FTW85LA315

NTSB accident investigation · Bell 206B · Damon, TX · August 9, 1985

Accident · Minor injuriesLimited investigationFinal report
Date
August 9, 1985, 14:15 local (19:15 UTC)
Place
Damon, TX
Injuries
1 minor
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N22952Bell 206B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19850809040609A
Case key
21821

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
Engine assembly,other - failure,totalCause
Forced landingDescent - emergency
In flight collision with objectDescent - emergency
Object - tree(s)Factor
Terrain condition - none suitableFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The plt experienced an eng deceleration to flt idle while cruising 1000 MSL. He autorotated into trees in a heavily wooded area. A subsequent eng disassembly and examination revealed the pwr control line, p/n 6848471-B, was broken at its attaching 'b' nut sleeve. This can cause the eng to decelerate to flt idle from a cruise pwr setting. Further disassembly revealed no other problem which could cause this to occur.

Aircraft

Registration
N22952
Reported as
Bell 206B
Category
Helicopter
Serial number
3592
Airframe hours
754
Engine
Allison 250-C20J, 317 horsepower, turbo shaft
Damage
Destroyed
Flight
Positioning · Part 91
Operator
Evergreen Helicopters Inc.
Registered owner
Evergreen Equity, Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · February 1, 1985 · 64 hours before
Departed
AAP · Houston, TX
Destination
XS10 · Matagorda Is., TX

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
49
Certificate
Commercial
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
6,939 total · 6,939 as pilot in command · 61 in the last 90 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
135° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None

FAA reports on this event · 1

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