FTW88DRA05

NTSB accident investigation · Hiller UH-12E · La Salle, TX · April 4, 1988

Accident · No injuriesFinal report
Date
April 4, 1988, 10:30 local (15:30 UTC)
Place
La Salle, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N4029DHiller UH-12E
Weather
Visual (VMC) · Day
Status
Completed · report April 25, 1989
Report
Approved by Office Director
FAA report
19880404007519A
Case key
22474

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) - nonmechanicalManeuvering - aerial application
Aircraft preflight - improperPilot in commandCause
Fluid,fuel - waterCause
Refueling - improperCompany maintenance personnelCause
Hard landingLanding - flare/touchdown
Autorotation - performed
Altitude - inadequateFactor

Analysis

Acft was substantially damaged during an emergency autorotation following an engine failure while the acft was completing an aerial application maneuver. Acft touched down tail low and the main rotor blades flexed down and cut off the tail boom. Investigation revealed water in the carb bowl, the acft fuel tank and the refueling vehicle.

Aircraft

Registration
N4029D
Reported as
Hiller UH-12E
Category
Helicopter
Serial number
5098
Airframe hours
1,560
Engine
Lycoming VO-540-C-2A, 305 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Glenn Bud Herring
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · August 30, 1987 · 48 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
59
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
25,400 total · 3,000 in this make and model · 25,000 as pilot in command · 78 in the last 90 days · 30 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 3 knots
Visibility
10 statute miles
Lowest ceiling
700 ft overcast
Temperature
68 °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.

Other investigations on N4029D · 1

Matched to the same aircraft by N-number and date.