A CL65 captain reported that the QRH does not completely address persistent wing overheat warnings, which caused him to make a single engine landing after diverting to jax in an emergency condition.

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Attributes
ACN	607646
Time
Date	200402
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : jax.airport
State Reference	FL
Altitude	msl bound lower : 6000 msl bound upper : 9000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : jax.tracon
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : multi engine pilot : atp
Experience	flight time last 90 days : 110 flight time total : 8800 flight time type : 1500
ASRS Report	607646
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : multi engine
Experience	flight time last 90 days : 120 flight time total : 4000 flight time type : 1300
ASRS Report	607804
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : overheat message alarm other flight crewa other flight crewb
Resolutory Action	flight crew : declared emergency flight crew : diverted to another airport flight crew : landed in emergency condition
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

On initial climb out, wing overheat message displayed. Selected anti-ice page. Noted right wing red. Performed QRH -- message remained. Not addressed in QRH. Reduced thrust on #2 engine. Warning extinguished. Closed all 14TH stage bleed valves and advanced thrust and the warning returned. Reduced thrust on #2 to idle -- warning persisted intermittently. Talked situation over with first officer and decided to perform single engine abnormal procedure to stop hot air flow to wing. Notified ATC, declared emergency, and advised of return to jax. Notified flight attendant, briefed her, made announcement to passenger. Upon engine shutdown, warning extinguished, crash fire rescue equipment requested. Performed single engine landing uneventfully. Deplaned normally. QRH does not address wing overheat warning that persists after procedure. Have no way to troubleshoot a malfunctioning sensor.

Original NASA ASRS Text

Title: A CL65 CAPT RPTED THAT THE QRH DOES NOT COMPLETELY ADDRESS PERSISTENT WING OVERHEAT WARNINGS, WHICH CAUSED HIM TO MAKE A SINGLE ENG LNDG AFTER DIVERTING TO JAX IN AN EMER CONDITION.

Narrative: ON INITIAL CLBOUT, WING OVERHEAT MESSAGE DISPLAYED. SELECTED ANTI-ICE PAGE. NOTED R WING RED. PERFORMED QRH -- MESSAGE REMAINED. NOT ADDRESSED IN QRH. REDUCED THRUST ON #2 ENG. WARNING EXTINGUISHED. CLOSED ALL 14TH STAGE BLEED VALVES AND ADVANCED THRUST AND THE WARNING RETURNED. REDUCED THRUST ON #2 TO IDLE -- WARNING PERSISTED INTERMITTENTLY. TALKED SIT OVER WITH FO AND DECIDED TO PERFORM SINGLE ENG ABNORMAL PROC TO STOP HOT AIR FLOW TO WING. NOTIFIED ATC, DECLARED EMER, AND ADVISED OF RETURN TO JAX. NOTIFIED FLT ATTENDANT, BRIEFED HER, MADE ANNOUNCEMENT TO PAX. UPON ENG SHUTDOWN, WARNING EXTINGUISHED, CFR REQUESTED. PERFORMED SINGLE ENG LNDG UNEVENTFULLY. DEPLANED NORMALLY. QRH DOES NOT ADDRESS WING OVERHEAT WARNING THAT PERSISTS AFTER PROC. HAVE NO WAY TO TROUBLESHOOT A MALFUNCTIONING SENSOR.

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.