Why not adapt the take off mode to include an approach mode ?
At less than 70Kts IAS and descending, this mode could be enabled to give a SINK RATE / PULL UP warning in relation to rate of descent and RADALT height....... at values that are appropriate to helicopter operations!!
Arguably of more use than a 100' call and, with the technology now available, a practical and cost effective (?) safety enhancement.
Last edited by marcr; 26th Nov 2009 at 13:17.
Reason: Safety enhancement rather than solution.