ANC95LA132

NTSB accident investigation · de Havilland DHC-2 · Iliamna, AK · August 8, 1995

Accident · No injuriesLimited investigationFinal report
Date
August 8, 1995, 08:15 local (16:15 UTC)
Place
Iliamna, AK
Injuries
8 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N144Qde Havilland DHC-2
Weather
Visual (VMC) · Day
Status
Completed · report March 6, 1996
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19950808023869A
Case key
2711

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 abrupt (improper) use of the throttle.

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(partial) - nonmechanicalGo-around (vfr)
Throttle/power control - abruptPilot in commandCause
In flight collision with terrain/waterGo-around (vfr)
Terrain condition - rising

Analysis

The pilot was performing a glassy water landing maneuver on a lake. The airplane flew past the pilot's intended point of landing, and he aborted the landing by rapidly applying power. The pilot stated the engine coughed and then 'came to life' but the airplane would not outclimb rising terrain in the direction of its flight path.

Factual narrative

On August 8, 1995, at 0815 Alaska daylight time, a float equipped DeHavilland DHC-2 Beaver airplane, N144Q, registered to and operated by Rainbow River Lodge, sustained substantial damage during an aborted landing at Crosswind Lake, located near the confluence of Moraine and Funnel Creeks, 40 miles south of Iliamna, Alaska. The business flight, operating under 14 CFR Part 91, departed the lodge on Lake Iliamna and the destination was Crosswind Lake. A company flight plan was in effect and visual meteorological conditions prevailed. The airline transport certificated pilot, the fishing guide, and the six passengers were not injured.

During a telephone conversation with the pilot on August 10, 1995, he stated he was performing a glassy water landing and the airplane did not touchdown on the water and it "floated" approximately 1/3 of the way past the intended landing area. He applied power and the engine coughed. He stated that he applied throttle rapidly and not as smoothly as if he were applying power for a takeoff. The engine then "came to life" and he attempted to climb. The airplane would not out climb the rising terrain located in the direction of the intended flight.

Examination of the engine at the accident site by an Alaska Aircraft Sales mechanic showed no reason for the engine problem. The carburetor was removed and reinstalled on the replacement engine. The ground test was normal and the subsequent flight was normal.

Aircraft

Registration
N144Q
Reported as
de Havilland DHC-2
Category
Airplane
Serial number
1463
Airframe hours
5,100
Engine
P&W R-985-14B, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Business · Part 91
Registered owner
Rainbow River Lodge
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 15, 1995 · 200 hours before
Departed
AK
Destination
Crosswind Lake, AK

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
45
Certificates
Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land, Multi-engine sea, Single-engine sea
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
12,500 total · 2,300 in this make and model · 11,250 as pilot in command · 2 in the last 90 days · 2 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
20 statute miles
Lowest ceiling
1,500 ft broken
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 N144Q · 1

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