Narrative:

Aft cargo compartment sta 1852 all lateral guides inoperative electrically. MEL does not cover having 'all' inoperative. Guides were manually locked down and loading restrs were placarded in aircraft logbook. Maintenance controller authority/authorized deferral using MEL for '2 inoperative, both sides.' there are 6 guides total. MEL needs to be clarified to include or preclude condition that existed.

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Original NASA ASRS Text

Title: AN ACR B747 MECH AND HIS MAINT CTL SUPVR APPARENTLY DISAGREE ON THE INTERP OF THE MEL. ACFT EQUIP PROB AFT CARGO LATERAL GUIDES INOP ELECTRICALLY.

Narrative: AFT CARGO COMPARTMENT STA 1852 ALL LATERAL GUIDES INOP ELECTRICALLY. MEL DOES NOT COVER HAVING 'ALL' INOP. GUIDES WERE MANUALLY LOCKED DOWN AND LOADING RESTRS WERE PLACARDED IN ACFT LOGBOOK. MAINT CTLR AUTH DEFERRAL USING MEL FOR '2 INOP, BOTH SIDES.' THERE ARE 6 GUIDES TOTAL. MEL NEEDS TO BE CLARIFIED TO INCLUDE OR PRECLUDE CONDITION THAT EXISTED.

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.