Clear oil drain hole.

Who you gonna call when your Apache main transmission oil filler cup drain hole plugs up? Clog Busters!

Mechanics, you're the drain clog busters to eyeball the bird's oil filler cup drain hole when you perform your 10-hour/14-day inspection like it says in TM 1-1520-238-PMS.

So don't forget to make sure excess oil, fluid, bugs, dirt, and condensation runoff haven't clogged the hole and backed up in the cup. Just because the oil drain hole is out of sight, don't put it out of mind.

If the drain hole gets clogged with gunk and overflows the cup, it can spill over on a hot generator. You could end up with a tire or lots of smoke and without generator power.

To unclog the oil drain hole, use a 6-ft long, 1/16-in diameter wire. Attach a "Remove Before Flight" streamer, NSN 8345-00-673-9992, and swedge, NSN 4030-00-960-1654. Smooth out all the burrs with a piece of crocus cloth and lightly coat the wire tip with RTV and let dry. Snake the oil drain hole with the wire to push the crud out. When the drain is clear, remove the wire to prevent a FOD problem.