ANC86FA014

NTSB accident investigation · Cessna C-207 · Napaskiak, AK · December 15, 1985

Accident · Serious injuriesField investigationFinal report
Date
December 15, 1985, 14:45 local (18:45 UTC)
Place
Napaskiak, AK
Injuries
4 serious
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N6497HCessna C-207
Weather
Instrument (IMC) · Day
Status
Completed
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19851215062119A
Case key
4585

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight encounter with weatherApproach
Weather condition - fogFactor
Pitot system - improper use ofPilot in commandFactor
Weather condition - icing conditionsFactor
Preflight planning/preparation - not performedPilot in commandCause
Weather condition - low ceilingFactor
In-flight planning/decision - poorPilot in commandCause
Vfr flight into imc - attemptedPilot in commandCause
Weather evaluation - disregardedPilot in commandCause
Window,flight compartment window/windshield - iceCause
Flight into known adverse weather - continuedPilot in commandCause
Weather evaluation - inadequateDispatcherFactor
In flight collision with terrain/waterManeuvering
Judgment - poorPilot in commandCause
Terrain condition - snow covered
Procedures/directives - not followedPilot in commandCause
Light condition - duskFactor
Overconfidence in personal abilityPilot in commandCause
Pressure induced by othersPilot in commandCause
Inadequate surveillance of operationCompany/operator mgmtCause
Inadequate surveillance of operationFaa(organization)Cause

Analysis

According to the pilot-in-command, the weather at his destination was deteriorating so he diverted to Napaskiak where he encountered freezing drizzle rain and fog. While attempting to align himself with the runway for a landing to the south, the windshield iced over so he was unable to keep the runway in sight. He decided to leave the area in search of better weather so he added power and the airplane crashed.

Aircraft

Registration
N6497H
Reported as
Cessna C-207
Category
Airplane
Serial number
20700545
Airframe hours
6,353
Engine
Teledyne Cont IO-520-F, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Ryan Air Service
Registered owner
Ryan Air Service
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · December 5, 1985 · 64 hours before
Departed
DUY · Kongiganak, AK
Destination
BET · Bethel, AK
Flight plan
Company VFR
Airport
PKA · Napaskiak, runway 19, 2,400 × 45 ft, snow

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
35
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
2,568 total · 2,000 in this make and model · 2,411 as pilot in command · 399 in the last 90 days · 8 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Visibility
5 statute miles
Lowest ceiling
300 ft overcast
Temperature
25 °F, dew point 21 °F
Altimeter
29.00 inHg
Observed at
BET, 5 nm away

FAA reports on this event · 1

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