00:26Z 3044 ANTI ICE R WINDOW
00:26Z 561200 R SLIDING WINDOW SENSOR
00:26Z 2600 SMOKE LAVATORY SMOKE
00:27Z 2600 AVIONICS SMOKE
00:28Z 561100 R FIXED WINDOW SENSOR
00:29Z 2200 AUTO FLT FCU 2 FAULT
00:29Z 2700 F/CTL SEC 3
LAV SMOKE was third message sent, this leads me to believe whatever brought the AC down did not originate in the Lavatory. If a fire originated in the lav, the attendants would have been trained to aggressively fight the fire once made aware of it. I believe there would have been a greater time lag between a lav originated fire and the end result. On our aircraft there is no ECAM for lav smoke, but there is an unannuciated checklist:
Lavatory Smoke
Condition: Smoke or fire is detected in a lavatory.
WARNING: If the smoke becomes so dense or toxic that it becomes the more immediate emergency, accomplish the Dense Smoke/Fuel Vapor checklist.
The Cabin attendants would be the first to know of lav smoke via CIDS generated audio and visual warnings. On our aircraft three low chimes are generated throughout the cabin. The amber section of the attendant call panel nearest the affected lav will flash. Finally the attendant information panel will read on the top line, "SMOKE LAVATORY" and on the second line "A,D or F" to indicate which lavatory detector is signaling smoke. Granted our Air Buses are dated, so newer models may have somewhat different indications.
Finally the lavatory exhaust fans run anytime power is on the aircraft and exhaust through the outflow valve.
Last edited by CaptainMongo; 21st May 2016 at 14:32.
Reason: Clarity