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Aviation safety reports, made easier to study

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November 18, 2007 · Cessna 170B · N170BP

Nikolai, AK

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
November 18, 2007
Injury Outcomes
No injuries (1 uninjured)
Location
Nikolai, AK
Aircraft
Cessna 170B
Tail Number
N170BP
Operator
Richard Anselment
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC08CA020

The commercial certificated pilot was conducting a solo cross-country flight in a tailwheel-equipped airplane under Title 14, CFR Part 91, when the accident occurred. He reported that he received a special VFR clearance at the departure airport, and as soon as he cleared class E airspace, the airplane started to accumulate rime ice on the wings' leading edges and windshield. He reported that three-quarters of the way to his destination the windshield was suddenly covered with rime ice, and that his destination was the closest airport. At the destination airport, he said the visibility was one-half to one mile in fog and freezing drizzle. On short final he reported that visibility was deteriorating, and he elected to go-around. He said the throttle did not respond, the engine lost power, and the airplane descended into trees. The pilot attributed the engine losing power to a combination of carburetor and induction icing. The pilot reported that there were no known mechanical problems with the airplane prior to the accident. He said during the accident the airplane received damage to the right wing and lift-strut, right aileron, and right elevator. Due to the remote location, the airplane was not examined by the National Transportation Safety Board.

NTSB Probable Cause

The pilot's continued flight into adverse weather (icing conditions), which resulted in a loss of engine power during a go-around. Factors contributing to the accident were icing conditions, and carburetor/induction icing.

Full Narrative

The commercial certificated pilot was conducting a solo cross-country flight in a tailwheel-equipped airplane under Title 14, CFR Part 91, when the accident occurred. He reported that he received a special VFR clearance at the departure airport, and as soon as he cleared class E airspace, the airplane started to accumulate rime ice on the wings' leading edges and windshield. He reported that three-quarters of the way to his destination the windshield was suddenly covered with rime ice, and that his destination was the closest airport. At the destination airport, he said the visibility was one-half to one mile in fog and freezing drizzle. On short final he reported that visibility was deteriorating, and he elected to go-around. He said the throttle did not respond, the engine quit, and the airplane descended into trees. The pilot attributed the engine quitting to a combination of carburetor and induction icing. The pilot reported that there were no known mechanical problems with the airplane prior to the accident. He said during the accident the airplane received damage to the right wing and lift-strut, right aileron, and right elevator. Due to the remote location, the airplane was not examined by the National Transportation Safety Board.

Flight

Event TypeAccident
Event Time05:45 AKST
Nearest Airport0nm
Flight Plan FiledVFR
Flight Plan ActivatedYes
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 170B
Tail NumberN170BP
Aircraft CategoryAir
DamageSubstantial
OperatorRichard Anselment
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · C-145 · Reciprocating · 145
Seats4

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 57 · Third Class · None

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility6 sm
CeilingOvercast 563 ft
Temperature / Dew Point-6 C / -13 C
Altimeter29.98 inHg
Weather SourcePILO

Appendix: Source Data