SEA90LA081

NTSB accident investigation · Hughes 369D · Kelso, WA · May 21, 1990

Accident · FatalLimited investigationFinal report
Date
May 21, 1990, 14:00 local (21:00 UTC)
Place
Kelso, WA
Injuries
1 fatal, 1 uninjured; on the ground: 1 fatal
Damage
No damage
Phase of flight
Initial climb
Aircraft
N8306FHughes 369D
Weather
Visual (VMC) · Day
Status
Completed · report September 30, 1991
Report
Approved by Office Director
FAA report
19900521016979A
Case key
41195

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

Failure of the pilot to keep the external load clear of obstacles (trees). Factors related to the accident were: failure of the pilot and ground crewman to follow safety procedures, and the proximity of the trees.

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.

In flight collision with objectTakeoff - initial climb
Procedures/directives - not followedPilot in commandFactor
Procedures/directives - not followedGround personnelFactor
Object - tree(s)Factor
Clearance - not maintainedPilot in commandCause

Analysis

The pilot took off with an external longline load (bundle of cedar blocks). The bundle struck tree branches in the thick forest canopy over the pickup site & came apart. A falling block of wood from the bundle struck & fatally injured the ground hook-up crewman. The company operating manual required that ground personnel be clear of the area during the lift-off & that the pilot make a vertical takeoff to an altitude that would clear the load of obstructions.

Aircraft

Registration
N8306F
Reported as
Hughes 369D
Category
Helicopter
Serial number
380274D
Airframe hours
2,846
Engine
Allison 250-C20B, 420 horsepower, turbo shaft
Damage
No damage
Flight
Other work use · Part 133
Registered owner
Olympic Air, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 15, 1990 · 33 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
31
Certificate
Commercial
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
4,615 total · 202 in the last 90 days · 74 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
70° at 4 knots
Visibility
20 statute miles
Lowest ceiling
9,000 ft overcast
Temperature
57 °F, dew point 52 °F
Altimeter
29.00 inHg
Observed at
PDX, 36 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 N8306F · 4

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