Aviation Crash Map

Bell 47G-2 N11VH

12 June 1986 · Zillah, Washington, United States · No injuries

Summary

On 12 June 1986 at about 11:45 local time, a Bell 47G-2 registered N11VH was involved in an accident near Zillah, Washington, United States. One person was on board and nobody was injured. The aircraft was destroyed. No probable cause statement is available for this record.

The record

Date
at 11:45
Classification
Accident
Location
Zillah, Washington, United States
Coordinates
47.2006, -120.8993
Aircraft
Bell 47G-2
Registration
N11VH
Category
Helicopter
Engines
1
Operator
Not recorded
Operating rule
Part 137: Agricultural
Purpose of flight
Aerial Application
Phase of flight
Not recorded
Route
Buena → Unknown
Aircraft damage
Destroyed
Weather
VMC
Light
Dawn
NTSB number
SEA86LA143

People

Nobody was injured.

On board Died Serious Minor Uninjured
1 0 0 0 1

Probable cause

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

EN ROUTE TO THE LOCAL SPRAY AREA A TOTAL LOSS OF POWER OCCURRED ALONG WITH A LOSS OF OIL PRESSURE. THE ACFT WAS APRX 200 FT AGL OVER A PEAR ORCHARD. THE PLT WAS ATTEMPTING TO AUTOROTATE ONTO A NEARBY ROAD BUT THE LEFT SKID CAUGHT THE ROOF TOP OF A METAL SHED. THE HELICOPTER CRASHED THROUGH THE ROOF OF THE SHED AND ROLLED OVER ONTO ITS SIDE. INVESTIGATION REVEALED THAT THE NUMBER THREE CYLINDER ROD BOLT HAD FAILED. METALLURGICAL EXAM REVEALED THAT THE NUMBER 3 CYLINDER CONNECTING ROD CAP HAD FAILED AS A RESULT OF OVERSTRESS FORCES DUE TO EXCESSIVE HEATING OF THE ROD AND CAP. FAILURE OF THE NUMBER 3 CYLINDER CONNECTING ROD BOLT WAS DUE TO FATIGUE CRACKING. THE MOST LIKELY CAUSE OF THE OVERHEATING WAS DUE TO A DETERIORATED BEARING.

Quoted verbatim from the NTSB record.

Other Bell 47 accidents

Date Aircraft Location Operator Outcome Died
31 Jul 1986 Bell 47G-3B1
N700EC
Lihue, Hawaii, United States - Serious injuries -
10 Nov 1986 Bell 47G-3B-1
N47042
Goshen, Utah, United States - No injuries -
18 Apr 1986 Bell 47G-3B1
N1371X
Lapwai, Idaho, United States - No injuries -
8 Jul 1986 Bell 47G-5
N1316X
Porterville, California, United States - Serious injuries -
6 Mar 1986 Bell 47G-2
N6727D
Stockton, California, United States - No injuries -
28 Nov 1986 Bell 47-G2A
N7579
Jamesburg, New Jersey, United States
no coordinates
- Serious injuries -

All 1,633 records for this type

Other accidents in this area

Date Aircraft Location Operator Outcome Died
27 Mar 1986 Bob White AJ1
N363JW
Vancouver, Washington, United States KEN D. Johnson No injuries -
29 Mar 1986 Cessna 188-A
N4736Q
Warden, Washington, United States Terry Kilmer Corp Dusing, Inc. No injuries -
31 Mar 1986 Beechcraft E-35
N2998B
Couger, Washington, United States - Minor injuries -
30 Mar 1986 Hiller 12E
N87595
Walla Walla, Washington, United States - No injuries -
10 Apr 1986 Morley AVID FLYER
N318M
Spokane, Washington, United States Daniel Morley Serious injuries -
24 Apr 1986 Piper PA-36
N57608
Mattawa, Washington, United States - Minor injuries -

All 170,864 records in United States