ANC97LA114

NTSB accident investigation · Cessna 170B · Juneau, AK · August 2, 1997

Accident · No injuriesLimited investigationFinal report
Date
August 1, 1997, 22:00 local (Aug 2, 1997, 06:00 UTC)
Place
Juneau, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N3491CCessna 170B
Weather
Visual (VMC) · Dusk
Status
Completed · report November 10, 1998
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19970801025829A
Case key
3037

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 selection of an unsuitable off-airport site for takeoff, and his premature lift-off.

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 control - in flightTakeoff - initial climb
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Light condition - dusk
Lift-off - prematurePilot in commandCause
In flight collision with terrain/waterTakeoff - initial climb
Terrain condition - water

Analysis

The pilot was departing from an 800-foot-long beach site at dusk. During lift-off at less than flying speed the airplane dragged a wingtip and subsequently settled into the water.

Factual narrative

On August 1, 1997, about 2200 Alaska daylight time, a Cessna 170B tail wheel equipped airplane, N3491C, sustained substantial damage when it impacted water during an attempted takeoff from a beach on Seymour Canal, about 22 miles southeast of Juneau, Alaska, at position 58-00.0 north latitude, 134-20.0 west longitude. The private certificated pilot was uninjured. The flight was conducted under 14 CFR Part 91 in visual meteorological conditions as a personal flight. Lighting conditions were evening twilight.

The pilot stated to the NTSB investigator that he began his takeoff from hard, wet sand with an estimated 800 feet of takeoff length available. When he saw the water become visible in the landing light, he applied flaps to become airborne, but did not have sufficient airspeed to fly. The airplane's right wing contacted the water, and the airplane came to rest approximately 200 feet from the shoreline, in approximately three feet of water. The pilot waded to shore, and was picked up by a passing aircraft about 1000 on August 2, 1997.

The pilot stated that he weighs 180 pounds, and that there was 90 pounds of fuel on board. The passenger seats had all been removed, and there was a thirty pound pack and a ten pound rifle on board.

Aircraft

Registration
N3491C
Reported as
Cessna 170B
Category
Airplane
Serial number
26534
Airframe hours
3,383
Engine
Continental O-300A, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
John L. Demuth
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 10, 1997 · 20 hours before
Destination
JNU · 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
31
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
60 in this make and model

Weather

Conditions
Visual (VMC) · Dusk
Wind
330° at 5 knots
Visibility
3 statute miles
Lowest ceiling
8,000 ft overcast
Temperature
50 °F

FAA reports on this event · 1

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