B737-800 experiences body and wing overheat EICAS message. Declare emergency and divert for maintena...

Attributes
ACN	719383
Time
Date	200612
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zzzz.tracon
State Reference	FO
Altitude	msl single value : 19000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	719383
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : eicas wing ovrht other flight crewa
Resolutory Action	flight crew : diverted to another airport flight crew : declared emergency
Consequence	other
Supplementary
Problem Areas	Maintenance Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

After takeoff; we got a left #1 wing body overheat light. The wing a/I was never in use. We ran the QRH and the light extinguished after a few mins. We declared an emergency and prepared for a precautionary divert. Accomplished emergency landing checklist and advised flight attendants. Visual approach. No further problems. Maintenance inspected all ducting for leakage and did a bite check. A loose clamp at the wing anti-ice was found. With APU bleed air and left pack on and wing anti-ice on; no overheat was noted. We then performed a ground engine run at 82% N1 for 2.5 mins off gate and no overheat noted. After departing climbing through FL170 again with no wing or engine anti-ice; we again got a left wing-body overheat light. Ran the QRH and light went out. With the concurrence of technician; we proceeded to destination at FL240; left pack off; engine #1 bleed off and isolation valve closed. We remained clear of icing conditions. Cruise; descent and landing was uneventful. Entered repeat item in the logbook for follow up.

Original NASA ASRS Text

Title: B737-800 EXPERIENCES BODY AND WING OVERHEAT EICAS MSG. DECLARE EMER AND DIVERT FOR MAINT. SUBSEQUENT TKOF EXPERIENCES REPEAT OF WARNING. CONTINUE TO DEST WITH CONCURRENCE OF MAINT.

Narrative: AFTER TKOF; WE GOT A L #1 WING BODY OVERHEAT LIGHT. THE WING A/I WAS NEVER IN USE. WE RAN THE QRH AND THE LIGHT EXTINGUISHED AFTER A FEW MINS. WE DECLARED AN EMER AND PREPARED FOR A PRECAUTIONARY DIVERT. ACCOMPLISHED EMER LNDG CHKLIST AND ADVISED FLT ATTENDANTS. VISUAL APCH. NO FURTHER PROBS. MAINT INSPECTED ALL DUCTING FOR LEAKAGE AND DID A BITE CHK. A LOOSE CLAMP AT THE WING ANTI-ICE WAS FOUND. WITH APU BLEED AIR AND L PACK ON AND WING ANTI-ICE ON; NO OVERHEAT WAS NOTED. WE THEN PERFORMED A GROUND ENG RUN AT 82% N1 FOR 2.5 MINS OFF GATE AND NO OVERHEAT NOTED. AFTER DEPARTING CLBING THROUGH FL170 AGAIN WITH NO WING OR ENG ANTI-ICE; WE AGAIN GOT A L WING-BODY OVERHEAT LIGHT. RAN THE QRH AND LIGHT WENT OUT. WITH THE CONCURRENCE OF TECHNICIAN; WE PROCEEDED TO DEST AT FL240; L PACK OFF; ENG #1 BLEED OFF AND ISOLATION VALVE CLOSED. WE REMAINED CLR OF ICING CONDITIONS. CRUISE; DSCNT AND LNDG WAS UNEVENTFUL. ENTERED REPEAT ITEM IN THE LOGBOOK FOR FOLLOW UP.

Data retrieved from NASA's ASRS site as of January 2009 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.

B737-800 experiences body and wing overheat EICAS message. Declare emergency and divert for maintenance. Subsequent takeoff experiences repeat of warning. Continue to destination with concurrence of maintenance.