Couple of points here.
Firstly, although we requested 170 to 4 on the B737, in actual fact what we really need is about 170 to 7 - 'cos procedures were to have gear down and locked by 2000 AGL.
Secondly, the replier who remarked about 160 being flap 10 is out of date - as has been pointed out already, with the rudder problems, it is now 160/flap 15. 170 kts allows flap 10 (non-standard) and gear up.
Thirdly, for DIRECTOR and 120.4, please could you pass the word that, no matter how frustrated you are, there is no point in saying "one at a time please" when two people transmit - if we both start at the same time, then we have no way of telling that anybody else is transmitting.