What was found
DURING AN A-CHECK IN MCN, THE RIGHT BATTERY RIB ASSEMBLY AT WS 53.60 WAS FOUND TO BE CRACKED BEYOND LIMITS. MAINTENANCE PERFORMED A TEMPORARY REPAIR TO THE RIGHT BATTERY RIB ASSEMBLY AT WS 53.60 IAW BOMBARDIER REO 601R-57-51-195. THIS IS A TEMPORARY REPAIR IS VALID FOR 500 FLIGHT HOURS FROM THE TIME OF INCORPORATION AND IS TO BE INSPECTED AT EVERY SERVICE CHECK. OPS CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (M)