LAX84LA373

NTSB accident investigation · Hiller UH-12E · Yuba City, CA · June 27, 1984

Accident · No injuriesLimited investigationFinal report
Date
June 27, 1984, 07:05 local (14:05 UTC)
Place
Yuba City, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N530HAHiller UH-12E
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19840627027759A
Case key
24327

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.

Loss of engine power(total) - nonmechanicalTakeoff - initial climb
Aircraft preflight - inadequatePilot in commandCause
Fluid,fuel - starvationCause
Fuel system - improper use ofPilot in commandCause
Forced landingDescent - emergency
Autorotation - performedPilot in command
Roll overLanding - flare/touchdown

Analysis

After dispensing 8 loads, the plt refueled & took off with the 9th load. About 4 to 6 seconds into the flt, while approaching transitional lift at aprx 6 ft AGL, the helicopter began a vibration & immediately lost rotor RPM. The plt initiated a landing straight ahead, but the helicopter yawed to the left & touched down level in a crabbed-to-the-left attitude. The right skid collapsed & the helicopter rolled the the right. The main rotor struck the ground, then severed the tail boom & a 5 inch drive line. The plt suspected a vapor lock problem. He had shut off the fuel pump during the refueling & did not remember turning it back on. No preimpact part failure or malfunction was found.

Aircraft

Registration
N530HA
Reported as
Hiller UH-12E
Category
Helicopter
Serial number
5030
Airframe hours
1,657
Engine
Lycoming VO-540, 305 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Pingrey Brothers, Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · January 31, 1984 · 55 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
56
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
27,402 total · 1,980 in this make and model · 26,050 as pilot in command · 320 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Visibility
25 statute miles

FAA reports on this event · 1

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