Seal out water.

Mechanics. during your next AH-64A/D 25-hour/14-day inspection of the right and left extended forward avionics bay (EFAB), check the seal gaskets for wear.

Over time the gaskets harden and lose their seal, leaving components vulnerable to water seeping into the bay in flight or when the bird's outside on the flight line.

Water can cause havoc and knock out many of the electronic components in the left or right EFAB.

If you've got a bad seal gasket, replace it like it says in TM 1-1520-Longbow Apache IETM RPSTL and TM 1-1520-238-23P for the A model.

So preflight your bird to make sure you have good gaskets, and you'll have a good flight.