A B757-200 was dispatched in non compliance with the #2 engine anti-ice valve in the closed position...

Attributes
ACN	604848
Time
Date	200401
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzzz.airport
State Reference	US
Environment
Flight Conditions	Marginal
Weather Elements	Ice
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	ground : parked ground : preflight ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	other personnel
ASRS Report	604848
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical maintenance problem : non compliance with mel maintenance problem : improper documentation non adherence : far non adherence : published procedure
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : manuals contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : inspection performance deficiency : logbook entry
Supplementary
Problem Areas	Maintenance Human Performance Chart Or Publication Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

The flight was scheduled to operate ZZZZ-ZZZ1. MEL 30-21-1-1 was active for the right engine anti-ice valve in the closed position, which required no operations into icing conditions. Icing conditions were expected at the destination airport and possibly en route. I advised our maintenance controllers that the flight could not operate with that MEL. I was then advised that a mechanic had mechanically opened the valve and the MEL had been changed to MEL 30-21-1-2 for the right engine anti-ice valve in the opened position. This new MEL would allow the flight to operate. The controller advised me that his computer system was not working and was not able to make the change electronically. I amended the flight release to reflect the new MEL 30-21-1-2 and advised the flight crew. At XA20Z, the flight crew sent an ACARS message asking about icing conditions at ZZZZ1. I confirmed with the crew that the correct MEL 30-21-1-2 was in the log/deferral book on board and that they were able to operate in icing condition because the anti-ice valve was mechanically opened. The crew agreed and we decided it was safe to continue to ZZZZ1. Upon arrival ZZZZ1, the crew had a mechanic confirm that the anti-ice valve had been opened. The mechanic at rctp advised the crew that the anti-ice valve was actually closed.

Original NASA ASRS Text

Title: A B757-200 WAS DISPATCHED IN NON COMPLIANCE WITH THE #2 ENG ANTI-ICE VALVE IN THE CLOSED POS. MEL REQUIRED VALVE INOP OPEN FOR ICING CONDITIONS.

Narrative: THE FLT WAS SCHEDULED TO OPERATE ZZZZ-ZZZ1. MEL 30-21-1-1 WAS ACTIVE FOR THE R ENG ANTI-ICE VALVE IN THE CLOSED POS, WHICH REQUIRED NO OPS INTO ICING CONDITIONS. ICING CONDITIONS WERE EXPECTED AT THE DEST ARPT AND POSSIBLY ENRTE. I ADVISED OUR MAINT CTLRS THAT THE FLT COULD NOT OPERATE WITH THAT MEL. I WAS THEN ADVISED THAT A MECH HAD MECHANICALLY OPENED THE VALVE AND THE MEL HAD BEEN CHANGED TO MEL 30-21-1-2 FOR THE R ENG ANTI-ICE VALVE IN THE OPENED POS. THIS NEW MEL WOULD ALLOW THE FLT TO OPERATE. THE CTLR ADVISED ME THAT HIS COMPUTER SYS WAS NOT WORKING AND WAS NOT ABLE TO MAKE THE CHANGE ELECTRONICALLY. I AMENDED THE FLT RELEASE TO REFLECT THE NEW MEL 30-21-1-2 AND ADVISED THE FLT CREW. AT XA20Z, THE FLT CREW SENT AN ACARS MESSAGE ASKING ABOUT ICING CONDITIONS AT ZZZZ1. I CONFIRMED WITH THE CREW THAT THE CORRECT MEL 30-21-1-2 WAS IN THE LOG/DEFERRAL BOOK ON BOARD AND THAT THEY WERE ABLE TO OPERATE IN ICING CONDITION BECAUSE THE ANTI-ICE VALVE WAS MECHANICALLY OPENED. THE CREW AGREED AND WE DECIDED IT WAS SAFE TO CONTINUE TO ZZZZ1. UPON ARR ZZZZ1, THE CREW HAD A MECH CONFIRM THAT THE ANTI-ICE VALVE HAD BEEN OPENED. THE MECH AT RCTP ADVISED THE CREW THAT THE ANTI-ICE VALVE WAS ACTUALLY CLOSED.

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.

A B757-200 was dispatched in non compliance with the #2 engine anti-ice valve in the closed position. MEL required valve inoperative open for icing conditions.