@B737SFP
Well. Don't like the argumentation. If you suspect tire damage I would never retract the gear. 2nd segment is an argumentation if you have an engine failure(which you should be aware at that moment I guess).
Other considerations? Well - some airport require a high climb gradient for the SID, there I would check with ATC if you could divert from dep route, get radar vectors or climb in a holding over the field. So many options. Retracting a damaged gear (or suspected damaged one) is never a really good idea.
Of course that's just my humble opinion and this one of some airlines I worked with.
@SAB Well, SAlzburg might be tricky if you depart in southerly direction only. And then it is not really climb limited, it is turn limited till on head(track?) 340 or so. It is more or less a protection if you loose one engine during TO and then would not bank at least 25° or more then 160kts/165kts(if I remember right). Not really a big issue with climb gradient heading out north, over the german "flatlands" ^^(right guess, I am Austrian).
Even Innsbruck is no big deal with 2 engines(or more). Climb your way out to Rattenberg(RTT) via the Inn Valley. SE is a different story, especially if departing West. In this case you have to go direction Telfs(normally the SE procedure) and turn around there, go back to the field and head out to RTT. No rocket science. Just planning. But keep that gear out. ;-)
Some tricky airport would be only Sion(and I don't think so many airliners going into that. Out of there you really need a high rate of climb. There you could consider a gear up, I still would go for the SE escape route turning out right into the valley for lake Geneva. You don't know whats wrong with that gear or tire and you don't want that really retracted. Chances are that you never get it out again or even worse, it is on fire and burns up your shiny airplane. Even in Kathmandu I would go for the SE procedure, do the holding over the field and slowly(an aircraft with 2 healthy engines climbs beautifully, even with the gear out) make your way out of there. Or even better, re-land if the runway is long enough.
Last edited by tomuchwork; 20th March 2016 at 00:15.