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 6610-00-081-2365
NSN 6105-01-142-3057
NSN 5960-01-031-1759
NSN 6645-01-497-1488
NSN 5920-01-159-7949
NSN 5895-00-144-0250
NSN 5990-01-544-0364
NSN 6105-01-613-0628
NSN 5930-01-394-4964
NSN 5999-00-571-6033
NSN 6145-00-817-3615
NSN 5965-01-503-1617
Last Updated: 01/16/2025