SEA98LA050

NTSB accident investigation · Hughes 369E · Seattle, WA · March 22, 1998

Accident · Minor injuriesLimited investigationFinal report
Date
March 21, 1998, 17:45 local (Mar 22, 1998, 01:45 UTC)
Place
Seattle, WA
Injuries
2 minor, 2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N5245PHughes 369E
Weather
Visual (VMC) · Day
Status
Completed · report February 11, 2000
Report
Approved by Office Director
FAA report
19980321021639A
Case key
42765

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

Loss of engine power due to a restricted fuel system filter.

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 powerApproach - vfr pattern - final approach
Fuel system,filter - restricted
Hard landingLanding - flare/touchdown

Analysis

The pilot stated that he was making a normal approach until about 30 feet in the air on short final, when he experienced a loss of power. After the resulting hard landing, the engine was still running and shut down by the pilot. Pressure and vacuum checks were performed on the engine fuel system and the engine was run successfully. Upon reassembly of the helicopter, the airframe mounted anti-ice fuel filter element was found to be restricted and the bypass switch was inoperative.

Factual narrative

On March 21, 1998, approximately 1745 Pacific standard time, a Hughes 369E, N5245P, registered to and operated by Trident Seafoods Corporation, was substantially damaged during a hard landing at Boeing Field, Seattle, WA. The pilot and one passenger received minor injuries. The two remaining passengers received no injuries. Visual meteorological conditions prevailed and no flight plan had been filed. The flight, which was for personal purposes, was operated under 14CFR91, and originated from Barnes Island, WA approximately 40 minutes prior to the accident.

During an interview, the pilot stated that everything was normal until he was about 30 feet in the air on short final. At that point he experienced a loss of power but the engine did not quit. After the resulting hard landing, the engine was still running and shut down by the pilot.

The helicopter was examined on March 23, 1998 after it had been moved to a hanger. Pressure and vacuum checks were performed on the engine fuel system. Fuel screens were also examined. No discrepancies were noted. The engine was later transported by the insurance company to ACRO Aerospace in Vancouver, BC, Canada. The Allison representative who observed the testing there reported that the engine started and ran normally during the tests except for a discrepancy about 40 minutes into the test when the engine failed to accelerate from idle. The scroll to PC filter tube B-nuts were found to be loose and the engine again performed normally after tightening. This line had previously been removed as part of the system pressure tests.

Aircraft

Registration
N5245P
Reported as
Hughes 369E
Category
Helicopter
Serial number
0140E
Airframe hours
4,523
Engine
Allison A250-C20B, 420 horsepower, turbo shaft
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Trident Seafoods Corporation
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 14, 1997 · 10 hours before
Departed
Barnes Island, WA
Destination
BFI
Airport
BFI · Boeing Field

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
51
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
11,465 total · 9,000 in this make and model · 11,240 as pilot in command · 9 in the last 90 days · 5 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 5 knots
Visibility
10 statute miles
Lowest ceiling
5,000 ft broken
Temperature
55 °F, dew point 50 °F
Altimeter
29.00 inHg
Observed at
BFI

FAA reports on this event · 1

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