SEA83FYM05

NTSB accident investigation · Brantly Helicopter B-2 · Milton Freewtr., OR · May 4, 1983

Accident · FatalFinal report
Date
May 4, 1983, 08:00 local (15:00 UTC)
Place
Milton Freewtr., OR
Injuries
1 fatal, 1 serious
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N5912XBrantly Helicopter B-2
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19830504019939A
Case key
39648

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.

Airframe/component/system failure/malfunctionTakeoff - initial climb
Rotor system,main rotor blade spar - overloadCause
Rotor system,main rotor blade - failure,totalCause
Rotor system,main rotor blade - separationFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The helicopter was observed to climb to about 50-75 ft AGL & then something flew off the acft. One m/r blade was found intact 240 ft from the wreckage. The outer blade was heavily damaged at the tip area. The inboard blade section had the pylon tube attached to it. The flange end of the pylon tube was bent, & about 50% of the flange itself was missing. Metallurgical exam revealed an overstress tensile separation. The plt did not hold any plt certificate. He purchased thehelicopter February to hover over his cherry orchards utilizing the rotor down wash to knock water off the fruit. The plt had received about 15 hrs of training since he purchased the helicopter.

Aircraft

Registration
N5912X
Reported as
Brantly Helicopter B-2
Category
Helicopter
Serial number
48
Airframe hours
971
Engine
Lycoming VO-360-A1A, 180 horsepower, reciprocating
Damage
Substantial damage
Fire
On-Ground
Flight
Personal · Part 91
Registered owner
Christ & Greg Feigner
Last inspection
Annual · February 24, 1983 · 37 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
48
Airplane ratings
Single-engine land
Medical
Unknown
Seat
Left
Toxicology
Performed

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
20 statute miles
Lowest ceiling
None
Temperature
61 °F
Altimeter
29.00 inHg

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 N5912X · 1

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