Narrative:

Aircraft X had an MEL (antiskid fault status message) upon arrival in ZZZ1; flight Y; this MEL was cleared in ZZZ1 prior to departure to ZZZ2; flight X; by replacing the antiskid control unit. During the flight (X); pilot reported an antiskid fault status message. I informed the pilot the plan was to defer the antiskid. At that time; dispatch was brought into the loop and it was decided to divert to ZZZ. I called out local maintenance; and we placed the antiskid on MEL in accordance with MEL. Jan/tue/07: ZZZ3 maintenance cleared MEL during the night of jan/mon/07. Upon departure from ZZZ3; the antiskid fault status message recurred and the maintenance controller placed the system on MEL again. When I came on shift at approximately XA00 jan/tue/07; I was made aware that air carrier X had been re-MEL'ed. Later in the evening; flight operations came in and we discussed why flight X diverted to ZZZ the previous day. During this discussion I became aware there was a list of EICAS messages in the crj emergency/abnormal checklist. I reviewed this list; but it did not have a column titled 'message impact.' I then had a discussion with maintenance technician department; and he brought to my attention the EICAS message list was in the manual. We looked up the status messages and discovered the antiskid fault status message was a 'no dispatch' message. At this time; aircraft was in ZZZ3 for the routine overnight; and I informed ZZZ3 maintenance that this MEL must be cleared prior to dispatch on the morning of jan/wed/07. I also sent an e-mail to all maintenance controller advising them not to utilize MEL for an antiskid fault status message.

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Original NASA ASRS Text

Title: A CL600 WAS DISPATCHED WITH THE ANTISKID FAULT STATUS MESSAGE DISPLAY DEFERRED AS INOP. MAINT CTLR DEFERRED 1 ANTISKID CHANNEL. WARNING DISPLAY IS NOT A DEFERRABLE ITEM.

Narrative: ACFT X HAD AN MEL (ANTISKID FAULT STATUS MESSAGE) UPON ARR IN ZZZ1; FLT Y; THIS MEL WAS CLRED IN ZZZ1 PRIOR TO DEP TO ZZZ2; FLT X; BY REPLACING THE ANTISKID CTL UNIT. DURING THE FLT (X); PLT RPTED AN ANTISKID FAULT STATUS MESSAGE. I INFORMED THE PLT THE PLAN WAS TO DEFER THE ANTISKID. AT THAT TIME; DISPATCH WAS BROUGHT INTO THE LOOP AND IT WAS DECIDED TO DIVERT TO ZZZ. I CALLED OUT LCL MAINT; AND WE PLACED THE ANTISKID ON MEL IN ACCORDANCE WITH MEL. JAN/TUE/07: ZZZ3 MAINT CLRED MEL DURING THE NIGHT OF JAN/MON/07. UPON DEP FROM ZZZ3; THE ANTISKID FAULT STATUS MESSAGE RECURRED AND THE MAINT CTLR PLACED THE SYS ON MEL AGAIN. WHEN I CAME ON SHIFT AT APPROX XA00 JAN/TUE/07; I WAS MADE AWARE THAT ACR X HAD BEEN RE-MEL'ED. LATER IN THE EVENING; FLT OPS CAME IN AND WE DISCUSSED WHY FLT X DIVERTED TO ZZZ THE PREVIOUS DAY. DURING THIS DISCUSSION I BECAME AWARE THERE WAS A LIST OF EICAS MESSAGES IN THE CRJ EMER/ABNORMAL CHKLIST. I REVIEWED THIS LIST; BUT IT DID NOT HAVE A COLUMN TITLED 'MESSAGE IMPACT.' I THEN HAD A DISCUSSION WITH MAINT TECHNICIAN DEPT; AND HE BROUGHT TO MY ATTN THE EICAS MESSAGE LIST WAS IN THE MANUAL. WE LOOKED UP THE STATUS MESSAGES AND DISCOVERED THE ANTISKID FAULT STATUS MESSAGE WAS A 'NO DISPATCH' MESSAGE. AT THIS TIME; ACFT WAS IN ZZZ3 FOR THE ROUTINE OVERNIGHT; AND I INFORMED ZZZ3 MAINT THAT THIS MEL MUST BE CLRED PRIOR TO DISPATCH ON THE MORNING OF JAN/WED/07. I ALSO SENT AN E-MAIL TO ALL MAINT CTLR ADVISING THEM NOT TO UTILIZE MEL FOR AN ANTISKID FAULT STATUS MESSAGE.

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.