Aircraft Accident/Incident Report

Russian Mission, Alaska 99657
Tuesady, January 3, 1989 15:40 AST

NTSB Narrative Summary Released at Completion of Accident

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.

NTSB Probable Cause Narrative

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.

Event Information

Type of Event Accident
Event Date 1/3/1989
Event Day of the Week Tuesday
Time of Event 1540
Event Time Zone Atlantic Standard Time
Event City RUSSIAN MISSION
Event State ALASKA
Event Country --
Zipcode of the event site 99657
Event Date Year 1989
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID RSH
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 70
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 700
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 3
Air Temperature at event time (in degrees celsius) -2
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Light
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 3
NTSB Notification Source --
NTSB Notification Date Jan 3 1989 12:00AM
NTSB Notification Time 1650
Fiche Number and/or location -used to find docket information 38259
Date of most recent change to record Dec 13 2000 12:24PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7329U
NTSB Number ANC89LA031
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 207A
Aircraft Series Identifier 207A
Aircraft Serial Number 20700403
Certified Max Gross Weight 3800
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 7
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection AAIP
Date of Last Inspection Dec 18 1988 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name RYAN AIR, INC.
Aircraft Owner Street Address 1205 E INT'L. AIRPORT ROAD
Aircraft Owner City ANCHORAGE
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99518
Operator is an individual? --
Operator Name RYAN AIR
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 1205 E. INT'L AIRPORT ROAD
Operator City ANCHORAGE
Operator State AK
Operator Country
Operator Zip code 99502
Operator Code UATA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code KLG
Departure City KALSKAG
Departure State AK
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt crash at destination city
Destination Airport Code RSH
Destination City RUSSIAN MISSION
Destination State AK
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --