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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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NTSB Report

May 16, 2009 · Helio H-295 · N295SC

Kaktovic, AK

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
May 16, 2009
Injury Outcomes
No injuries (3 uninjured)
Location
Kaktovic, AK
Aircraft
Helio H-295
Tail Number
N295SC
Operator
Alaska Flyers
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC09LA047

The airline transport pilot was on a Title 14, Code of Federal Regulations Part 135 passenger flight, and was landing on a snow-covered glacier surrounded by mountains. During the approach to the glacier, the pilot said she encountered a strong downdraft as the airplane passed a ridge line. The airplane descended below her anticipated approach path, and she initiated a go-around, but the airplane continued to descend, and landed hard, about 200 feet short of the intended touchdown point. During touchdown, the airplane’s right main landing gear axle broke, which pivoted the airplane to the right. The airplane sustained substantial damage to the left side of the fuselage. In the pilot’s written statement to the NTSB, she reported that there were no preaccident mechanical problems with the airplane. She indicated that the surface wind on the glacier itself was light and variable, in contrast to the downdraft she encountered. She said that during subsequent approaches to the same site, she has altered her landing approaches to minimize the exposure to downdrafts, and increased the approach altitude, which would allow for a go-around if required.

NTSB Probable Cause

The pilot’s failure to maintain control of the airplane after an in-flight encounter with a downdraft while landing in mountainous terrain, and her decision to fly at an altitude where such an encounter made a successful recovery unlikely.

Full Narrative

On May 16, 2009, about 1250 Alaska daylight time, a wheel ski-equipped Helio H-295 airplane, N295SC, sustained substantial damage during a hard landing on snow-covered glacial terrain, about 56 miles south of Kaktovic, Alaska. The airplane was being operated by Alaska Flyers, Fairbanks, Alaska, as a visual flight rules (VFR) on-demand charter flight, under the provisions of Title 14 Code of Federal Regulations (CFR) Part 135. The airline transport pilot and the two passengers were not injured. Visual meteorological conditions prevailed, and company flight following procedures were in effect. The flight departed the Fairbanks International Airport, Fairbanks, about 0830. During a telephone conversation with the National Transportation Safety Board investigator-in-charge on May 18, the pilot reported that she was landing at the 6,200 foot level of the McCall Glacier, which was surrounded by mountainous terrain. She said that during the approach she encountered a downdraft as the airplane passed by a ridge line, and the airplane began to descend below her anticipated approach path. She added full engine power to initiate a go-around, but the airplane continued to descend, and it landed hard about 200 feet short of her intended touchdown point. During touchdown, the airplane’s right main landing gear axle broke, which pivoted the airplane to the right. The airplane sustained substantial damage to the left side of the fuselage. The pilot characterized wind conditions on the surface of the glacier as light and variable, but reported encountering stronger winds during the approach. In the pilot’s written statement to the NTSB, she indicated that there were no preaccident mechanical problems with the airplane. She also noted that following this accident, during subsequent approaches to the same site, she altered her landing approach to minimize the exposure to downdrafts in the area, and increased the approach altitude, which would allow for a go-around if required.

Flight

Event TypeAccident
Event Time12:50 AKDT
Nearest Airport0nm
Flight Plan FiledCvfr
Flight Plan ActivatedYes
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftHelio H-295
Tail NumberN295SC
Aircraft CategoryAir
DamageSubstantial
OperatorAlaska Flyers
Operating RulePart 135
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · GO-480-G1D6 · Reciprocating · 280
Seats6

People & Injuries

Injury SummaryNo injuries (3 uninjured)
Fatal0
Serious0
Minor0
Uninjured3
Total3
Crew 1Age 39 · Second Class · None

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data