Out bound tracks 3 (caution)

18.03.2008

Submission:

Further on the point made that procedure designers assume a turn is made at the published altitude and the obstacles are cleared by following the subsequent track instructions as long as the aircraft has achieved the minimum EO climb gradient. What happens though in the case of our performance charts which give (say) a maximum level off/acceleration altitude to clean up in order to comply with a 10 minute time limitation for the live engine, below the recommended turn at altitude. Complying with the performance charts could result in a greater distance travelled before the "turn at Altitude" is reached as the aircraft has flown longer in a straight line cleaning up. Does this mean that the obstacle clearance calculated by the eng fail procedure designer may be compromised?

Captain P. Ormrod

Answer or Commentary:

(I.W.

I hope this is not happening as the minimum obstacle clearance could be seriously infringed. However, surely the engine out designer should take this into account.)