Does this card work with bombs? If so, do you loose your payload after someone hit the bombs? I don't imagine yo can keep dropping them everywhere till they get used?

No. Bombs are not attacks.

Thanks. I kinda thought so.

For clarity: bombs are certainly munitions, but the key words to Munitions Failsafe (and every other upgrade) are in the Card Ability. Secondary weapon is a key phrase for many upgrades. None of the bombs currently in the game are secondary weapons.

However there is a new interaction with Munitions Failsafe. When attacking against countdown, if countdown uses his pilot ability you do not discard your <missile> or <torpedo> secondary weapon (Unless you are Lt. Blount).

Munition is not a defined game term in X-Wing, but Secondary Weapon is. Bombs are probably the former, but definitely not the latter (so far).

13 hours ago, Marinealver said:

However there is a new interaction with Munitions Failsafe. When attacking against countdown, if countdown uses his pilot ability you do not discard your <missile> or <torpedo> secondary weapon (Unless you are Lt. Blount).

That's because Munitions' Failsafe triggers when an attack misses as defined by "good" attack results being less than or equal to "good" defense results. Countdown cancels the attack dice so the attack "misses" which triggers MF but also would allow it to keep its Stealth Device despite gaining a damage card.