FTW02LA080

NTSB accident investigation · Robinson R-22A · Encino, TX · February 11, 2002

Accident · No injuriesLimited investigationFinal report
Date
February 11, 2002, 08:00 local (14:00 UTC)
Place
Encino, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N8557ZRobinson R-22A
Weather
Visual (VMC) · Day
Status
Completed · report November 25, 2003
Report
Approved by Office Director
Parties
FAA FSDO
FAA report
20020211000949A
Case key
54187

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

The NTSB’s determination of the probable cause, and any contributing factors.

The pilot's failure to maintain aircraft control during lift off from a transport trailer resulting in dynamic rollover of the helicopter.

Analysis

During lift off from a transport trailer, the helicopter's left main landing skid came in contact with a post on the transport trailer which resulted in the dynamic rollover of the helicopter. During the rollover, the main rotor blades contacted the ground, and the helicopter came to rest on it's left side.

Factual narrative

On February 11, 2002, at 0800 central standard time, a Robinson R-22A helicopter, N8557Z, was substantially damaged following a loss of control during takeoff from a transport trailer near a staging area 10 miles south of Encino, Texas. The helicopter was registered to Weslaco Dodge Truck Center, Inc., of Weslaco, Texas, and operated by the Payne McBride Cattle Company, dba Rio Grande Helicopters of Mission, Texas. The commercial pilot, sole occupant, was not injured. Visual meteorological conditions prevailed, and a flight plan was not filed for the 14 Code of Federal Regulations Part 91 cattle herding flight. The flight was originating at the time of the accident.

The pilot reported in the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2), that during lift off from the transport trailer, "the top of the helicopter pitched to the left, and the left main landing skid remained nose low." The pilot stated that the left main landing skid came in contact with the left guide rail post on the transport trailer which "increase[ed] the helicopters tilt to the left." Subsequently, "dynamic rollover occurred causing the main rotor blades and the left side of the cabin to impact the ground." The pilot further reported that he saw a helicopter less than 100 feet behind him moving from right to left during his attempted liftoff from the trailer.

An examination of the helicopter, by the FAA inspector who responded to the accident site, revealed that the left landing skid was fractured, both the main rotor and tail rotor blades were damaged, the tail boom and airframe were bent, and the left ground handling tab was curled outward.

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 overTakeoff
Aircraft control - not maintainedPilot in commandCause
Dynamic rollover - inadvertentPilot in command

Aircraft

Registration
N8557Z
Reported as
Robinson R-22A
Category
Helicopter
Serial number
0464
Airframe hours
4,644.1
Engine
Lycoming O-320-B2C, 124 horsepower, reciprocating
Damage
Substantial damage
Flight
Other work use · Part 91
Operator
Payne Mcbride Cattle Company, doing business as Rio Grande Helicopters
Registered owner
Weslaco Dodge Truck Center, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 27, 2001 · 89.7 hours before
Departed
Encino, 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
51
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
June 30, 2001
Seat
Right
Flight hours
4,678 total · 1,600 in this make and model · 4,506 as pilot in command · 88 in the last 90 days · 34 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 5 knots
Visibility
5 statute miles
Lowest ceiling
None
Temperature
46 °F

Docket · 3

The files NTSB released with the investigation on October 7, 2003, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.5 MB in all.

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 N8557Z · 1

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