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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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February 8, 1994 · Cessna 207 · N6470H

Kwigillingok, AK

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
February 8, 1994
Injury Outcomes
No injuries (6 uninjured)
Location
Kwigillingok, AK
Aircraft
Cessna 207
Tail Number
N6470H
Operator
Yute Air Alaska
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC94LA031

THE PILOT OF A SCHEDULED PART 135 COMMUTER FLIGHT WAS ATTEMPTING TO LAND AT A FOG SHROUDED AIRPORT ON A 2500 X 25 FT RUNWAY. WHEN THE PILOT VISUALLY ACQUIRED THE RUNWAY, IT WAS 100 FEET TO HIS LEFT. THE PILOT INADVERTENTLY STALLED THE AIRPLANE WHILE ATTEMPTING TO ALIGN THE PLANE WITH THE RUNWAY.

NTSB Probable Cause

THE PILOT-IN-COMMAND'S FAILURE TO MAINTAIN THE PROPER AIRSPEED WHICH RESULTED IN AN INADVERTENT STALL AND HIS FAILURE TO INITIATE A GO-AROUND WHEN THE RUNWAY ENVIRONMENT WAS NOT CLEARLY DEFINED. A FACTOR IN THE ACCIDENT WAS THE FOG.

Full Narrative

On February 8, 1994, at approximately 1705 Alaska standard time, a wheel equipped Cessna 207 airplane, N6470H, owned and operated by Yute Air Alaska, collided with runway 33 during a landing attempt at Kwigillingok, Alaska. The airline transport certificated pilot-in-command and the five revenue passengers on board were not injured and the airplane sustained substantial damage. The scheduled commuter flight, conducted under 14 CFR Part 135 and operating as Flight 532, last departed Bethel, Alaska, at 1610 and the destination was Kwigillingok. Visual meteorological conditions prevailed in the general area of the accident site and a company VFR flight plan was in effect. During a telephone interview on the afternoon of February 10, 1994, the pilot-in-command informed the NTSB investigator-in- charge that there were patches of fog along the approach corridor to the airport and that the runway environment was obscured. The inflight visibility outside the airport traffic pattern area was from two to five miles. The visibility over the approach end of the runway and along the direct approach corridor to the runway was approximately one mile. At an altitude of about 400 feet above the ground and approximately 1 1/2 miles from the runway threshold, he maneuvered the airplane to the right of a fog bank and took up a heading that paralleled the runway. When he visually acquired the runway, it was about 100 feet to his left. By this time, he had selected and gotten full extension of the plane's wing flaps. He then throttle the plane's engine to idle and made a left turn towards the runway using approximately 25 to 30 degrees of bank. He overshot the runway centerline and initiated a right banking turn of about 25 to 30 degrees to align the airplane with the runway. While performing the turn, the airplane stalled and the right wing collided with the runway. The toxological results on the pilot were negative.

Flight

Event TypeAccident
Event Time12:00 AKST
Nearest AirportKwigillingok (0nm N)
Runway33
Runway Length2500 ft
Runway Width25 ft
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 207
Tail NumberN6470H
Aircraft CategoryAir
DamageSubstantial
OperatorYute Air Alaska
Operating RulePart 135
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-F · Reciprocating · 300
Seats7

People & Injuries

Injury SummaryNo injuries (6 uninjured)
Fatal0
Serious0
Minor0
Uninjured6
Total6
Crew 1Age 24 · First Class

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility1 sm
CeilingBroken clouds 800 ft
Temperature / Dew Point30 C / 0 C
Altimeter0
Observation Time21:45
Weather SourcePILO

Appendix: Source Data