Aviation Crash Map

Bell UH-1B N64789

14 August 1990 · Bieber, California, United States · Serious injuries

Summary

On 14 August 1990 at about 00:58 local time, a Bell UH-1B registered N64789, operated by Intermountain Air Services, was involved in an accident near Bieber, California, United States. One person was on board and one was seriously injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

The record

Date
at 00:58
Classification
Accident
Location
Bieber, California, United States
Coordinates
41.0602, -121.1096
Aircraft
Bell UH-1B
Registration
N64789
Category
Helicopter
Engines
1
Operator
Intermountain Air Services
Operating rule
Part 133: Rotorcraft Ext. Load
Purpose of flight
Public Use
Phase of flight
Not recorded
Aircraft damage
Substantial
Weather
VMC
Light
Day
NTSB number
LAX90DXQ04

People

1 person was seriously injured.

On board Died Serious Minor Uninjured
1 0 1 0 0

Probable cause

THE PILOT'S FAILURE TO MAINTAIN AIRCRAFT CONTROL WHEN INTENTIONALLY SLOWING HIS AIRCRAFT TO OFF LOAD WATER ON FIRE. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT'S FAILURE TO ARM AND RELEASE THE EXTERNAL LOAD.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

THE PILOT WAS FLYING A FIRE FIGHTING MISSION AND WAS APPROACHING SOUTHERLY ASCENDING TERRAIN FROM THE EAST. THE AIRCRAFT APPROACHED THE TERRAIN AND SLOWED TO MAKE A WATER DROP. AS IT SLOWED THE TAIL TURNED TO THE LEFT AND THE HELICOPTER LOST ALTITUDE AND SETTLED INTO THE TREES. THE PILOT HEARD THE LOW RPM AUDIO AND SAW THE LOW RPM WARNING LIGHT. HE ATTEMPTED TO RELEASE THE WATER LOAD. EXAMINATION OF THE ENGINE AND ENGINE COMPONENTS REVEALED NO EVIDENCE OF A MALFUNCTION OR FAILURE. THE TEMPERATURE REPORTEDLY WAS BETWEEN 82 TO 86 DEGREES F WITH THE WIND FROM THE NORTH AT 5 TO 8 KNOTS.

Quoted verbatim from the NTSB record.

Other Bell UH-1B accidents

Date Aircraft Location Operator Outcome Died
6 May 1990 Bell UH-1B
N8142W
Ulysses, Kansas, United States - Fatal 1
21 Jun 1990 Bell UH-1B
N99634
Yakima, Washington, United States Usda Forest Service No injuries -
12 Jan 1990 Bell UH-1B
N15SX
San Diego, Texas, United States Coastal Corporation Fatal 1
12 Mar 1991 Bell UH-1B
N9687R
Vero Beach, Florida, United States Colony Services, Inc. Minor injuries -
22 May 1989 Bell UH-1B
N508SC
Oldtown, Maryland, United States Precision Air Services, Inc. Fatal 2
29 Sep 1989 Bell UH-1B
N840MC
Plains, Georgia, United States - Fatal 2

All 62 records for this type

Other accidents in this area

Date Aircraft Location Operator Outcome Died
15 Apr 1990 Cessna 180
N9394C
Soledad, California, United States - No injuries -
10 Oct 1990 Cessna 150
N68350
Riverside, California, United States PAR Flight No injuries -
17 Apr 1990 Piper PA46
N4387S
Paso Robles, California, United States Piper Aircraft Corp. No injuries -
7 Oct 1990 Cessna 182M
N70892
Bakersfield, California, United States - No injuries -
1 Apr 1990 Piper J-3
N7363H
Creston, California, United States - Minor injuries -
11 Oct 1990 Bell 47G4
N477JM
Merced, California, United States John W. Myers Serious injuries -

All 170,864 records in United States