ANC97LA105

NTSB accident investigation · de Havilland DHC-2 MK-I · Juneau, AK · June 22, 1997

Accident · No injuriesLimited investigationFinal report
Date
June 22, 1997, 14:45 local (22:45 UTC)
Place
Juneau, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N470DBde Havilland DHC-2 MK-I
Weather
Visual (VMC) · Day
Status
Completed · report November 10, 1998
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19970622025809A
Case key
3028

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 misjudged touchdown which resulted in dragging the right wingtip and rupturing the fuel tank. A factor associated with the accident is the rough water conditions.

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.

Hard landingLanding - flare/touchdown
Touchdown - misjudgedPilot in commandCause
Terrain condition - water,roughFactor
Dragged wing,rotor,pod,float or tail/skidLanding - flare/touchdown

Analysis

The float-equipped airplane was observed striking its right wing on water 3 miles west of Juneau, Alaska, while landing, then taking off again. One hour later, witnesses at a lake 30 miles south of Juneau, observed the airplane land, drag a wing and strike the propeller on the water, then take off. The private pilot reported that while in cruise, after the second takeoff, the engine stopped, and he made a power-off landing to the water. Postaccident inspection revealed substantial damage to the right wing.

Factual narrative

On June 22, 1997, about 1445 Alaska daylight time, a float equipped DeHavilland DHC-2 MK-I airplane, N470DB, sustained substantial damage during a hard landing on the water near Lena Point, two miles west of the Juneau, Alaska, airport, and during a subsequent hard landing at Hasselborg Lake, 30 miles south of Juneau. The solo, private certificated pilot was uninjured. The airplane was owned and operated by Thomas L. Hall of Juneau, Alaska. The flight was conducted under 14 CFR Part 91 as a personal flight. No flight plan was filed, and visual meteorological conditions prevailed at the time of the accident.

Witnesses described the airplane's right wing contacting the water while landing at Lena Point, and then observing the airplane depart.

Additional witnesses provided the following description of the airplane landing at Hasselborg Lake at 1430: "The right float began to drag and dip...the right wing tip hit the water...the plane tipped forward and the propeller hit the water...the nose and right wing was in the water and I could see the full bottom of each float. Somehow the plane didn't go over and slammed back down on the floats...It appeared the right wing tip was damaged and that a piece of the wing tip was folded up and visible on the upper side of the end of the wing...a very short time after landing, the pilot applied power and took off."

The pilot stated in the NTSB Pilot/Operator Report that after departing Hasselborg Lake, water poured over the right passenger window while in a left bank, and that the airplane developed, "an abrupt right yaw...shortly thereafter the engine sputtered and died at about 1500 feet." The pilot said he made an engine out landing and paddled the airplane onto a beach.

On June 23, 1997, FAA aviation safety inspectors observed the airplane secured at the Juneau Airport float pond. Their inspection revealed damage to the right wing's outboard butt rib, cracked upper and lower right wing skins, and a ruptured right wing tip fuel tank.

Aircraft

Registration
N470DB
Reported as
de Havilland DHC-2 MK-I
Category
Airplane
Serial number
917
Airframe hours
9,030
Engine
P&W R-985, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Thomas L. Hall
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 5, 1997 · 51 hours before
Departed
JNU · AK
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
44
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Class 3, Invalid Medical for flight
Seat
Left
Flight hours
352 total · 51 in this make and model · 224 as pilot in command · 51 in the last 90 days · 28 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
30 statute miles
Lowest ceiling
None
Temperature
75 °F

FAA reports on this event · 1

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