FTW98LA163

NTSB accident investigation · Robinson R22 Beta · Riviera, TX · March 31, 1998

Accident · No injuriesLimited investigationFinal report
Date
March 31, 1998, 12:30 local (18:30 UTC)
Place
Riviera, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N2628BRobinson R22 Beta
Weather
Visual (VMC) · Day
Status
Completed · report December 8, 1998
Report
Approved by Office Director
FAA report
19980331004859A
Case key
20564

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 pilot's failure to maintain terrain clearance while performing an evasive maneuver to avoid a charging bull, resulting in a tail rotor blade strike and the failure of the tail rotor drive shaft. Factors were the charging bull and the lack of suitable terrain for the forced landing.

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.

In flight collision with objectHover
Object - animal(s)Factor
Evasive maneuver - performedPilot in command
Clearance - not maintainedPilot in commandCause
Rotor system,tail rotor - blade strikeCause
Rotor drive system,tail rotor drive shaft - failure,totalCause
Tail rotor/anti-torque control - not possiblePilot in command
Forced landingEmergency descent/landing
Autorotation - performedPilot in command
Roll overEmergency landing
Terrain condition - water
Terrain condition - none suitableFactor

Analysis

The pilot was using the helicopter to herd cattle and was attempting to move a bull towards a corral when the animal charged the helicopter. As the pilot maneuvered to avoid the bull, the helicopter's tail rotor contacted the water in a stock tank (pond), resulting in failure of the tail rotor drive shaft. The pilot performed an autorotation. The helicopter spun twice to the right, touched down in a level attitude in the stock tank, and rolled onto its right side.

Factual narrative

On March 31, 1998, at 1230 central standard time, a Robinson R22 Beta helicopter, N2628B, registered to and operated by Mesquite Helicopter Services, Inc., of Alice, Texas, was substantially damaged during a forced landing following a tail rotor ground strike while hovering near Riviera, Texas. The commercial pilot, the sole occupant, was not injured. No flight plan was filed and visual meteorological conditions prevailed for the Title 14 CFR Part 91 local business flight.

The pilot reported that he was using the helicopter to herd cattle. With the helicopter "at an altitude of 3-5 feet AGL," he was attempting to move a bull towards a corral when the animal charged the helicopter. As the pilot maneuvered to avoid the bull, the helicopter's tail rotor contacted the water in a stock tank (pond), resulting in failure of the tail rotor drive shaft. The pilot performed an autorotation. The helicopter "spun twice" to the right, touched down in a level attitude in the stock tank, and rolled onto its right side.

According to the pilot, the helicopter "came to rest on its right side in about 2 1/2 feet of water." He reported that the fuselage was dented, the main rotors were "severely bent," and the tail cone was "chopped."

Aircraft

Registration
N2628B
Reported as
Robinson R22 Beta
Category
Helicopter
Serial number
0771
Engine
Lycoming O-320-B2C, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Other work use · Part 91
Registered owner
Mesquite Helicopter Services
Airworthiness certificate
Standard, Normal

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
40
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
12,000 total · 2,000 in this make and model · 11,500 as pilot in command · 150 in the last 90 days · 40 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 15 knots, gusting 20
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F

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 N2628B · 1

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