As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
KBUF - SABRES 7 - FORWARD AIRSTAIR DOOR OPERATED CORRECTLY IN STANDBY MODE. ONLY THE NORMAL MODE WAS INOPERATIVE. AIRCRAFT RETURNED TO THE AIRFIELD AND LANDED WITHOUT INCIDENT. AFTER CLOSING THE DOOR USING THE STANDBY MODE, THE AIRCRAFT PRESSURIZED NORMALLY. FORWARD AIRSTAIR DOOR ACTUATOR REPLACED. DOOR OPERATES NORMAL. (X)