Salt Lake Int'l Airport
Aircraft Accident/Incident Report

Salt Lake City, Utah 84116
Monday, December 15, 1986 19:27 MST

NTSB Narrative Summary Released at Completion of Accident

THE F/O WAS AT THE CONTROLS FOR THE ILS APCH TO SLC. FOG SEEDING WAS IN PROGRESS, PRODUCING VARIABLE VISIBILITIES. THE APCH COMMENCED WITH RVR WELL ABOVE CAT I MINS. AT DECISION HEIGHT(DH), THE CAPT CALLED 'LIGHTS IN SITE'. THE F/O CONTINUED THE APCH DESCENT THRU DH. THE ACFT THEN REENTERED IMC AND THE CAPT CALLED FOR MISSED APCH. THE F/O ADDED PWR AND ESTABLISHED A WINGS LEVEL, 10 DEG NOSE-UP ATTITUDE ON THE GYRO HORIZON AS THE CAPT EXECUTED CHECK LIST ITEMS. THE CAPT THEN NOTED THE ACFT WAS HEADING 20 DEGS RIGHT OF COURSE AND THE RIGHT WING DOWN ATTITUDE ON HIS GYRO HORIZON AT WHICH TIME HE CALLED 'TURN LEFT AND PULL UP.' THE ACFT LEFT MAIN LANDING GEAR CONTACTED A 45 FT HIGH ILS ANTENNA STACK 1049 FT DOWN THE RWY, 400 FT RIGHT OF CENTERLINE. THIS SEPARATED THE LEFT MAIN GEAR. THE ACFT DIVERETED TO PIH WHERE ADDITIONAL DAMAGE WAS SUSTAINED DURING LANDING. TESTS SHOWED THE F/O GRYO HORIZON HAD BAD BEARINGS AND THE 'OFF' FLAG WAS INOP. THE F/O'S ALTIMETER ALSO READ 100 FT HIGH.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 12/15/1986
Event Day of the Week Monday
Time of Event 1927
Event Time Zone Mountain Standard Time
Event City SALT LAKE CITY
Event State UTAH
Event Country --
Zipcode of the event site 84116
Event Date Year 1986
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport SALT LAKE INT'L
Event Location Nearest Airport ID SLC
Indicates whether the acc/inc occurred off or on an airport Unknown
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 4227
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1951 Mountain Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID SLC
Elevation of weather observation facility 4227
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation MST
Lighting Conditions Night/Dark
Lowest Ceiling Height 200
Lowest Non-Ceiling Height 200
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Obscured
Visibility Runway Visual Range (Feet) 600
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 0
Air Temperature at event time (in degrees celsius) -3
Dew Point at event time (in degress fahrenheit) -4
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Variable
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
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 4
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 2068
NTSB Notification Source --
NTSB Notification Date Dec 15 1986 12:00AM
NTSB Notification Time 2005
Fiche Number and/or location -used to find docket information 32602
Date of most recent change to record Sep 25 2006 4:04PM
User who most recently changed record NTSB\ZUZL
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N164SW
NTSB Number SEA87FA036
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name SWEARINGEN
Aircraft Model SA227AC
Aircraft Series Identifier SA227AC
Aircraft Serial Number 503
Certified Max Gross Weight 14500
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 21
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Dec 13 1986 12:00AM
Airframe hours since last inspection 21
Airframe Hours 11586
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name GENERAL ELEC. CREDIT CORP.
Aircraft Owner Street Address P.O. BOX 8300
Aircraft Owner City STANFORD
Aircraft Owner State CT
Aircraft Owner Country
Aircraft Owner Zipcode 06904
Operator is an individual? --
Operator Name SKYWEST AIRLINES, INC.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 50E 100S SUITE 200
Operator City ST. GEORGE
Operator State UT
Operator Country
Operator Zip code 84770
Operator Code SWIA
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 Yes
Departure Point Same as Event No
Departure Airport Code IDH
Departure City IDAHO FALLS
Departure State ID
Departure Country
Departure Time 1838
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 Approach
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 34L
Runway Length 12003
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --