Mutt:
Can you please supply a reference for this statement, start with your Jeppesen Manual.........
Aterpster is in FAA land......
Mutt, the regulation was changed a couple of years ago to encourage commercial operators to overlay their OEI performance calculations first on the airport's basic obstacle departure procedure ("ODP," used only at light traffic airports) or the applicable SID
provided the SID can contain the Part 25 flight path, but using AC 91-121 splays rather than the TERPs splays that were used to design the SID. In such case the SID is the preferred flight path for OEI. Of course, if this assessment of the SID passes OEI muster, then the SID will be so designated by the operator.
In many cases the SID won't work, in which case the game remains unchanged, with one exception. If transition from the SID to a feasible OEI path will not work when an engine fails after takeoff but early in the departure phase the operator is permitted to develop its own departure procedure that will work for both normal (comply with TERPS) and OEI conditions(AC 90-121). This option is not used often and then only when ATC will accept it in advance (usually at lighter traffic airports).