SID's are designed for min. 3.3% or higher climb gradient. A twin eng. a/c is expected to acheive 2.4% c.g. after an eng. failure. That's what your climb limit is all about. Be very carefull about following a SID on one engine. It may be that on the SID you're on that terrain is not an issue, but do you want to run the experiment on some dark dirty night in IMC? Fly straight ahead or if there's an EOSID follow that.
GA procedures are based on 2.5% c.g. As has been stated in previous posts, check your performance. If you can meet 2.5% c.g. you're good. If you can't, have a plan.
It boils down to never go anywhere in an a/c that your brain hasn't been first.
Last edited by 5LY; 2nd February 2012 at 18:59.