In third edition rules.
Snap roll description says (Chapter 7) :
Snap Rolls: A snap roll is done with large aileron and rud¬der deflections to roll an A/C as quickly as possible. Declaring a snap roll allows an A/C to reduce its banking FP requirement by 1 but never to < 1. For each bank angle change accomplished by snap rolls, 3 decel are incurred.
Combat chart says about the Rudder knocked out critical hit :
Rudder knocked out. No slips, skids, or spin recovery.
Shouldn’t a knocked out rudder also prevent a snap roll ?
Good point. Possible future errata.
At this time, refs can make it a house rule.
JD
(https://groups.io/g/FW-Ref-Central/message/3455) 07/03/2019