FTW88DRA03

NTSB accident investigation · Hiller UH-12-D · Bon-Wier, TX · February 17, 1988

Accident · Serious injuriesFinal report
Date
February 16, 1988, 18:00 local (Feb 17, 1988, 00:00 UTC)
Place
Bon-Wier, TX
Injuries
1 serious
Damage
Destroyed
Phase of flight
Takeoff
Aircraft
N48265Hiller UH-12-D
Weather
Visual (VMC) · Day
Status
Completed · report June 25, 1990
Report
Approved by Office Director
FAA report
19880216003479A
Case key
22472

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

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Probable cause

Ground crewmember's failure to follow established procedures for secureing the aircraft to the transport trailer.

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 control - on ground/waterTakeoff
Aircraft handling - improperGround personnelCause
Procedures/directives - not followedGround personnelCause
Crew/group coordination - poorCause
Roll overDescent - uncontrolled

Analysis

The acft was being positioned onto a transport trailer after landing. A grnd crewmember secured the left rear skid to the trailer by means of a holding pin. He then proceeded to secure the right front skid (in front of the pilot). The right front skid was misaligned and the crewmember could not secure the pin. The briefed procedure for securing the acft to the trailer was for the crewmember to pin the right front skid first, so that the pilot would know that he was partially secured to the trailer. Upon seeing that the crewmember was having difficulty pinning the rt front skid, the plt attempted to lift off and reposition the acft. As pwr was applied, the acft rotated about the left rear skid and the tail rotor struck the ground. It subsequently spun and rolled, coming to rest inverted.

Aircraft

Registration
N48265
Reported as
Hiller UH-12-D
Category
Helicopter
Serial number
1060
Airframe hours
12,911
Engine
Lycoming VO-540-C2A, 260 horsepower, reciprocating
Damage
Destroyed
Flight
Positioning · Part 91
Operator
Thomas E. Hanks, doing business as Custom Air Service
Registered owner
Hanks Hel. Spraying Serv. Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 9, 1987 · 64 hours before
Departed
NONE · Bon-Wier, TX

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
43
Certificate
Commercial
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
7,013 total · 3,619 in this make and model · 6,843 as pilot in command · 8 in the last 90 days · 3 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F

FAA reports on this event · 1

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