NYC93LA083

NTSB accident investigation · Robinson R22B · Ronkonkoma, NY · April 14, 1993

Accident · No injuriesLimited investigationFinal report
Date
April 14, 1993, 16:18 local (20:18 UTC)
Place
Ronkonkoma, NY
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N344WARobinson R22B
Weather
Visual (VMC) · Day
Status
Completed · report November 19, 1993
Report
Approved by Office Director
FAA report
19930414009329A
Case key
37308

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 lack of adequate supervision and delayed remedial action by the flight instructor. A factor related to the accident was the delay in adding power by the student pilot which resulted in a low rotor RPM condition.

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.

Nose overLanding - flare/touchdown
Supervision - inadequatePilot in command(cfi)Cause
Throttle/power control - improper use ofDual studentFactor
Rotor rpm - not maintainedDual studentFactor
Remedial action - delayedPilot in command(cfi)Cause

Analysis

The student pilot was making an autorotation with a power recovery. During the flare, the low rotor warning horn came on. The flight instructor took control of the helicopter and attempted to recover the rotor RPM. He was unsuccessful and made a run on landing in a nose low attitude. The skids dug in and the helicopter nosed over. The CFI had 205 hours total time and 20 hours as a CFI.

Aircraft

Registration
N344WA
Reported as
Robinson R22B
Category
Helicopter
Serial number
0585
Airframe hours
3,411
Engine
Lycoming O-320, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Eastern Helicopters
Registered owner
Atlantic Coast Helicopter
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 22, 1993 · 64 hours before
Departed
ISP
Destination
ISP
Airport
ISP · Long Island

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
22
Certificate
Commercial
Instrument ratings
Helicopter
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
205 total · 205 in this make and model · 152 as pilot in command · 19 in the last 90 days · 13 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 12 knots
Visibility
12 statute miles
Lowest ceiling
25,000 ft overcast
Temperature
54 °F, dew point 37 °F
Altimeter
29.00 inHg
Observed at
ISP, 1 nm away

FAA reports on this event · 1

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