Corners have half-arch cutout; marked "fuel heaters" at top center; has 16 holes 0.531 in dia, cbore 0.750 diameter x 0.12 deep: top left one marked " apu 2" above "a/c" over hole, "d/c" below, and "off" to left; top right hole marked "apu 1" above "a/c" over hole, "d/c" below, and "off" to right; below these is a row of 4 holes marked "tank 4 tank 2 tank 3 tank 1" above line with word "pre" marked above each hole, below row is line with "sus" below each hole, to left and right of row is "off"; below center grommet is marking " anti-ice" with "eng 4 eng 2 eng 3 eng 1" then row with "open" above and "close under each hole; next is row of 4 holes with " p prp s prp apu 2 apu 1" on one line and "on" above and "off" below each hole; at bottom left are 2 holes marked ""engine" above "blo-in" above "on" over left one and "apu" above "blo-in" above "on" over right one and "off" below both
NSN 5915-01-375-7981
NSN 7035-00-455-7666
NSN 5905-00-107-9087
NSN 6645-01-520-6563
NSN 5990-01-133-0351
NSN 5920-01-350-4426
NSN 6240-00-901-8612
NSN 5930-01-524-6245
NSN 6240-01-497-9574
NSN 6110-00-964-3514
NSN 5855-01-213-0783
NSN 5990-01-121-1175
Last Updated: 01/16/2025