<< >> NASA ASRS Report 564717, November 2002

A canadair CL65 diverted due to right cowling anti-ice valve failure previous to descending through icing conditions.

Attributes
ACN	564717
Time
Date	200211
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : flm.vor
State Reference	KY
Altitude	msl single value : 10000
Environment
Flight Conditions	VMC
Weather Elements	Ice
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : cvg.tracon
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other other vortac
Flight Phase	descent : approach
Route In Use	arrival star : sweed 6
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 5290 flight time type : 2945
ASRS Report	564717
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : anti-ice caution light other flight crewa other flight crewb
Resolutory Action	controller : provided flight assist flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Arriving cvg along the sweed six STAR at approximately 10000 ft in VMC above a solid undercast that stretched as far as the eye could see in every direction, we selected our wing and cowl anti-ice system on in preparation for entering the reported icing conditions below. However, we received a right cowl anti-ice caution message. We coordinated with ATC to remain VMC above the clouds while completing the abnormal procedures checklist. We then called maintenance control, but they had no ideas about how to alleviate the problem. Unable to enter icing conditions, we consulted with dispatch to find a VMC diversionary airport. Ind was chosen. We proceeded uneventfully to ind where our passenger were deplaned at the gate and contract maintenance determined that the cowl anti-ice valve had failed.

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Original NASA ASRS Text

Title: A CANADAIR CL65 DIVERTED DUE TO R COWLING ANTI-ICE VALVE FAILURE PREVIOUS TO DSNDING THROUGH ICING CONDITIONS.

Narrative: ARRIVING CVG ALONG THE SWEED SIX STAR AT APPROX 10000 FT IN VMC ABOVE A SOLID UNDERCAST THAT STRETCHED AS FAR AS THE EYE COULD SEE IN EVERY DIRECTION, WE SELECTED OUR WING AND COWL ANTI-ICE SYS ON IN PREPARATION FOR ENTERING THE RPTED ICING CONDITIONS BELOW. HOWEVER, WE RECEIVED A R COWL ANTI-ICE CAUTION MESSAGE. WE COORDINATED WITH ATC TO REMAIN VMC ABOVE THE CLOUDS WHILE COMPLETING THE ABNORMAL PROCS CHKLIST. WE THEN CALLED MAINT CTL, BUT THEY HAD NO IDEAS ABOUT HOW TO ALLEVIATE THE PROB. UNABLE TO ENTER ICING CONDITIONS, WE CONSULTED WITH DISPATCH TO FIND A VMC DIVERSIONARY ARPT. IND WAS CHOSEN. WE PROCEEDED UNEVENTFULLY TO IND WHERE OUR PAX WERE DEPLANED AT THE GATE AND CONTRACT MAINT DETERMINED THAT THE COWL ANTI-ICE VALVE HAD FAILED.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.