Aircraft Accident/Incident Report

Ogden, Utah 84401
Saturday, April 12, 1986 16:30 MST

NTSB Narrative Summary Released at Completion of Accident

ACFT WAS EN ROUTE TO SLC WHERE IT WAS TO BE PUT ON STATIC DISPLAY WITH OTHER ACFT EQUIPPED WITH SOLOY-CONVERSIONS (ALLISON 250-C20S TURBOSHAFT ENGINE INSTALLATION). DURING DESCENT THROUGH 12,000 FT INTO SLC AREA ENG FLAMED OUT AND THE PROP AUTO-FEATHERED. PLT RESTARTED ENG BUT WHEN HE TRIED TO ADVANCE POWER ENG SURGED AND QUIT. PLT RESTARTED ENG AND TURNED ON ENG ANTI-ICE. WHEN POWER WAS ADVANCED ENG SURGED AND QUIT. PLT RESTARTED ENG. HE APPLIED ALTERNATE AIR. WHEN POWER WAS ADVANCED ENG SURGED AND POWER DROPPED TO IDLE. PLT TURNED OFF ENG ANTI-ICE AND ALTERNATE AIR, PULLED AUTO FEATHER CIRCUIT BREAKER, SWITCHED START/MOTOR SWITCH TO START, AN TRIED TO ADVANCE POWER. ENG CONTINUED TO SURGE. PLT MADE FORCED LANDING ON MUD FLAT IN GREAT SALT LAKE. DISASSEMBLY/EXAMINATION OR CHECK/TEST ENG, FUEL CONTROL, POWER TURBINE GOVERNOR, AND FUEL REVEALED NO DISCREPANCIES. EXAMINATION OF FUEL FLOW TRANSDUCER REVEALED PARTIAL BLOCKAGE. BLOCKAGE WAS BLOWN OUT AND NEVER FOUND AND COULD NOT BE IDENTIFIED.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 4/12/1986
Event Day of the Week Saturday
Time of Event 1630
Event Time Zone Mountain Standard Time
Event City OGDEN
Event State UTAH
Event Country --
Zipcode of the event site 84401
Event Date Year 1986
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 15
Degrees magnetic from airport 295
Airport Elevation --
Weather Briefing Completeness Full
Investigator's weather source Pilot
Time of the weather observation 1650 Mountain Standard Time
Direction of event from weather observation facility (degrees) 115
Weather Observation Facility ID OGD
Elevation of weather observation facility 4473
Distance of event from weather observation facility (units?) 13
Time Zone of the weather observation MST
Lighting Conditions Day
Lowest Ceiling Height 12000
Lowest Non-Ceiling Height 7000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 40
Air Temperature at event time (in degrees celsius) 19
Dew Point at event time (in degress fahrenheit) 1
Wind Direction (degrees magnetic) 160
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) 6678
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 800
NTSB Notification Source --
NTSB Notification Date Apr 12 1986 12:00AM
NTSB Notification Time 1818
Fiche Number and/or location -used to find docket information 31144
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1721Q
NTSB Number DEN86FA115
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
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 20700784
Certified Max Gross Weight 4000
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jan 24 1986 12:00AM
Airframe hours since last inspection 66
Airframe Hours 329
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name
Aircraft Owner Street Address
Aircraft Owner City
Aircraft Owner State
Aircraft Owner Country
Aircraft Owner Zipcode
Operator is an individual? --
Operator Name SOLOY CONVERSION, LTD
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 450 PAT KENNEDY WAY SW.
Operator City OLYMPIA
Operator State WA
Operator Country
Operator Zip code 98502
Operator Code
Owner has at least one certificate None
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) Business
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code BOI
Departure City BOISE
Departure State ID
Departure Country
Departure Time 1330
Departure Time Zone MST
Destination Same as Local Flt --
Destination Airport Code SLC
Destination City SALT LAKE CITY
Destination State UT
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:36AM
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 --