What was found
DURING HEAVY CHECK MAINTENANCE FOUND LH WING OUTBD SPAR 1 HAS SUSPECTED CRACK AT LOWER FLANGE RADIUS OUTBD OF LAST RIB. REMOVED AND REPLACED LH SPAR 1 OUTBOARD SEGMENT. REF SRM 51-40-08. PREPPED, PRIMED,AND PAINTED LH WING SPAR 1 REPAIR REF EMB SRM 51-23-04, SRM 51-23-05, SRM 51-23-06. A/C REMAINS IN CHECK.