ANC89LA031

NTSB accident investigation · Cessna 207A · Russian Mission, AK · January 3, 1989

Accident · No injuriesLimited investigationFinal report
Date
January 3, 1989, 15:40 local (19:40 UTC)
Place
Russian Mission, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N7329UCessna 207A
Weather
Visual (VMC) · Day
Status
Completed · report September 28, 1990
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19890103000159A
Case key
5158

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

On this page

Probable cause

The partial engine power loss due to undetermined reasons. Contributing to the accident was the pilot's improper inflight planning by flying at a traffic pattern altitude insufficient to insure a safe emergency landing either on or off the airport and his misjudgement of clearance above the frozen river.

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.

Loss of engine power(partial) - nonmechanicalApproach - vfr pattern - downwind
Powerplant - failure,partialCause
In-flight planning/decision - improperPilot in commandFactor
Forced landingDescent - emergency
Dragged wing,rotor,pod,float or tail/skidLanding - flare/touchdown
Maneuver - improperPilot in command

Analysis

The commercial air taxi pilot and his passenger were uninjured following a forced landing. The pilot said that he had flown over his intended landing site at Russian Mission, AK., to inspect the runway. On the downwind leg, the engine of Cessna 207 lost most of its power. He was unable to restore sufficient power to remain airborne and elected to land on the nearby, frozen, yukon river. He said that he misjudged his altitude during the landing approach due to the featureless, all white surface of the river, and struck the surface while still in a slight right turn. Inspection of the crash site two days after the accident revealed numerous ice crystals in the left fuel tank sump. No other obvious abnormalities were noted. It is unknown if the ice crystals found in the fuel tank were contributory to the accident due to the length of time between the sample and the accident.

Aircraft

Registration
N7329U
Reported as
Cessna 207A
Category
Airplane
Serial number
20700403
Engine
Continental IO-520, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Ryan Air
Registered owner
Ryan Air, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · December 18, 1988
Departed
KLG · Kalskag, AK
Destination
RSH · Russian Mission, AK
Flight plan
Company VFR
Airport
RSH

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
33
Certificate
Airline transport
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
4,650 total · 2,205 in this make and model · 4,020 as pilot in command · 240 in the last 90 days · 71 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
3 statute miles
Lowest ceiling
700 ft overcast
Temperature
28 °F

FAA reports on this event · 1

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

Other investigations on N7329U · 1

Matched to the same aircraft by N-number and date.