Hiller UH-12E N173HA

Summary

On 31 August 1983 at about 21:45 local time, a Hiller UH-12E registered N173HA, operated by Benson Flying Service, was involved in an accident near Corwith, Iowa, United States. One person was on board and one had minor injuries. The aircraft was destroyed. No probable cause statement is available for this record.

Date

31 August 1983 at 21:45

Classification

Accident

Location

Corwith, Iowa, United States

Coordinates

42.9801, -93.9503

Aircraft

Hiller UH-12E

Registration

N173HA

Category

Helicopter

Engines

1

Operator

Benson Flying Service

Operating rule

Part 91: General Aviation

Purpose of flight

Ferry

Phase of flight

Not recorded

Route

Garner → Fonda

Aircraft damage

Destroyed

Weather

VMC

Light

Day

NTSB number

MKC83LA207

1 person had minor injuries.

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

WHILE EN ROUTE, THE PLT HEARD A CLANKING NOISE BEHIND HIM WHICH WAS FOLLOWED BY A SEVERE VIBRATION OF THE FLT CONTROLS. HE INITIATED AN AUTOROTATIVE DESCENT FROM 3000 FT. HE SAID THE HELICOPTER BEGAN TO ROLL LEFT, THEN RIGHTED ITSELF. THE HELICOPTER TOUCHED DOWN WITH A FORWARD SPEED OF ABOUT 50 MPH, THEN ROLLED & WAS DESTROYED. AN INVESTIGATION REVEALED THAT THE CONTROL ROTOR CUFF, PN 36124-3, HAD FAILED FROM FATIGUE.

Quoted verbatim from the NTSB record.