<< >> NASA ASRS Report 710759, September 2006

An MD10-30 was found to have a missing cargo container lock. Maintenance controller refused to allow deferral of lock due to believing this lock was deferred before and was out of time. Aircraft rerouted to maintenance station.

Attributes
ACN	710759
Time
Date	200609
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-10 Conversion
Operating Under FAR Part	Part 121
Flight Phase	ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	710759
Person 2
Affiliation	company : air carrier
Function	maintenance : lead technician
Events
Anomaly	maintenance problem : improper documentation non adherence : published procedure non adherence : far
Independent Detector	other other : 2
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : schedule pressure contributing factor : non availability of parts contributing factor : manuals performance deficiency : non compliance with legal requirements performance deficiency : repair
Supplementary
Problem Areas	Environmental Factor Maintenance Human Performance Aircraft Chart Or Publication
Primary Problem	Maintenance Human Performance

Narrative:

Load crew was loading aircraft. Found a missing container lock. We deferred lock. After aircraft blocked went to maintenance office to complete paperwork with maintenance control. Maintenance control said this was deferred before and could not be again. Aircraft had just flown in from ZZZ1-ZZZ. Why is this not a good leg? Floor lock was deferred and it went out of time 10 days later. ZZZ1 maintenance changed the lock after a B check. It came to ZZZ and the lock was not in its position. Missing lock was properly deferred and weight in position was limited for the missing lock. Maintenance control refused to give MEL on lock citing MEL overfly. So; aircraft with write-up flies on leg to ZZZ. Our company allows in cockpit deferrals on paper; then confirm on computer later. This would be caught if we were forced to contact maintenance control each MEL no matter when the plane leaves. Maintenance in ZZZ1 changed wrong lock. We did not check history to see if it was MEL'ed prior. Our company has bad procedures and won't change them.

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Original NASA ASRS Text

Title: AN MD10-30 WAS FOUND TO HAVE A MISSING CARGO CONTAINER LOCK. MAINT CTLR REFUSED TO ALLOW DEFERRAL OF LOCK DUE TO BELIEVING THIS LOCK WAS DEFERRED BEFORE AND WAS OUT OF TIME. ACFT REROUTED TO MAINT STATION.

Narrative: LOAD CREW WAS LOADING ACFT. FOUND A MISSING CONTAINER LOCK. WE DEFERRED LOCK. AFTER ACFT BLOCKED WENT TO MAINT OFFICE TO COMPLETE PAPERWORK WITH MAINT CTL. MAINT CTL SAID THIS WAS DEFERRED BEFORE AND COULD NOT BE AGAIN. ACFT HAD JUST FLOWN IN FROM ZZZ1-ZZZ. WHY IS THIS NOT A GOOD LEG? FLOOR LOCK WAS DEFERRED AND IT WENT OUT OF TIME 10 DAYS LATER. ZZZ1 MAINT CHANGED THE LOCK AFTER A B CHK. IT CAME TO ZZZ AND THE LOCK WAS NOT IN ITS POS. MISSING LOCK WAS PROPERLY DEFERRED AND WT IN POS WAS LIMITED FOR THE MISSING LOCK. MAINT CTL REFUSED TO GIVE MEL ON LOCK CITING MEL OVERFLY. SO; ACFT WITH WRITE-UP FLIES ON LEG TO ZZZ. OUR COMPANY ALLOWS IN COCKPIT DEFERRALS ON PAPER; THEN CONFIRM ON COMPUTER LATER. THIS WOULD BE CAUGHT IF WE WERE FORCED TO CONTACT MAINT CTL EACH MEL NO MATTER WHEN THE PLANE LEAVES. MAINT IN ZZZ1 CHANGED WRONG LOCK. WE DID NOT CHK HISTORY TO SEE IF IT WAS MEL'ED PRIOR. OUR COMPANY HAS BAD PROCS AND WON'T CHANGE THEM.

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.