Catalogue description Armstrong Siddeley Motors minutes of a meeting held to review the Python position

Page 1: Present state of development. 78 hours carried out during the period, making a total of 12,443 hours P.104 P.105 Page 2: P.105 P.240 Engine troubles Reverse torque switch Page 3: Arcing Electrical connection Wear at knife edge earth contact Failure of compressor blades Igniters Leakage Loose electrodes Production position Inertia controller units BTH starter oil leakage Failure of oil valve on BTH starters Low performance experienced with improved turbine disc cooling and reduced tip clearance Page 4: Remote accessory drive Stall recovery experiments Alternative fuels Electrical harness Flight report: Wyvern VZ.747 (ASP.112). ASP.112 is now removed due to stalling during taxiing and the turbine overheated Wyvern VZ.779 (ASP.285). As a result of a false fire warning which ended in the pilot bailing out and the complete loss of the aircraft we have written to Westland suggesting that the non-resetting type of fire switches used on the aircraft should be replaced by re-setting type similar to the ones used on our engines