We have performed many of the SB2023-23-14 AM 39–22616 on the Boeing 747 type to address latent failures of the lightning protection features for the engine fuel feed system, we can carry out the full SB or just the repair after the bonding tests have been carried out. Work can be performed safely outside without the need for expensive hangar costs. Please remember we have teams available on an AOG or scheduled basis to carry out all of your tank entry requirements, fuel leak repairs, tank scrubs, component replacements