Narrative:

We had an MEL on the aircraft for 1 anti-ice valve stuck open. After arriving at the gate and shutting down the engines; the outbound first officer; who had just done a walkaround; said the engine nacelle lips were hot on the side with the anti-ice valve stuck open. We turned off the APU bleed air to rectify the situation. Upon further review of the MEL; I found that the MEL procedure said that the engine bleed air switch should be turned off when APU air on and engines shut down. I think this was overlooked as the procedure was several pages after the MEL listing and was not readily apparent.

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Original NASA ASRS Text

Title: A B737 FO RPTED TO CAPT THAT 1 ENG HAD A HOT INLET COWL. ENG HAD COWL ANTI-ICE VALVE STUCK OPEN DEFERRED PER MEL. MEL SPECIAL PROC WITH APU SUPPLYING AIR THE ENG BLEED AIR SWITCH MUST BE OFF. FOUND ON.

Narrative: WE HAD AN MEL ON THE ACFT FOR 1 ANTI-ICE VALVE STUCK OPEN. AFTER ARRIVING AT THE GATE AND SHUTTING DOWN THE ENGS; THE OUTBOUND FO; WHO HAD JUST DONE A WALKAROUND; SAID THE ENG NACELLE LIPS WERE HOT ON THE SIDE WITH THE ANTI-ICE VALVE STUCK OPEN. WE TURNED OFF THE APU BLEED AIR TO RECTIFY THE SIT. UPON FURTHER REVIEW OF THE MEL; I FOUND THAT THE MEL PROC SAID THAT THE ENG BLEED AIR SWITCH SHOULD BE TURNED OFF WHEN APU AIR ON AND ENGS SHUT DOWN. I THINK THIS WAS OVERLOOKED AS THE PROC WAS SEVERAL PAGES AFTER THE MEL LISTING AND WAS NOT READILY APPARENT.

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.