My colleague has it selected for the whole flight. Take off, cruise and approach.
Just another gimmick for goodness sake. You don't need a flight director to tell you to fly a bank angle of 15 degrees. You can easily see 15 degrees on the PFD unless you are so totally automatics addicted that you need a flight director to fly an aeroplane.
The statistical chances of having an engine failure on take off at the exact position where a curved take off starts and at a speed where you need exactly 15 degrees angle of bank, are so small that you could go through your entire career without it happening. And to have the selector set to 15 degrees in all stages of flight is nothing short of puerile thinking. Superfluous SOP's are the bane of this industry.
If it does happen while your angle of bank limiter is set to the normal 25 degrees, it takes less than a second for the selection to be made to 15 degrees if you are unable to operate without the aid of a FD.
