM SPRINGS, OR. A COMPANY MECHANIC WAS DISPATCHED TO THE HELICOPTER & HE REPAIRED A LOOSE FUEL LINE FITTING. LATE THAT EVENING, THE PLT STARTED & RAN THE ENG FOR ABOUT 10 MIN. HE THEN HOVERED FOR 4 TO 5 MIN BEFORE STARTING HIS DEPARTURE. THE PLT REPORTED THAT DURING DEPARTURE, THE ENG BEGAN LOSING RPM AT ABOUT 40 FT AGL. HE ATTEMPTED TO RESTORE POWER, BUT WAS UNABLE. SUBSEQUENTLY, THE HELICOPTER IMPACTED ON ITS SKID LANDING GEAR & TAIL SKID, THEN CAME TO REST ON ITS LEFT SIDE ABOUT 60 FT FROM THE IMPACT POINT. AN EXAM OF THE FUEL SYSTEM REVEALED THAT THE FUEL STRAINER, KOE/K2250B-2, WAS LOOSE AT BOTH ENGS OF THE GLASS & COULD BE TURNED WITH SLIGHT PRESSURE. THE BOLT AT THE BOTTOM OF THE LOWER PIECE WAS NOT SAFETY WIRED & WAS LOOSE.

Quoted verbatim from the NTSB record.