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ASN Wikibase Occurrence # 37224
Last updated: 27 August 2020
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Date:20-DEC-1986
Time:11:30
Type:Silhouette image of generic M20T model; specific model in this crash may look slightly different
Mooney M20K
Owner/operator:private
Registration: N4004H
C/n / msn: 25-0403
Fatalities:Fatalities: 1 / Occupants: 2
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Flagstaff, AZ -   United States of America
Phase: Landing
Nature:Private
Departure airport:Long Beach, CA (LGB)
Destination airport:Garden City, KS (GCK)
Investigating agency: NTSB
Narrative:
THE PILOT ENCOUNTERED CLOUDS AND TEMPERATURES BELOW FREEZING DURING A CROSS COUNTRY FLIGHT AT 17,500 FEET ABOVE MEAN SEA LEVEL. THE ENGINE FAILED SHORTLY AFTER THE ENCOUNTER WITH THE WEATHER. THE PILOT WAS UNABLE TO RESTART THE ENGINE DURING THE FORCED LANDING DESCENT AND COLLIDED WITH THE TERRAIN AT AN ELEVATION OF 6110 FEET MSL. AN EXAMINATION OF THE ENGINE ENDUCTION SYSTEM REVEALED A COATING OF GLOBULAR ICE FORMATION AND CRYSTALS ON THE INDUCTION AIR FILTER. THE ALTERNATE AIR DOOR WAS CLOSED AND THE ALTERNATE AIR CONTROL WAS IN THE FILTERED POSITION. CAUSE:

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
•FUEL SYSTEM,RAM AIR/INDUCTION AIR..BLOCKED(TOTAL)
•FLIGHT MANUALS..NOT FOLLOWED..PILOT IN COMMAND
•FUEL SYSTEM,RAM AIR/INDUCTION AIR..ICE
•INDUCTION AIR CONTROL/SYSTEM..NOT SWITCHED
Contributing Factors:
•TERRAIN CONDITION..ROUGH/UNEVEN
•WEATHER CONDITION..SNOW
•IN-FLIGHT BRIEFING SERVICE..NOT OBTAINED..PILOT IN COMMAND

Full narrative is not available

Sources:

NTSB: https://www.ntsb.gov/ntsb/brief.asp?ev_id=20001213X35374
NTSB: https://www.ntsb.gov/investigations/AccidentReports/_layouts/ntsb.aviation/brief.aspx?ev_id=20001213X35374&key=1


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
21-Dec-2016 19:23 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
09-Jan-2017 16:35 hmcgrory Updated [Source, Narrative]

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