What was found
PDX - AFTER TAKEOFF, THE LEFT LAVATORY SMOKE ALARM SOUNDED. FLIGHT ATTENDANTS REPORTED THE SMELL OF OIL. REMOVED AND REPLACED APU. FUNCTIONAL AND OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PDX - AFTER TAKEOFF, THE LEFT LAVATORY SMOKE ALARM SOUNDED. FLIGHT ATTENDANTS REPORTED THE SMELL OF OIL. REMOVED AND REPLACED APU. FUNCTIONAL AND OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.