| W/XT-2374-250-RH | PIPER PA-31 2ND FROM REAR WINDOW - OUTER - RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2374-LH | PIPER PA-31 2ND FROM REAR WINDOW - OUTER - RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2374-RH | PIPER PA-31 2ND FROM REAR WINDOW - OUTER - RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2375-187-LH | PIPER PA-31 REAR WINDOW RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2375-187-RH | PIPER PA-31 REAR WINDOW RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2375-250-LH | PIPER PA-31 REAR WINDOW RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2375-250-RH | PIPER PA-31 REAR WINDOW RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2375-LH | PIPER PA-31 REAR WINDOW RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2375-RH | PIPER PA-31 REAR WINDOW RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2376 | PIPER PA-31-350 2ND WINDOW - OUTER - RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2376-187 | PIPER PA-31-350 2ND WINDOW - OUTER - RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2376-250 | PIPER PA-31-350 2ND WINDOW - OUTER - RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2381-LH | CESSNA 188 SKYLIGHTS RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2381-RH | CESSNA 188 SKYLIGHTS RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2386 | PIPER PA-31 CABIN DOOR WINDOWS - INNER - LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2389 | FAIRCHILD PT-26 FORWARD CANOPY TOP WINDOWS | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2391 | FAIRCHILD PT-26 CENTER CANOPY TOP WINDOWS | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2393 | FAIRCHILD PT-26 REAR CANOPY TOP WINDOWS | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2394 | FAIRCHILD PT-26 REAR WINDOW | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2400-LH | Cirrus Passenger Window LH or RH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2400-RH | Cirrus Passenger Window LH or RH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2406 | PIPER PA-31-350 2ND WINDOW -INNER RH or LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2406-060 | PIPER PA-31-350 2ND WINDOW -INNER RH or LH | Great Lakes Aero Products | | 20 | Consumables / Hardware | PMA |
| W/XT-2407 | PIPER PA-31 CENTER WINDOW -INNER RH or LH | Great Lakes Aero Products | | 20 | Consumables / Hardware | PMA |
| W/XT-2407-060 | PIPER PA-31 CENTER WINDOW -INNER RH or LH | Great Lakes Aero Products | | 20 | Consumables / Hardware | PMA |
| W/XT-2408-060-LH | PIPER PA-31 2ND FROM REAR WINDOW - INNER - RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2408-060-RH | PIPER PA-31 2ND FROM REAR WINDOW - INNER - RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2408-LH | PIPER PA-31 2ND FROM REAR WINDOW - INNER - RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2408-RH | PIPER PA-31 2ND FROM REAR WINDOW - INNER - RH OR LH | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2409-LH | Beech G18/H18 Skylights - RH or LH | Great Lakes Aero Products | — | 20 | Consumables / Hardware | PMA |
| W/XT-2409-RH | Beech G18/H18 Skylights - RH or LH | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2415-187-LH | PIPER PA-32/34 3RD WINDOW - RH or LH ( AFT CABIN DOOR ) | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2415-187-RH | PIPER PA-32/34 3RD WINDOW - RH or LH ( AFT CABIN DOOR ) | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2415-250-LH | PIPER PA-32/34 3RD WINDOW - RH or LH ( AFT CABIN DOOR ) | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2415-250-RH | PIPER PA-32/34 3RD WINDOW - RH or LH ( AFT CABIN DOOR ) | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2415-LH | PIPER PA-32/34 3RD WINDOW - RH or LH ( AFT CABIN DOOR ) | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2415-RH | PIPER PA-32/34 3RD WINDOW - RH or LH ( AFT CABIN DOOR ) | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2416 | Piper PA-42 Cabin Window - Inner - RH or LH | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2423 | Piper PA-42 Emergency Exit Window - Inner | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2424 | Piper PA-42-720 AFT Window - Inner - RH | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2429 | Piper PA-42-720 Cabin Window - Inner | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2431 | Cessna O2A Lower Door Window | Great Lakes Aero Products | | 56 | Structures | PMA |
| W/XT-2432 | Cessna O2A Lower RH Fuselage Window | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2440-LH | S.O.C.A.T.A. TB REAR SIDE WINDOW ASSEMBLY - RH or LH | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2440-RH | S.O.C.A.T.A. TB REAR SIDE WINDOW ASSEMBLY - RH or LH | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2441-LH | Beechcraft 50 Center Window - Inner - RH or LH | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2441-RH | Beechcraft 50 Center Window - Inner - RH or LH | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2442-LH | Beechcraft 50 Rear Window - Inner - RH or LH | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2442-RH | Beechcraft 50 Rear Window - Inner - RH or LH | Great Lakes Aero Products | — | 56 | Structures | PMA |
| W/XT-2445-RH | PIPER PA-31 REAR SIDE CAMERA PORT WINDOW ASSEMBLY | Great Lakes Aero Products | | 56 | Structures | PMA |