Jim
Thanks for the detailed explanation here. Two points.
Firstly, when requesting a strictly Helipad Procedure departure profile from ATC, what is the correct request to ATC; I assume simply for a "helipad departure", rather than Cat A /Group A/Class 1 departure?
Secondly, to achieve Category A certification, with reference to rejects before TDP following a helipad procedure, what criteria for subsequent life/durability to engines and transmissions are specified/involved? Of course the acft must be operated within all the transient OEI limits in the FM, but when a manufacturer specifies a say 15 second power limit OEI, which is likely to be the limiting factor on a reject, what reduction if any to the TBO of engine/transmissions follow full use of that transient limit?
On the face of it, this is a manufacturer question, but presumably the regulating authorities have specifications that prevent a manufacturer simply taking the view that the transient OEI limit is one that has a say 90% chance of the engine/transmission not failing in such use, though must inevitably then be immediately deemed unservicable and over-hauled?
Last edited by rotorspeed; 9th Apr 2005 at 19:06.