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March 19, 2011 · Piper PA-18A 150 · N3573P

Beluga Lake, AK

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
March 19, 2011
Injury Outcomes
No injuries (1 uninjured)
Location
Beluga Lake, AK
Aircraft
Piper PA-18A 150
Tail Number
N3573P
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC11CA020

The pilot stated that he was landing the ski-equipped airplane on a glacier when the left ski got caught in the snow, and the airplane nosed over. The left wing and the vertical stabilizer sustained substantial damage. The pilot reported no preaccident mechanical anomalies with the airplane. The airplane was equipped with a required emergency locator transmitter (ELT), however, it was an older generation ELT that transmitted on 121.5 megahertz, not the newer, digital version that transmits on 406 megahertz. As of February 1, 2009, the search and rescue satellites that receive ELT signals no longer had the capability to receive the older analog 121.5 megahertz ELTs. The 406 megahertz ELTs are received within seconds of activation, and rescuers are notified within minutes of the accident location. In this accident, the pilot was missing for four days, but was able to hike off the glacier, where he was located by rescuers.

NTSB Probable Cause

Environmental issues-Physical environment-Runway/land/takeoff/taxi surfa-Snow/slush/ice covered-Contributed to outcome

Full Narrative

The pilot stated that he was landing the ski-equipped airplane on a glacier when the left ski caught in the snow, and the airplane nosed over. The pilot reported no preaccident mechanical anomalies with the airplane. The left wing and the vertical stabilizer sustained substantial damage. The airplane was equipped with a required emergency locator transmitter (ELT), however, it was an older generation ELT that transmitted on 121.5 megahertz, not the newer, digital version that transmits on 406 megahertz. As of February 1, 2009, the search and rescue satellites that receive ELT signals no longer had the capability to receive the older analog 121.5 megahertz ELTs. The 406 megahertz ELTs are received within seconds of activation, and rescuers are notified within minutes of the accident location. In this accident, the pilot was missing for four days, but was able to hike off the glacier, where he was located by rescuers.

Flight

Event TypeAccident
Event Time13:00 AKDT
Nearest Airport0nm
Flight Plan FiledNone
Aircraft FireNo

Aircraft

AircraftPiper PA-18A 150
Tail NumberN3573P
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320 SERIES · Reciprocating · 180
Seats1

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 45 · Third Class · None

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility25 sm
CeilingOvercast 5500 ft
Temperature / Dew Point27 C / 0 C
Altimeter0

Appendix: Source Data