SEA92LA067

NTSB accident investigation · Bell 47G3B1 · Miltonfreewater, OR · April 2, 1992

Accident · No injuriesLimited investigationFinal report
Date
April 2, 1992, 12:00 local (20:00 UTC)
Place
Miltonfreewater, OR
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N7920SBell 47G3B1
Weather
Visual (VMC) · Day
Status
Completed · report August 13, 1993
Report
Approved by Office Director
FAA report
19920402008299A
Case key
41648

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 inadequate prelight preparation by the pilot in his failure to ensure the filler hose was removed before attempting to takeoff.

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 flightTakeoff
Aerial application equipment - not removedCause
Preflight planning/preparation - inadequatePilot in commandCause
Hard landingDescent - uncontrolled

Analysis

The pilot was conducting continuous aerial application flts from a field site, and had landed to refuel and reload chemical. He attempted to takeoff with the chemical filler hose attached, lost control, and the acft landed hard.

Aircraft

Registration
N7920S
Reported as
Bell 47G3B1
Category
Helicopter
Serial number
6592
Airframe hours
1,672
Engine
Lycoming TVO-435B1A, 270 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
R. Gary Knight
Registered owner
R. Gary Knight
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · January 5, 1992 · 99 hours before

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
29
Certificate
Commercial
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
902 total · 651 in this make and model · 100 in the last 90 days · 80 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 5 knots
Visibility
30 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 48 °F
Altimeter
29.00 inHg
Observed at
ALW, 13 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.

Other investigations on N7920S · 1

Matched to the same aircraft by N-number and date.