LAX02LA196

NTSB accident investigation · Robinson R-22 Beta · North Las Vegas, NV · June 14, 2002

Accident · No injuriesLimited investigationFinal report
Date
June 14, 2002, 09:00 local (16:00 UTC)
Place
North Las Vegas, NV
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N7041BRobinson R-22 Beta
Weather
Visual (VMC) · Day
Status
Completed · report September 29, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20020614011429A
Case key
54956

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 student pilot's improper liftoff into tailwind conditions, improper use of the collective, and failure to relinquish the flight controls to the CFI, resulting in the helicopter colliding with terrain. Also causal was the CFI's inadequate supervision and delayed remedial action.

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
Weather condition - tailwind
Collective - improper use ofDual studentCause
Terrain condition - rough/uneven
Relinquishing of control - not performedDual studentCause
Supervision - inadequatePilot in command(cfi)Cause
Remedial action - delayedPilot in command(cfi)Cause

Analysis

The helicopter collided with the ground while attempting a downwind takeoff from a remote practice area. During takeoff, the student pilot turned the helicopter downwind. The CFI took the controls and maneuvered the helicopter back into the wind. The student failed to relinquish the controls and began raising the collective. The certified flight instructor (CFI) overpowered the student and lowered the collective. The student lifted the collective again, and the helicopter became airborne. After repeating this sequence, the CFI forced the collective down and held it in the lowered position. While touching down, the helicopter slowly began to move backwards and the aft portion of the right skid dug into the rough terrain. The helicopter rolled on its right side. The CFI did not report any mechanical problems with the helicopter prior to the accident.

Factual narrative

On June 14, 2002, about 0900 Pacific daylight time, a Robinson R22 Beta, N7041B, collided with the ground, while attempting a downwind takeoff from a remote practice site near the North Las Vegas Airport (VGT), North Las Vegas, Nevada. Mander Associated LLC was operating the helicopter under the provisions of 14 CFR Part 91. The certified flight instructor (CFI) and student pilot were not injured; the helicopter sustained substantial damage. Day visual meteorological conditions prevailed, and a flight plan had not been filed. The local instructional flight originated VGT about 0830.

In a written statement, the CFI reported that, after several successful practice takeoffs and landings, the student pilot was attempting to takeoff in the practice area. During takeoff, the student turned the helicopter downwind. The CFI took the controls and maneuvered the helicopter back into the wind. The student failed to relinquish the controls and began raising the collective. The CFI overpowered the student, and lowered the collective. The helicopter touched down. The student lifted the collective again, and the helicopter became airborne. After repeating this sequence, the CFI forced the collective down and held it in the lowered position.

The helicopter contacted the ground and moved sideways, bouncing to a stop. It slowly began to move backwards, and the aft portion of the right skid dug into the rough terrain. The helicopter rolled on its right side. The CFI recalled the duration of the accident was about 3 to 5 seconds. He did not report any mechanical problems with the helicopter prior to the accident.

The Robinson Pilot's Operating Handbook (POH) for the R22, Section 10- Safety Tips, Revision 10i, states that making a downwind takeoff could result in a loss of transitional lift and cause the helicopter to settle into ground obstacles.

Aircraft

Registration
N7041B
Reported as
Robinson R-22 Beta
Category
Helicopter
Serial number
3207
Airframe hours
585.8
Engine
Lycoming O-360-J2A, 180 hp, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Silver State Helicopters
Registered owner
Mander Associates LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · May 16, 2002 · 493.3 hours before
Departed
VGT · North Las Vegas, NV
Airport
KVGT · North Las Vegas Airport

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
55
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
February 28, 2001
Seat
Left
Flight hours
1,919 total · 451 in this make and model · 1,697 as pilot in command · 271 in the last 90 days · 109 in the last 30 days · 7 in the last 24 hours
Role
Student pilot
Age
36
Injuries
None
Certificate
Student
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 30 °F
Altimeter
29.87 inHg
Observed at
VGT, 8 nm away

Docket · 1

The files NTSB released with the investigation on July 16, 2004, on NTSB’s docket system: statements, records, photos and specialists’ reports. 299 KB 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.