What was found
FLT#1131, FLL-CHS (AIRCRAFT DECLARED AN EMERGENCY AND PERFORMED AN AIR TURN BACK TO CHS). 'LG WOW SYS FAIL (AMBER) PERFORMED QRH AND RETURN TO CHS. THE GEAR WOULD NOT RETRACT; INSPECTION OF NLG FOUND THE NITRO SHRADER VALVE DAMAGED. REMOVED AND REPLACED NITRO SERV SHADER VALVE. ACCOMPLISHED FULL STRUT SERVICE IAW AMM 12-12-09. VERIFIED NLG TARGETS BY JACKING A/C, TARGETS MADE IA WAMM 32-20-00 & 07-10-01.' (SUPPLEMENTAL TO DESCRIPTION)