DEN87LA206

NTSB accident investigation · Bell 206B · Albuquerque, NM · August 3, 1987

Accident · No injuriesLimited investigationFinal report
Date
August 3, 1987, 07:30 local (13:30 UTC)
Place
Albuquerque, NM
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N5001QBell 206B
Weather
Visual (VMC) · Day
Status
Completed · report November 8, 1988
Report
Approved by Office Director
FAA report
19870803040789A
Case key
17290

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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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(partial) - mech failure/malfCruise - normal
Fuel system,dump valve - failure,partialCause
Forced landingDescent - emergency
Hard landingLanding - flare/touchdown
Flare - inadequatePilot in commandCause
Misc rotorcraft,tail boom - penetrated
Misc rotorcraft,tail boom - separation

Analysis

During cruise flt a partial power failure occurred requiring a full emerg autorotative landing to be conducted to an uneven dirt area. Following touchdown the acft slid forward and the tail rose causing the main rotor to contact the tail boom severing the last three feet. There were no injuries and the acft sustained substantial damage. The power loss was due to a separation of the eng governor pyv valve causing the eng to decelerate to a below idle condition. No determination could be made as to the cause of the separation.

Aircraft

Registration
N5001Q
Reported as
Bell 206B
Category
Helicopter
Serial number
2413
Airframe hours
3,296
Engine
Allison 250-C20B, 425 horsepower, turbo shaft
Damage
Substantial damage
Flight
Business · Part 91
Operator
Donald Ambabo
Registered owner
T.E. Mitchell And Sons, Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · December 1, 1986 · 10 hours before
Departed
4AC · Albuquerque, NM
Airport
4AC · Coronado

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
37
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
10,025 total · 1,025 in this make and model · 8,200 as pilot in command · 50 in the last 90 days · 40 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 6 knots
Visibility
60 statute miles
Lowest ceiling
7,500 ft broken
Temperature
70 °F, dew point 61 °F
Altimeter
30.00 inHg
Observed at
ABQ, 6 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.