ANC21LA066

NTSB accident investigation · Cessna U206F · Igiugig, AK · August 2, 2021

Accident · Minor injuriesClass 4 · LimitedFinal report
Date
August 1, 2021, 16:45 local (Aug 2, 2021, 00:45 UTC)
Place
Igiugig, AK
Injuries
3 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N9608GCessna U206F
Defining event
Takeoff: Runway excursion
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Alaska Regional Office
Parties
FAA
FAA report
20210801006769A
Case key
103604

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 improper decision to continue a takeoff attempt when it became evident that the airplane would not become airborne before reaching the departure end shoreline.

Findings · 1

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.

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 attempting a takeoff in a float-equipped airplane. He estimated the gross weight of the airplane to be about 300 lbs. under the maximum gross weight limitation. He stated that after seeing the shoreline get “uncomfortably closer,” he wondered why the airplane was not getting airborne. The airplane subsequently impacted the shore, nosed over, and came to rest inverted on the beach. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The FAA publication Seaplane, Skiplane, and Float/Ski Equipped Helicopter Operations Handbook (FAA-H-8083-23) states that for seaplanes, as weight increases, the floats sink deeper into the water, creating a significant amount of water drag force during initial acceleration that results in a longer takeoff run.

Aircraft

Registration
N9608G
Reported as
Cessna U206F (NO SERIES)
Category
Airplane
Serial number
U20601808
Built
1972
Airframe hours
13,668.2
Engine
Cont Motor IO 520 SERIES, 285 horsepower, reciprocating
Damage
Substantial damage
Flight
Other work use · Part 135
Operator
Branch River Air Service Inc, doing business as Branch River Air
Registered owner
River Front Akn LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · July 17, 2021 · 66.1 hours before
Destination
PAKN · King Salmon, AK
Equipment
Stall warning system, ADS-B, Electronic flight bag or handheld device, Handheld GPS

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
44
Injuries
None
Certificate
Airline transport
Airplane ratings
Single-engine sea, Multi-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
June 5, 2021
Seat
Left
Restraint
3-point
Flight hours
1,935 total · 250 in this make and model · 1,839 as pilot in command · 249 in the last 90 days · 128 in the last 30 days · 6.8 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
30° at 11 knots
Temperature
63 °F, dew point 57 °F
Observed at
PAIG, 20 nm away
METAR
PAIG 020056Z AUTO 03011KT FEW050 SCT065 17/14 RMK AO2 SLPNO T01720139 PWINO $

Docket · 3

The files NTSB released with the investigation on November 12, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.8 MB 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.

Other investigations on N9608G · 1

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