ANC09LA072

NTSB accident investigation · Dehavilland Beaver DHC-2 · Iliamna, AK · July 22, 2009

Accident · No injuriesLimited investigationFinal report
Date
July 22, 2009, 09:40 local (17:40 UTC)
Place
Iliamna, AK
Injuries
5 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N68088Dehavilland Beaver DHC-2
Defining event
Takeoff: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed · report May 11, 2010
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration (Operations)
FAA report
20090722047719A
Case key
74354

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's selection of an unsuitable landing/takeoff area with an unfavorable wind.

Findings · 5

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Terrain: waterEnvironmental issues › Physical environment · Contributed to outcomeDehavilland BEAVER U-6A: 1 caseAll aircraft: 97 cases
AircraftAircraft › Aircraft oper/perf/capability · Capability exceededDehavilland BEAVER U-6A: 2 casesAll aircraft: 63 cases
Wind: variable windEnvironmental issues › Conditions/weather/phenomena · Effect on operationDehavilland BEAVER U-6A: 1 caseAll aircraft: 113 cases
WindEnvironmental issues › Conditions/weather/phenomena · Decision related to conditionDehavilland BEAVER U-6A: 1 caseAll aircraft: 110 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot was departing from a river, downstream, in a float-equipped airplane, on a Title 14, CFR Part 135, on demand charter flight. He said that wind conditions were calm just before starting his southerly takeoff run. Just after takeoff, as the airplane climbed to about 20 feet above the water, it stopped climbing as it neared the departure end of the site. The airplane then descended into an area of tree-covered terrain, and came to rest about 400 feet from the bank of the river. The airplane sustained substantial damage to the wings, fuselage, and empennage. The pilot reported that there were no preaccident mechanical anomalies with the airplane, and said that after the accident, he noticed occasional gusts of wind from the northwest.

Factual narrative

On July 22, 2009, about 0940 Alaska daylight time, a float-equipped de Havilland DHC-2 (Beaver) airplane, N68088, sustained substantial damage when it collided with tree-covered terrain after takeoff, about 62 miles west of Iliamna, Alaska. The airplane was being operated as a visual flight rules (VFR) on demand charter flight under the provisions of 14 Code of Federal Regulations (CFR) Part 135, when the accident occurred. The airplane was owned and operated by Iliamna Air Taxi, Inc., Iliamna. The commercial pilot and four passengers were not injured. Visual meteorological conditions prevailed, and company flight following procedures were in effect. The flight was returning to the operator's base in Iliamna. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on July 22, the pilot related that before departing from the remote riverside fishing camp, he assessed the wind and water conditions before departing to the south and downstream. He said that wind conditions on the surface of the water were calm just before starting his takeoff run. The pilot reported that just after takeoff, as the airplane climbed to about 20 feet above the water, it stopped climbing as it neared the departure end of the site. He said as he attempted to climb the airplane, it passed over an area of tree-covered terrain at the end of the site, and then it began to gradually descend into the trees. According to the pilot, the airplane collided with a stand of trees, and came to rest about 400 feet from the bank of the river. The airplane sustained substantial damage to the wings, fuselage, and empennage. The pilot reported that there were no preaccident mechanical anomalies with the airplane, and he noted that after the accident he noticed occasional gusts of wind from the northwest.

Aircraft

Registration
N68088
Reported as
Dehavilland Beaver DHC-2
Category
Airplane
Serial number
1197
Airframe hours
9,376
Engine
Pratt & Whitney R-985, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Iliamna Air Taxi Inc
Registered owner
Iliamna Air Taxi Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · June 14, 2009 · 75 hours before
Departed
Iliamna, AK
Destination
ILI · Iliamna, 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
57
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Seat
Left
Flight hours
6,000 total · 4,000 in this make and model · 5,700 as pilot in command · 129 in the last 90 days · 87 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
20 statute miles
Lowest ceiling
3,000 ft broken
Temperature
57 °F
Altimeter
30.01 inHg

Docket · 1

The files NTSB released with the investigation on April 2, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 684 KB in all.

FAA reports on this event · 1

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