Aircraft Accident/Incident Report

Tyonek, Alaska 99682
Wednesday, April 27, 1988 13:18 AKD

NTSB Narrative Summary Released at Completion of Accident

THE TWO PILOTS WERE OPERATING THE AIRCRAFT UNDER THE AUTHORITY OF A FERRY PERMIT WHICH ALLOWED FLT ONLY DURING DAY VFR CONDITIONS AND WITH A SINGLE PILOT. THEY REQUESTED AND RECEIVED JUST THE WEATHER AT THE DESTINATION AIRPORT, WHICH WAS VMC. EN ROUTE THE FLT ENCOUNTERED IMC OVER A MOUNTAIN RANGE. RADAR RETURNS INDICATED THAT AS THE WEATHER WAS ENCOUNTERED, THE FLIGHT DEVIATED FROM THE ASSIGNED AIRWAY, AND FOLLOWED MOUNTAIN PASSES. ATTEMPTS TO CONTACT THE PILOT SHORTLY AFTER HE LEFT THE ASSIGNED AIRWAY WERE UNSUCCESSFUL. THE AIRCRAFT WAS FOUND AT THE 10,600 ELEVATION OF A 11,413 FOOT MT, 30 MILES SOUTH OF COURSE. WEATHER IN THE AREA WAS IMC WITH MODERATE TO HEAVY ICING REPORTED SHORTLY AFTER THE ACCIDENT.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 4/27/1988
Event Day of the Week Wednesday
Time of Event 1318
Event Time Zone --
Event City TYONEK
Event State ALASKA
Event Country --
Zipcode of the event site 99682
Event Date Year 1988
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
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 --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1250 Atlantic Daylight Time
Direction of event from weather observation facility (degrees) 105
Weather Observation Facility ID ANC
Elevation of weather observation facility 144
Distance of event from weather observation facility (units?) 75
Time Zone of the weather observation ADT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Unknown
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 0
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 1029
NTSB Notification Source --
NTSB Notification Date Apr 27 1988 12:00AM
NTSB Notification Time 1322
Fiche Number and/or location -used to find docket information 37037
Date of most recent change to record Dec 13 2000 11:39AM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N2730T
NTSB Number ANC88FA051
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BEECH
Aircraft Model C55
Aircraft Series Identifier C55
Aircraft Serial Number TE 375
Certified Max Gross Weight 5300
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 6
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Yes
ELT Type --
Aircraft Owner Name GALENA AIR SERVICE
Aircraft Owner Street Address P.O. BOX 188
Aircraft Owner City GALENA
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99741
Operator is an individual? --
Operator Name GALENA AIR SERVICE
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address P.O. BOX 188
Operator City GALENA
Operator State AK
Operator Country
Operator Zip code 99741
Operator Code FXXA
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 --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Ferry
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code GAL
Departure City GALENA
Departure State AK
Departure Country
Departure Time 1139
Departure Time Zone ADT
Destination Same as Local Flt --
Destination Airport Code MRI
Destination City ANCHORAGE
Destination State AK
Destination Country
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
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 --