As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER PUSH BACK, LOWER CREW REST ALARM SOUNDED ONLY IN LOWER CREW REST. LOWER CREW REST AREA AND AFT CARGO AREA VISUALLY INSPECTED. NO FAULT FOUND. CREW REST DISCONNECTED FROM AIRCRAFT. ON FIRST ENTRY OF CREW REST UNIT, FAINT ODOR OF A PLASTIC BURNING SMELL DETECTED. UNABLE TO LOCATE SOURCE OF SMELL. SMOKE DETECTION UNIT AND VENT TEST CARRIED OUT. AIRCRAFT CHECKS SERVICEABLE. (X)