LAX87DUJ05

NTSB accident investigation · Hiller UH-12E · Tolleson, AZ · May 19, 1987

Accident · No injuriesFinal report
Date
May 19, 1987, 07:20 local (14:20 UTC)
Place
Tolleson, AZ
Injuries
1 uninjured
Damage
Destroyed
Phase of flight
Standing
Aircraft
N4034THiller UH-12E
Weather
Visual (VMC) · Day
Status
Completed · report April 24, 1989
Report
Approved by Office Director
FAA report
19870519014169A
Case key
25309

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Roll overStanding - engine(s) operating
Terrain condition - downhillFactor
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Aircraft weight and balance - misjudgedPilot in commandCause
Planning/decision - improperPilot in commandFactor

Analysis

The plt stated that he landed the acft on a platform on top of a chemical tank truck. The truck was parked on a slight slope with its left side six inches lower than the right. The plt reduced power to idle and the loader began to load the helicopter with liquid chemical. The helicopter's tail began to drop and before the plt could increase power to resume flight, the helicopter fell off the platform (a height of 12 feet) and was destroyed by fire.

Aircraft

Registration
N4034T
Reported as
Hiller UH-12E
Category
Helicopter
Serial number
5190
Airframe hours
1,720
Engine
Lycoming VO-540-C2A, 305 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Aerial application · Part 137
Operator
Robert L. Leverton, doing business as Country Boy Drop Dusting Co.
Registered owner
R.S. Leverton/G.E. Leverton
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · February 2, 1987 · 30 hours before

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
80
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
22,100 total · 200 in this make and model · 22,100 as pilot in command · 10 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
40 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 43 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.