NTSB sier blant annet:
Quote:
Using the same
reasoning, at least one lubrication, and possibly more, must also have been missed entirely
or inadequately performed on the jackscrew assemblies on N981AS and N982AS. This
indicates either poor training in this task or poor supervision of maintenance personnel
performing this task.
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og
Quote:
On July 19, 2002, Alaska Airlines issued a Maintenance Information Letter stating
that “[r]ecent shop findings have revealed that the MD-80 rudder trim tab support bearings
may not always be receiving adequate lubrication.” The letter indicated that two airplanes
that had recently come out of a C check, during which the bearings should have been
lubricated, showed “extreme bearing wear, with little or no evidence of grease” and that
one of the bearings “fell apart upon removal.” Alaska Airlines subsequently indicated that,
contrary to what was stated in the letter, the airplanes had not recently undergone a C
check. However, regardless of how long it had been since the last C check or scheduled
lubrication, the condition of these bearings strongly suggests that they were not adequately
lubricated at the last scheduled lubrication opportunity. This raises significant concerns
about Alaska Airlines’ lubrication practices, especially in light of the findings from this
investigation relating to inadequate lubrication of jackscrew assemblies.
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Dette er meget interessant når man vet at det viktigste punktet i
MSG-3 (som alt moderne flyvedlikehold følger) er sentrert rundt smøring og ettersyn. Slurv på dette området er som banning i kirka å regne!
