Chesty,
Its worth remembering that Emergency Turns are used to avoid terrain/obstacles, the acceleration altitude is only based upon the obstacles in the new takeoff splay. If you accelerate arbiturally, therefore increasing the radius of the turn, it’s quite conceivable that the initially limiting obstacle will be in your flight path, your acceleration altitude therefore offers ZERO protection!
Hong Kong becomes our latest destination starting tomorrow, for the emergency turn we discussed the procedure with airlines based there, flew the profile in the FFS of the 2 aircraft types operating there. Sent observers on the flightdeck to see the airport, sent engineers to visit the airport, obtained topographical data and discussed the subject with the local authorities. Basically, a lot of effort went into designing the most appropriate procedure for our aircraft. Is this the sort of service that you are getting from your emergency turn designer?
Old_smokey.... It appears that since the question forum moved down the page, the level of questions in here have become less technical
Mutt