c) were learning that other bombers maintained by that shop were at high risk of being poorly maintained.

The enemy thanks you for your cooperation in telling them where possible weaknesses are

edit: While the FedGov absolutely abused the privilege in Reynolds to hide negligence, from a pure intelligence standpoint, operational maintenance audit trails are rarely "harmless" information to hand to an enemy during a War. (Cold or otherwise)

You're telling the enemy where to look.