NYC82DFJ11

NTSB accident investigation · Hughes 500 · Little Valley, NY · March 2, 1982

Accident · No injuriesFinal report
Date
March 2, 1982, 11:05 local (16:05 UTC)
Place
Little Valley, NY
Injuries
4 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N8690FHughes 500
Weather
Instrument (IMC) · Day
Status
Completed · report March 2, 1983
Report
Approved by Office Director
FAA report
19820302002899A
Case key
71449

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

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 engine power(total) - nonmechanicalCruise
Weather condition - low ceilingFactor
Weather condition - turbulenceFactor
Fuel system,ram air/induction air - blocked(partial)Cause
Warning system(other) - erraticCause
Forced landingDescent - emergency
Hard landingLanding - flare/touchdown
Autorotation - performedPilot in command

Analysis

About 10 minutes after takeoff in heavy, wet, blowing snow, the engine lost power. At that time, the helicopter was at about 100 ft AGL. At the first indication of a power loss, the pilot initiated and completed an autorotative landing in an open field. During touchdown, the main rotor blades flexed downward and struck the tail boom. The auto reignition functioned and the engine was operating at the time of landing. An investigation revealed the particle separator had become completely clogged with snow. The pilot did not receive advance warning from the particle separator differential pressure sensor and cockpit warning light system. Therefore, he did not manually release the particle separator bypass door prior to the engine flame-out.

Aircraft

Registration
N8690F
Reported as
Hughes 500
Category
Helicopter
Serial number
165D
Airframe hours
1,829
Engine
Allison 250-C20B, 375 horsepower, turbo shaft
Damage
Substantial damage
Flight
Executive/Corporate · Part 91
Operator
Evirogas,Inc.
Registered owner
Evirogas,Inc.
Departed
Ellicottville, NY
Destination
Mayville, NY

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
42
Certificate
Commercial
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Flight hours
4,000 total · 700 in this make and model · 3,782 as pilot in command · 115 in the last 90 days · 4 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Lowest ceiling
400 ft overcast
Temperature
82 °F
Altimeter
30.00 inHg
Observed at
BFD

FAA reports on this event · 1

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