SEA82DA047

NTSB accident investigation · Sikorsky S-58J · Siletz, OR · April 6, 1982

Accident · No injuriesFinal report
Date
April 6, 1982, 09:45 local (17:45 UTC)
Place
Siletz, OR
Injuries
2 uninjured
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N47246Sikorsky S-58J
Weather
Visual (VMC) · Day
Status
Completed · report April 6, 1983
Report
Approved by Office Director
FAA report
19820406008069A
Case key
72623

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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Analysis

After lift-off with a 3000 pound external sling load, a "pop" was heard followed by low-level vibration. Rotor RPM decayed and an autorotation was effected to a forced landing in a revine. Postcrash inspection revealed a failure of the engine drive "short shaft".

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 powerTakeoff - initial climb
Accessory drive assy,drive shaft - failure,totalCause
Forced landingLanding - flare/touchdown

Aircraft

Registration
N47246
Reported as
Sikorsky S-58J
Category
Helicopter
Serial number
58-960
Airframe hours
7,929
Engine
P&W PT6 T-3, 1,800 horsepower, turbo shaft
Damage
Destroyed
Flight
Part 133
Operator
Pacific Helicopters, Inc.
Registered owner
Pacific Helicopters, Inc.
Departed
Siletz, OR
Destination
Siletz, OR

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
35
Certificates
Commercial, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Flight hours
8,521 total · 2,016 in this make and model · 8,521 as pilot in command · 250 in the last 90 days · 111 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
45° at 15 knots
Visibility
10 statute miles
Lowest ceiling
5,000 ft broken
Temperature
113 °F

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 N47246 · 1

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