ANC92LA077

NTSB accident investigation · De Havilland DHC-2-T · Alexander Creek, AK · May 24, 1992

Accident · No injuriesLimited investigationFinal report
Date
May 23, 1992, 16:20 local (May 24, 1992, 00:20 UTC)
Place
Alexander Creek, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N4478De Havilland DHC-2-T
Weather
Visual (VMC) · Day
Status
Completed · report May 26, 1993
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19920523019479A
Case key
5728

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 pilot's inadvertent deactivation of the engine's fuel supply by switching off the fuel shut off. Factor related to the accident was the soft mud in the forced landing area.

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 power(total) - nonmechanicalCruise - normal
Fuel system,fuel shutoff - switched off
Fuel supply - inadvertent deactivationPilot in commandCause
Forced landingDescent - emergency
Terrain condition - softFactor

Analysis

The pilot stated he wanted to turn on the cabin heat so he reached down and pulled a handle without looking at which handle he was pulling. He inadvertently shut off the fuel shut off. The cabin heat handle and the emergency fuel shut off are located on the center pedestal, behind the vertical column of the control yoke, about 8 inches apart. Each has a different shaped handle and each is placarded with a different colored placard. The fuel shut off was safety wired to the on position. The airplane was equipped with amphibious floats. The tide in cook inlet was receding and the pilot elected to land on the mud flats. The float braces collapsed upon landing.

Aircraft

Registration
N4478
Reported as
De Havilland DHC-2-T
Category
Airplane
Serial number
1653-TB30
Airframe hours
5,470
Engine
P&W PT6A-6A, 550 horsepower, turbo prop
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Bryan Bergt
Registered owner
Markair Express
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 15, 1992 · 1 hours before
Departed
ANC · Anchorage, AK
Destination
DLG · Dillingham, AK
Flight plan
Company VFR

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
27
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,641 total · 260 in this make and model · 769 as pilot in command · 120 in the last 90 days · 81 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
90 statute miles
Lowest ceiling
None
Temperature
61 °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 N4478 · 2

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