| P1379146A407 | Escape & DV Window Panel Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS 1506102-501 | Pane, Inner Cabin Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS 9911003-1 | Windshield | Perkins Aircraft Svc Inc (formerly Westbase) | | 56 | Structures | PMA |
| PAS 9911003-2 | Windshield | Perkins Aircraft Svc Inc (formerly Westbase) | | 56 | Structures | PMA |
| PAS101-420080-5 | Storm Window Left Hand | Perkins Aircraft Svc Inc (formerly Westbase) | | 56 | Structures | PMA |
| PAS101-420080-6 | Storm Window Right Hand | Perkins Aircraft Svc Inc (formerly Westbase) | | 56 | Structures | PMA |
| PAS101-420081-5 | D Side Window Standard Size | Perkins Aircraft Svc Inc (formerly Westbase) | | 56 | Structures | PMA |
| PAS101-420081-6 | D Side Window Standard Size | Perkins Aircraft Svc Inc (formerly Westbase) | | 56 | Structures | PMA |
| PAS101-430183-5 | Cabin Window | Perkins Aircraft Svc Inc (formerly Westbase) | | 56 | Structures | PMA |
| PAS101-440042-3 | Window, L/H Teardrop | Perkins Aircraft Svc Inc (formerly Westbase) | | 56 | Structures | PMA |
| PAS101-440042-4 | Window, R/H Teardrop | Perkins Aircraft Svc Inc (formerly Westbase) | | 56 | Structures | PMA |
| PAS101-440042-5 | Window, L/H Teardrop | Perkins Aircraft Svc Inc (formerly Westbase) | | 56 | Structures | PMA |
| PAS101-440042-6 | Window, R/H Teardrop | Perkins Aircraft Svc Inc (formerly Westbase) | | 56 | Structures | PMA |
| PAS125C-1 | C Panel Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS125C-2 | G Panel Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS125CL-3 | Window Assembly Laminated C Panel | Perkins Aircraft Svc Inc (formerly Westbase) | — | 20 | Consumables / Hardware | PMA |
| PAS125CL-4 | Window Assembly Laminated C Panel | Perkins Aircraft Svc Inc (formerly Westbase) | — | 20 | Consumables / Hardware | PMA |
| PAS125DV-1 | DV Window Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 20 | Consumables / Hardware | PMA |
| PAS125DV-2 | DV Window Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 20 | Consumables / Hardware | PMA |
| PAS125DV-3 | DV Window Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 20 | Consumables / Hardware | PMA |
| PAS125DV-4 | DV Window Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 20 | Consumables / Hardware | PMA |
| PAS125DVL-1 | Laminated DV Window Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS125DVL-2 | Laminated DV Window Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS125DVL-3 | Laminated DV Window Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS125DVL-4 | Laminated DV Window Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS1379138C401 | Center Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 20 | Consumables / Hardware | PMA |
| PAS1379139CA401 | Rear Cockpit Window Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS1379139CA402 | Rear Cockpit Window Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS14156004-403 | Acrylic LH Glazing Panel | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS14156004-404 | Acrylic RH Glazing Panel | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS1506101-101 | Pane, Outer Cabin Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS1506101-501 | Pane, Outer Cabin Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS1506102-101 | Pane, Inner Cabin Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS159SCCE103-11 | Inner Pane Cabin Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS159SCCE103-17 | Outer Pane Cabin Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS159SCCE103-3 | Inner Pane Cabin Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS159SCCE103-9 | Inner Pane Cabin Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS184903-105 | Pane Inner Passenger Compartment Window. | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS184903-108 | Pane Outer Passenger Compartment Window. | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS2311260-1 | L/H Windshield Undrilled & Untrimmed | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS2311260-2 | R/H Windshield Undrilled & Untrimmed | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS2311260-37 | Outer Windshield Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS2311260-38 | Outer Windshield Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS2311260-4 | R/H Windshield | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS2311260-42 | Inner Windshield Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS2311260-43 | Inner Windshield Assembly | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS2311320-23 | Emergency Exit Window Pane Inner | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS2311320-29 | Emergency Exit Window Pane Outer | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS2311330-21 | Right Hand Outer Pane Cabin Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |
| PAS2311330-27 | Left Hand Outer Pane Cabin Window | Perkins Aircraft Svc Inc (formerly Westbase) | — | 56 | Structures | PMA |