NYC96LA077

NTSB accident investigation · Robinson R22-BETA · Fairfield, NJ · March 23, 1996

Accident · No injuriesLimited investigationFinal report
Date
March 23, 1996, 08:32 local (13:32 UTC)
Place
Fairfield, NJ
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N221CWRobinson R22-BETA
Weather
Visual (VMC) · Day
Status
Completed · report August 20, 1996
Report
Approved by Office Director
FAA report
19960323004869A
Case key
39160

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 flight instructor's inadequate supervision in that he delayed corrective action in recovering the low rotor RPM resulting in a loss of control.

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 - in flightHover - in ground effect
Rotor rpm - not maintainedDual studentFactor
Remedial action - delayedPilot in command(cfi)Cause
Supervision - inadequatePilot in command(cfi)Cause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The certified flight instructor (CFI) and student pilot had been performing hover practice. During an ascent to a hover, the helicopter drifted left and rearward, and the main rotor RPM decayed. The CFI took over the controls and attempted to stabilize the helicopter, when the helicopter's tail rotor struck the ground. The helicopter then spun 720 degrees, struck the ground and rolled over. Examination of the wreckage revealed no preimpact failure of the helicopter controls or drive train.

Factual narrative

On March 23, 1996, at 0832 eastern standard time, a Robinson R22-Beta, N221CW, was substantially damaged during a collision with terrain, while hovering at the Essex County Airport, Fairfield, New Jersey. The certified flight instructor and student pilot were not injured. Visual meteorological conditions prevailed for the instructional flight that originated at Essex County Airport (CDW), at 0810. No flight plan had been filed for the flight conducted under 14 CFR Part 91.

In the certified flight instructor's (CFI) written statement, he said:

"...The student had the controls and was making a landing from a hover. Winds were approximately 15 knots from the west. After landing, the helicopter made an immediate takeoff and drifted to the left rear with low rotor RPM light and horn...[I] immediately took the controls and attempted to increase throttle and stabilize the helicopter with cyclic input, but by that time the helicopter was uncontrollable. It then entered a 720 degree spin, settled to the ground and rolled onto it's left side..."

According to the student pilot (SP), he was setting the helicopter down from a 3-foot-hover when the low RPM warning horn activated. The SP stated that the CFI then took over the controls. The SP further stated:

"...The PIC tried to roll on throttle to get rotor RPM back in the green. He tried to pull back on the cyclic and the tail rotor hit the ground. The helicopter then did a 720 [degree turn] and hit the ground."

Examination of the wreckage revealed no pre-impact failure of the helicopter controls or drive train. The tail rotor section, which included the blades, hub, gear box, and upper and lower vertical fins, were separated from the tail boom. These components were located about 50 feet northwest of the main wreckage. One tail rotor blade had separated from the hub. The main rotor blades were curved upwards and formed a bow shape.

Aircraft

Registration
N221CW
Reported as
Robinson R22-BETA
Category
Helicopter
Serial number
2060
Airframe hours
984
Engine
Lycoming O-320-B2C, 131 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Skyline Helicopters, Inc.
Registered owner
Southport Aircraft Corp.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · March 22, 1996 · 1 hours before
Departed
CDW
Airport
CDW · Essex County

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
Certificates
Commercial, Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
9,400 total · 600 in this make and model · 9,000 as pilot in command · 22 in the last 90 days · 10 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 12 knots
Visibility
8 statute miles
Lowest ceiling
5,000 ft broken
Temperature
36 °F, dew point 27 °F
Altimeter
29.00 inHg
Observed at
CDW

FAA reports on this event · 1

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