What was found
AT 37000 MSL; THE AUTO FAIL LIGHT ILLUMINATED. THE AUTO FAIL LIGHT REMAINED ILLUMINATED IN ALTN MODE AND THE QRH DIRECTED US TO MANUAL MODE. PACKS AND BLEEDS OPERATED NORMALLY<[01] INTERROGATED OMF FOUND FAULT CODES 21-30010/21-30011. RR P5-6 OVERHEAD PANEL PER AMM 21-31-02. C/W CPC BITE TEST PER AMM 21-31-00 NO FAULTS FOUND. C/W CABIN PRESSURE GROUND TEST PER AMM 21-31-00 NO DEFECTS NOTED. C/W PRESSURIZATION SYS MANUAL MODE TEST PER AMM 21-31-00 NO DEFECTS FOUND. C/W CABIN PRESSURE LEAK CK PER AMM 05-51-91 NO FAULTS FOUND. EV #E034187