ANC03LA055

NTSB accident investigation · de Havilland DHC-2 · Anchorage, AK · June 7, 2003

Accident · No injuriesLimited investigationFinal report
Date
June 6, 2003, 17:05 local (Jun 7, 2003, 01:05 UTC)
Place
Anchorage, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N343WBde Havilland DHC-2
Weather
Visual (VMC) · Day
Status
Completed · report November 25, 2003
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA
FAA report
20030606012249A
Case key
57173

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 incorrect positioning of the fuel tank selector to a nearly empty tank, which resulted in a loss of engine power due to fuel starvation, and subsequent emergency landing at an off-airport site.

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) - nonmechanicalApproach - vfr pattern - final approach
Fluid,fuel - starvationCause
Fuel tank selector position - incorrectPilot in commandCause
Forced landingEmergency descent/landing
In flight collision with objectEmergency landing
Object - tree(s)
Object - residence

Analysis

The float-equipped airplane was in the traffic pattern to land at a seaplane base when the engine lost all power, and the pilot made an emergency landing in the backyard of a private residence. During the forced landing, the airplane struck trees and a railing on the deck of the residence, sustaining structural damage to the left wing. The pilot reported that he had the right wing fuel tank selected, and thought the tank was about 1/4 full. He indicated that when the engine lost power, he was too low and didn't have sufficient time or altitude to switch to the belly tank and restore power. Postaccident draining of the fuel tanks disclosed about 18 gallons of fuel in the belly tank, and about one quart in the right wing tank.

Factual narrative

On June 6, 2003, about 1705 Alaska daylight time, a float-equipped de Havilland DHC-2 airplane, N343WB, received substantial damage when it collided with trees and a private residence following a loss of engine power while on approach to land at the Lake Hood Seaplane Base, Anchorage, Alaska. The solo commercial pilot was not injured. The Title 14, CFR Part 91 personal flight operated in visual meteorological conditions without a flight plan. The flight departed a remote lake near Beluga, Alaska, about 1635, and the destination was the Lake Hood Seaplane Base.

The National Transportation Safety Board (NTSB) investigator-in-charge (IIC) spoke with the pilot of the accident airplane, and an Anchorage FAA Flight Standards District Office inspector, at 1725. The pilot spoke with the IIC from the accident site using the FAA inspector's cellular phone. The pilot related that he had departed a remote lake near Beluga, and was on final approach to land at Lake Hood, when the engine lost all power. The pilot said it was a "fuel starvation event." He said he had the fuel selector on the right fuel tank, and thought the right tank was about 1/4 full, but the engine stopped when he was about 300 yards from the lake, and about 150 feet above the ground. He reported that he had insufficient time or altitude to switch to the belly tank and restore power, and that he had to make an off-airport emergency landing. The airplane subsequently struck trees, and then a railing on the deck in the backyard of a private residence on Lakeshore Drive, and came to rest in the residence's garden, with the left wing resting on the deck railing.

An FAA inspector at the accident site, and an NTSB investigator who viewed the airplane the day after the accident, noted structural damage to the left wing.

In the NTSB Pilot/Operator Aircraft Accident/Incident Report submitted by the pilot, he reported that when he drained the fuel tanks prior to moving the airplane, he recovered about one quart of fuel from the right wing tank, and about 18 gallons from the belly tank.

Aircraft

Registration
N343WB
Reported as
de Havilland DHC-2
Category
Airplane
Serial number
1644
Airframe hours
5,698
Engine
Pratt & Whitney R-985, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
John F. Sumrall
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 13, 2002 · 41 hours before
Departed
Beluga, AK
Destination
LHD · Anchorage, AK
Airport
LHD · Lake Hood Seaplane, runway 180, 1,930 × 200 ft, water

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
65
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
May 15, 2002
Seat
Left
Flight hours
6,860 total · 1,771 in this make and model · 4 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 13 knots
Visibility
9 statute miles
Lowest ceiling
4,800 ft broken
Temperature
54 °F, dew point 43 °F
Altimeter
30.09 inHg
Observed at
PALH

FAA reports on this event · 1

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