1301 BOAC, go play with NG guys...
There is no reference for Takata's assertion that it would be latched. IMO it could well be a temporary condition similar to the unavailability of the FD's - the SPD flag that occurs later is not latched…
HN39:
This is baffling to me. There's also no reference contradicting Takata. Having done some UAS work for sim lesson plans before I retired…
I can get a ‘latched’ SPD LIM flag with NO characteristic speed info on BOTH PFD’s by simply inputting a speed discrepancy of 50 knots, failing a single ADR in use (either 1 or 2, or 3 if switched), and then reviving the ADR and removing the speed discrepancy.
I will be in a ‘latched’ alternate law of some flavor (amber hash marks), both FD’s are back, but the absence of characteristic speed info is permanent, however the SPD LIM flag remains also???
I think I have ALT2”B” OCD.