To answer a couple of queries thrown up earlier, the reason the cabin was cold during extended (2 hrs +) highish altitude was that someone in their wisdom left the K2/K3's with only 2 cabin compressors. It was deemed a "useful" weight saving by not having 2 big lumps on 2 of the engines, also to "aid" C of G by moving it further forward. Regarding the "escape chute", it was made inoperable once it was realized that there was a Skydrol item within the system which if a hydraulic leak occurred would not be very healthy for anyone in the cabin to be inhaling. After checking various Safety rules/regs regarding Skydrol it was decided to make the system inop, seem to remember likely to be during 1984 for K2's and as soon as the first K3 was delivered to 101 sqn.