What was found
DURING PREFLIGHT, PRESSURIZATION PANEL DISPLAYED AMBER "AUTO FAIL" AND GREEN "ALTN" ANNUNCIATOR LIGHTS WITH SWITCH IN "AUTO" POSITION. ACFT GROUNDED. R & R NR 2 CABIN PRESSURE CONTROLLER. OP CK NORMAL. REF MM 21-31-01.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING PREFLIGHT, PRESSURIZATION PANEL DISPLAYED AMBER "AUTO FAIL" AND GREEN "ALTN" ANNUNCIATOR LIGHTS WITH SWITCH IN "AUTO" POSITION. ACFT GROUNDED. R & R NR 2 CABIN PRESSURE CONTROLLER. OP CK NORMAL. REF MM 21-31-01.