757.packs smelling on FL400 ferry
757 ferry flight at FL400, SAT -55 degrees C, oldest aircraft in the fleet.
About 2 mins after top of climb there was a smell of hot plastic in the rear that, after contact with engineering on HF, was mostly resolved by placing the trim air off and packs to stby-C. Smell departed but temps dropped to about 8 centigrade.
Anyone have any tech info on what was happening? I ASSUME that a lack of pax meant that the heat exchangers were struggling to get enough heat into the fuselage without 235 pax generating heat and thus got overworked.
Not seen this described elsewhere but eng say it has happened before. Nearly dropped into Dubrovnik for a night out!!