I am curious to know what the training says to do in a TU-204 as well. Turning off the anti-skid system or reverting to emergency braking are options in some other types of airplanes when normal braking doesn't work as expected.
That's what the Tu-204 FCOM says as well (sections 8.9.26-32), advicing on various braking system symptoms on application of brakes to do one or more of these steps:
- autobrake off (commander)
- selection of reserve brake system (commander)
- both pilots on the pedals for max braking effort
- use the parking brake handle (commander)
- pull the CBs for emergency and normal brake pressure regulation (flight engineer)
This doesn't tell you which of those actions will be effective with a WOW malfunction though.
However, it doesn't make much sense for the wheel brake logic to inhibit all function in absense of WOW signal, because landing with wheels already locked is much less of a problem than not having any brakes at all and also the autobrake and NWS functions need other input from the wheels, which could be used to compare with the presense of WOW signal, such as wheel speed data. If all of the wheels are turning at about the same speed, it's a sure sign weight is indeed on the wheels.