What was found
FLT 253 - GDL-MEX - DURING TRANSIT CHECK, THE NOSE LANDING GEAR STRUT WAS FOUND COMPRESSED WITHOUT NITROGEN PRESSURE. THE NLG STRUT SEALS WERE REPLACED IAW MM 32-31-02 AND AN AJUSTMENT TO THE GROUND SENSING CONTROL MECHANISM WAS PERFORMED IAW MM 32-23-01, TESTS CORRECT. AT MEX, THE NLG STRUT CONTINUE WITH HYDRAULIC LEAKAGE. DURING OVERNIGHT SERVICE, THE NLG STRUT SEALS WERE REPLACED IAW MM 32-21-02, GROUND SENSING CONTROL MECHANISM AS VERIFIED IAW 32-23-01, EXTENSION AND RETRACTION TESTS AND LUBRICATION WERE PERFORMED IAW MM 32-30-00 AND 12-21-04, ALL CORRECT. THE NLG STRUT WAS REPLACED AND SYSTEM TESTED IAW MM 32-21-02, ALL CORRECT. (M)