What was found
CONTACTED BY THE CREW VIA TELESIS, AIRCRAFT WILL NOT PRESSURIZE IN AUTO MODE, SELECTED TO MANUAL MODE AND PRESSURIZATION WORKS OK. CREW ELECTED TO RETURN TO BLOCK. LT AND RT PRSOV. PERFORMED PRESSURIZATION OPS CHECK, OPS CHECK GOOD LT PRSOV, PN OFF GG670800025, SN OF 00455, RT PRSOV PN OFF GG670800025 SH OFF 00453. (K)