ANC00TA075

NTSB accident investigation · Piper PA-18 · Quinhagak, AK · June 23, 2000

Accident · No injuriesFinal report
Date
June 22, 2000, 16:45 local (Jun 23, 2000, 00:45 UTC)
Place
Quinhagak, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N7059Piper PA-18
Weather
Visual (VMC) · Day
Status
Completed · report May 18, 2001
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
20000622042549A
Case key
49537

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 inadequate compensation for wind conditions during takeoff. Factors associated with the accident were the sudden windshift from a crosswind to a tailwind.

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.

In flight encounter with weatherTakeoff
Weather condition - sudden windshiftFactor
Weather condition - tailwindFactor
Climb - not obtained
Compensation for wind conditions - inadequatePilot in commandCause
In flight collision with terrain/waterTakeoff
Terrain condition - dirt bank/rising embankment

Analysis

The private pilot reported he was attempting to depart to the northeast against the river current. The wind varied from 270 degrees to 320 degrees at 15 knots. He indicated that as the airplane reached flying speed, the wind shifted to a tailwind, and the airplane did not climb. The pilot stated he was unable to turn the airplane to follow the river, both floats struck the riverbank, and the airplane came to rest on the adjacent airport runway. The airplane sustained substantial damage to both float attach fittings, and the fuselage.

Factual narrative

On June 22, 2000, at 1645 Alaska daylight time, a Piper PA-18 float equipped airplane, N7059, sustained substantial damage during takeoff from the Quinhagak Seaplane Base, Quinhagak, Alaska. The solo private pilot received no injuries. The public use flight was conducted under 14 CFR Part 91 by the State of Alaska, Department of Fish and Wildlife Protection. Visual meteorological conditions prevailed at the time of the accident, and a company flight plan was filed.

The pilot told the NTSB investigator-in-charge (IIC) during a telephone interview on June 26, and wrote in his NTSB Pilot/Operator report, that the wind varied from 270 degrees to 320 degrees at 15 knots. He stated he was taking off to the northeast on the Kanektok River, upriver against the current, with a left crosswind. He indicated that as the airplane reached flying speed, the wind shifted to a tailwind, and the airplane did not climb. The pilot stated he was unable to turn the airplane to follow the river, both floats struck the riverbank, and the airplane came to rest on the Quinhagak Airport runway. The airplane sustained substantial damage to both float attach fittings, and the fuselage.

Aircraft

Registration
N7059
Reported as
Piper PA-18
Category
Airplane
Serial number
18-8043
Airframe hours
9,684
Engine
Lycoming O-320-B2B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Public aircraft · Part 91
Registered owner
State Of Alaska-Public Safety
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 2, 2000 · 55 hours before
Departed
PAQH
Destination
KSM · Saint Mary'S, AK
Flight plan
Company VFR
Airport
PAQH · Quinhagak Seaplane, runway 4, 5,000 × 500 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
26
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
600 total · 350 in this make and model · 600 as pilot in command · 100 in the last 90 days · 50 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 15 knots
Visibility
40 statute miles
Lowest ceiling
None
Temperature
55 °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 N7059 · 1

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