ANC12CA041

NTSB accident investigation · Dehavilland DHC-2 MK. I(L20A) · Talkeetna, AK · May 22, 2012

Accident · No injuriesData collectionFinal report
Date
May 22, 2012, 14:12 local (22:12 UTC)
Place
Talkeetna, AK
Injuries
5 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N323KTDehavilland DHC-2 MK. I(L20A)
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report October 9, 2012
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration
Case key
83733

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 inadvertently landed with the parking brake set.

Findings · 3

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.

Landing gear system: brakeAircraft › Aircraft systems · Unintentional use/operationDehavilland DHC-2 MK. I(L20A): 2 casesAll aircraft: 297 casesProbable cause

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 landed at a base camp on a glacier. To prevent the airplane from sliding, he raised the wheel skis and set the parking brake. Upon departure, he lowered the skis but forgot to release the parking brake. Upon touchdown on a hard surfaced runway, the airplane came to an abrupt stop and nosed down, then settled back on the tailwheel. The horizontal stabilizer sustained substantial damage. The pilot indicated there were no preaccident mechanical anomalies with the airplane. He said the accident could have been prevented if he had ensured that the parking brake was not set on the glacier, which would have prevented an abrupt stop when he later landed on wheels.

Factual narrative

The pilot landed at a base camp on a glacier. To prevent the airplane from sliding, he raised the wheel skis and set the parking brake. He lowered the skis and departed the glacier, forgetting to release the parking brake. Upon touchdown on a hard surfaced runway, the airplane came to an abrupt stop and nosed down, then settled back on the tailwheel. The horizontal stabilizer sustained substantial damage. The pilot indicated there were no preaccident mechanical anomalies with the airplane.

Aircraft

Registration
N323KT
Reported as
Dehavilland DHC-2 MK. I(L20A)
Category
Airplane
Serial number
1022
Airframe hours
12,824
Engine
P&W R-985 SERIES, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Rust Properties LLC, doing business as K2 Aviation
Registered owner
Rust Properties LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · April 4, 2012 · 7 hours before
Departed
KahiltnaGlacier, AK
Destination
PATK · Talkeetna, AK
Flight plan
VFR
Airport
PATK · Talkeetna, runway 36, 3,500 × 75 ft, asphalt

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
60
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
June 10, 2011
Seat
Left
Flight hours
6,631 total · 944 in this make and model · 6,591 as pilot in command · 35 in the last 90 days · 35 in the last 30 days · 7 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 32 °F
Altimeter
29.54 inHg
Observed at
PATK

Docket · 1

The files NTSB released with the investigation on July 27, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.7 MB in all.

Other investigations on N323KT · 3

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