|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||airport : zzz.airport|
|Altitude||agl single value : 0|
|Operator||common carrier : air carrier|
|Make Model Name||B757-200|
|Operating Under FAR Part||Part 121|
|Flight Phase||ground : maintenance|
ground : parked
|Affiliation||company : air carrier|
|Function||oversight : supervisor|
|Qualification||technician : airframe|
technician : powerplant
|Anomaly||aircraft equipment problem : critical|
maintenance problem : non compliance with mel
non adherence : published procedure
|Independent Detector||other other : 969|
|Maintenance||contributing factor : schedule pressure|
performance deficiency : testing
performance deficiency : fault isolation
performance deficiency : non compliance with legal requirements
|Problem Areas||Maintenance Human Performance|
|Primary Problem||Maintenance Human Performance|
Aircraft had been previously on jun/xa/99, had an MEL put on the center hydraulic quantity indication for the EICAS. Then on jun/xd/99 the center hydraulic system quantity reservoir light came on, so I put a placard for this light under MEL reference 29-13B. I didn't quite understand the MEL procedures for MEL 29-13 -- which had the mechanic also verify on the eidas, the indication for the quantity, which was on a different MEL placard jun/xa/99 under MEL reference 29-11. The thought it meant you could use either/or procedure to verify it.
Original NASA ASRS Text
Title: A B757-200 WAS DISPATCHED IN NON COMPLIANCE WITH 2 DEFERRED ITEMS BOTH IN CONFLICT WITH THE MEL SPECIAL PROCS.
Narrative: ACFT HAD BEEN PREVIOUSLY ON JUN/XA/99, HAD AN MEL PUT ON THE CTR HYD QUANTITY INDICATION FOR THE EICAS. THEN ON JUN/XD/99 THE CTR HYD SYS QUANTITY RESERVOIR LIGHT CAME ON, SO I PUT A PLACARD FOR THIS LIGHT UNDER MEL REF 29-13B. I DIDN'T QUITE UNDERSTAND THE MEL PROCS FOR MEL 29-13 -- WHICH HAD THE MECH ALSO VERIFY ON THE EIDAS, THE INDICATION FOR THE QUANTITY, WHICH WAS ON A DIFFERENT MEL PLACARD JUN/XA/99 UNDER MEL REF 29-11. THE THOUGHT IT MEANT YOU COULD USE EITHER/OR PROC TO VERIFY IT.
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.