ANC21LA023

NTSB accident investigation · Taylorcraft BC12-D · Palmer, AK · March 4, 2021

Accident · No injuriesClass 4 · LimitedFinal report
Date
March 3, 2021, 17:30 local (Mar 4, 2021, 02:30 UTC)
Place
Palmer, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N43300Taylorcraft BC12-D
Defining event
Taxi: Miscellaneous/other
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
FAA report
20210303001119I
Case key
102737

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 selection of unsuitable terrain for taxi, which resulted in the airplane encountering a crevasse.

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.

Terrain: sloped/uneven terrainEnvironmental issues › Physical environment · Contributed to outcomeTaylorcraft BC12-D: 1 caseAll aircraft: 270 cases

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 reported that, while departing from the off-airport snow-covered glacier, he was not comfortable with the acceleration of the tailwheel-ski-equipped airplane and aborted the takeoff. He then began a back taxi and allowed the airplane to make a wide radius turn. Subsequently, during the turn the airplane dropped vertically into an unseen crevasse. The airplane sustained substantial damage to both wing lift struts. The pilot reported no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N43300
Reported as
Taylorcraft BC12-D
Category
Airplane
Serial number
6959
Built
1946
Airframe hours
4,163.3
Engine
Cont Motor C85-12, 85 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 6, 2020
Departed
AQY · Girdwood, AK
Destination
Bryn Mawr Glac., AK
Equipment
None

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
33
Injuries
None
Certificate
Airline transport
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
October 1, 2020
Seat
Left
Restraint
3-point
Flight hours
6,500 total · 550 in this make and model · 5,400 as pilot in command · 55 in the last 90 days · 26 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
46 °F, dew point 9 °F
Altimeter
29.58 inHg
Observed at
PAAQ, 48 nm away
METAR
PAAQ 040053Z 00000KT 10SM CLR M07/M13 A2955 RMK AO2 SLP012 T10721128

FAA reports on this event · 1

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