Narrative:

Aircraft was in for an A-14 maintenance check here in the hangar. Mechanic following job card pre-check preparation item 3; is required to deactivate leading edge and trailing edge slats and flaps on checks 6; 8; 14; 16; 22; 24 only. After maintenance is accomplished and prior to release back to service; mechanic is then required to perform job card 2005 pre-dispatch check. Look at item 1. Required to reactivate leading and trailing edge flaps and slats on checks 8; 16; 24. If 2 different mechanics perform the tasks separately; the slats and flaps could be left in the deactivated condition on checks 6; 14; 22. Callback conversation with reporter revealed the following information: reporter stated the job cards for the deactivation and reactivation of their B777-200's leading edge slats and trailing flaps are normally done prior to and at the end of maintenance checks that are listed as even # 6; 8; 14; 16; 22; 24. The job card for reactivating the slats and flaps requires mechanic to check item #1 to determine what maintenance check number the aircraft is listed under. Although the slats and flaps are deactivated during six different maintenance checks; they are only reactivated under three. The other three; not listed as required in the pre-dispatch check card; are only being reactivated because mechanics familiar with the maintenance work being done; know the slats and flaps have to be reactivated. Reporter stated the flight crew would not see any circuit breakers pulled (open) in the cockpit; because the deactivation procedure has circuit breakers pulled in the lower east/east compartment. Reporter stated he's not sure when; or if; the flight crew would get an EICAS message about the slats and flaps being deactivated with the circuit breakers pulled. Reporter stated he's not sure if the slats and flaps are extended and then deactivated or full up during that portion of the maintenance check.

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Original NASA ASRS Text

Title: Mechanic reports three of the six maintenance check job cards that require deactivation of the leading edge slats and flaps on their B777-200's; do not have a reactivation procedure for the same slats and flaps prior to dispatch.

Narrative: Aircraft was in for an A-14 Maintenance Check here in the hangar. Mechanic following job card Pre-Check Preparation item 3; is required to deactivate leading edge and trailing edge slats and flaps on checks 6; 8; 14; 16; 22; 24 only. After maintenance is accomplished and prior to release back to service; Mechanic is then required to perform job card 2005 Pre-Dispatch Check. Look at item 1. Required to reactivate leading and trailing edge flaps and slats on checks 8; 16; 24. If 2 different Mechanics perform the tasks separately; the slats and flaps could be left in the deactivated condition on checks 6; 14; 22. Callback conversation with Reporter revealed the following information: Reporter stated the job cards for the deactivation and reactivation of their B777-200's leading edge slats and trailing flaps are normally done prior to and at the end of maintenance checks that are listed as even # 6; 8; 14; 16; 22; 24. The job card for reactivating the slats and flaps requires Mechanic to check item #1 to determine what maintenance check number the aircraft is listed under. Although the slats and flaps are deactivated during six different maintenance checks; they are only reactivated under three. The other three; not listed as required in the pre-dispatch check card; are only being reactivated because mechanics familiar with the maintenance work being done; know the slats and flaps have to be reactivated. Reporter stated the flight crew would not see any circuit breakers pulled (open) in the cockpit; because the deactivation procedure has circuit breakers pulled in the lower E/E compartment. Reporter stated he's not sure when; or if; the flight crew would get an EICAS message about the slats and flaps being deactivated with the circuit breakers pulled. Reporter stated he's not sure if the slats and flaps are extended and then deactivated or full up during that portion of the maintenance check.

Data retrieved from NASA's ASRS site as of May 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.