ANC13CA037

NTSB accident investigation · Dehavilland DHC-2 MK. I(L20A) · Anchorage, AK · March 26, 2013

Accident · No injuriesData collectionFinal report
Date
March 26, 2013, 10:00 local (18:00 UTC)
Place
Anchorage, AK
Injuries
4 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N995SPDehavilland DHC-2 MK. I(L20A)
Defining event
Taxi-to runway: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report June 4, 2013
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration
FAA report
20130326005831A
Case key
86703

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 failure to maintain directional control of the airplane while taxiing on a snow-covered taxiway.

Findings · 2

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 of the wheel-/ski-equipped airplane was taxiing for departure on a snow-covered taxiway when he lost directional control in the deep snow and veered to the left, colliding with a parked airplane. The airplane sustained substantial damage to the left wing and lift strut. The pilot stated that there were no preaccident mechanical anomalies that would have precluded normal operation. The operator wrote that the accident may have been prevented if he had waited for the taxiway to be cleared of snow.

Factual narrative

The pilot of the wheel/ski equipped airplane was taxiing for departure on a snow-covered taxiway, when he lost directional control in the deep snow, and veered to the left colliding with a parked airplane. The airplane sustained substantial damage to the left wing and lift strut. The pilot stated that there were no preaccident mechanical anomalies that would have precluded normal operation. In the recommendation section of the NTSB Accident/Incident Reporting Form 6120.1, the operator stated that the accident may have been prevented if they had waited for the taxiway to be cleared of snow.

Aircraft

Registration
N995SP
Reported as
Dehavilland DHC-2 MK. I(L20A)
Category
Airplane
Serial number
995
Airframe hours
15,514
Engine
P&W R-985 SERIES, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Joe Schuster, doing business as Sportsman Air Service
Registered owner
Sportsmans Leasing LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 14, 2013
Departed
Z41 · Anchorage, AK
Destination
Skwentna, AK
Flight plan
Company VFR
Airport
Z41 · Lake Hood

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
54
Injuries
None
Certificates
Commercial, Airline transport
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Seat
Left
Flight hours
16,200 total · 2,500 in this make and model · 16,100 as pilot in command · 75 in the last 90 days · 50 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 6 knots
Visibility
10 statute miles
Lowest ceiling
4,500 ft broken
Temperature
7 °F, dew point -11 °F
Altimeter
29.97 inHg
Observed at
PANC, 1 nm away

Docket · 1

The files NTSB released with the investigation on May 20, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.5 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.