HI Guns
Just chatted to an engineer on type (319B).
That Booster Pump light should not be Blanked out, even IF some sort of mod has been done. As you well know, there would then be no indication of failure. Technically speaking the aircraft should be u/s until the light is sorted.
Hope that's of some help to you. Send me a PM and I can put you in contact with the Engie.
Cheers
DD
