Basler Turbo Conversions Inc.
PMA PQ2412CE · 99 approved parts replacing 99 OEM numbers · Boeing, Mcdonnell Douglas Corporation, The Boeing Company
| PMA part | Replaces | Name | Make / model | Status | On PartsAndPlanes |
|---|---|---|---|---|---|
| BTC1000402 | 1000402 | Bolt Wing Spar Panel Special | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Mar 2020 | — |
| BTC1115671 | 1115671 | Bolt Aileron Outboard Hinge Fork | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Mar 2020 | — |
| BTC1116955 | 1116955 | Landing Gear Oleo Truss Attaching | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Mar 2020 | — |
| BTC134808 | 134808 | Bolt Assy Rudder & Elevator Eye | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Mar 2020 | — |
| BTC143908-224-SR-300-093 | 143908-224-SR-300-093 | Washer Cylinder Seal Hydraulic | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Apr 2018 | — |
| BTC146004 | 146004 | Tail Wheel Half Assembly Outboard | Mcdonnell Douglas Corporation DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G, (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3CS1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6), DC3D-R-1830-90C (Army C117A) | Current, Dec 2010 | — |
| BTC146005 | 146005 | Tail Wheel Half Assembly Inboard | Mcdonnell Douglas Corporation DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G, (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3CS1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6), DC3D-R-1830-90C (Army C117A), | Current, Dec 2010 | — |
| BTC2114343 | 2114343 | Fuselage Frame Channel F.S. 429.5 | Boeing DC3C-SC3G, DC3C-S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2013 | — |
| BTC2116354 | 2116354 | Bolt Aileron Hinge Eye | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Mar 2020 | — |
| BTC3115184 | 3115184 | Hinge- Elevator Inner | The Boeing Company -S4C4G(Army C-47 | C-41A | C-47A;Navy R4D-1 | C-48 | C-48A | C-52 | C-52A | C-52B | C-52C | C-53 | C-53B | C-53C | C-53D | C-68;Navy R4D-3 | DC3A-S1C3G(Army C-41 | DC3A-S1CG | DC3A-S4C4G | DC3A-SC3G | DC3A-SCG | DC3C-R-1830-90C(Army C-47B | DC3C-S1C3G | DC3C-SC3G | DC3D-R-1830-90C(Army C-117A) | Navy R4D-6) | R4D-4) | R4D-5) | Current, Apr 2024 | — |
| BTC3115184-1 | 3115184-1 | Hinge-Elevator Outer | The Boeing Company -S4C4G(Army C-47 | C-41A | C-47A;Navy R4D-1 | C-48 | C-48A | C-52 | C-52A | C-52B | C-52C | C-53 | C-53B | C-53C | C-53D | C-68;Navy R4D-3 | DC3A-S1C3G(Army C-41 | DC3A-S1CG | DC3A-S4C4G | DC3A-SC3G | DC3A-SCG | DC3C-R-1830-90C(Army C-47B | DC3C-S1C3G | DC3C-SC3G | DC3D-R-1830-90C(Army C-117A) | Navy R4D-6) | R4D-4) | R4D-5) | Current, Apr 2024 | — |
| BTC4115760 | 4115760 | Bracket Rudder Stock Reinfrcmnt F.S. 708 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC4139191 | 4139191 | Fuselage Frame L.H. Upper F.S. 553 | Mcdonnell Douglas Corporation DC3C-SC3G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Sep 2011 | — |
| BTC4139193 | 4139193 | Fuselage Frame L.H. Upper F.S. 450.5 | Mcdonnell Douglas Corporation DC3C-SC3G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Sep 2011 | — |
| BTC4139194 | 4139194 | Fuselage Frame L.H. Upper F.S. 520 | Mcdonnell Douglas Corporation DC3C-SC3G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6)) (DC3C-SC3G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Sep 2011 | — |
| BTC4139198 | 4139198 | Fuselage Frame L.H. Upper F.S. 465.5 | Mcdonnell Douglas Corporation DC3C-SC3G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Sep 2011 | — |
| BTC4139200 | 4139200 | Fuselage Frame L.H. Upper F.S. 429.5 | Mcdonnell Douglas Corporation DC3C-SC3G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Sep 2011 | — |
| BTC4139822 | 4139822 | Fuselage Frame L.H. Upper F.S. 492.5 | Mcdonnell Douglas Corporation DC3C-SC3G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Sep 2011 | — |
| BTC5111048-2 | 5111048-2 | Fuselage Frame Right Hand Lower Aft F.S. 568 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, DC3C-S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Apr 2016 | — |
| BTC5111048-4 | 5111048-4 | Fuselage Frame Left Hand Lower Aft F.S. 568 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, DC3C-S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Apr 2016 | — |
| BTC5111090-2 | 5111090-2 | Fuselage Frame Left Hand Lower Aft F.S. 553 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, DC3C-S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Apr 2016 | — |
| BTC5111090-4 | 5111090-4 | Fuselage Frame Right Hand Lower Aft F.S. 553 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, DC3C-S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Apr 2016 | — |
| BTC5111109-2 | 5111109-2 | Fuselage Frame Left Hand Lower Aft F.S.372.5 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Jul 2015 | — |
| BTC5111109-3 | 5111109-3 | Fuselage Frame Right Hand Lower Aft F.S.372.5 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Jul 2015 | — |
| BTC5111165-2 | 5111165-2 | Fuselage Frame Left Hand Lower Aft F.S. 411.5 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Jul 2015 | — |
| BTC5111165-3 | 5111165-3 | Fuselage Frame Right Hand Lower Aft F.S. 411.5 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Jul 2015 | — |
| BTC5111167-2 | 5111167-2 | Fuselage Frame Left Hand Lower Aft F.S.429.5 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Jul 2015 | — |
| BTC5111167-3 | 5111167-3 | Fuselage Frame Right Hand Lower Aft F.S.429.5 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Jul 2015 | — |
| BTC5111224-2 | 5111224-2 | Fuselage Frame R.H. Upper F.S. 553 | Mcdonnell Douglas Corporation DC3A-SCG, DC3A-SC3G DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Jun 2011 | — |
| BTC5111224-4 | 5111224-4 | Fuselage Frame R.H. Center F.S. 553 | Boeing DC3A-SCG DC3A-SC3G DC3A-S1CG DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Dec 2011 | — |
| BTC5111363-10 | 5111363-10 | Fuselage Frame Right Hand Lower Aft F.S.583 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, DC3C-S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Apr 2016 | — |
| BTC5111363-2 | 5111363-2 | Fuselage Frame Left Hand Lower Aft F.S.583 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, DC3C-S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Apr 2016 | — |
| BTC5111363-6 | 5111363-6 | Fuselage Frame Lower Aft F.S.583 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, DC3C-S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Apr 2016 | — |
| BTC5111363-8 | 5111363-8 | Channel F.S.583 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, DC3C-S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Apr 2016 | — |
| BTC5111554-2 | 5111554-2 | Fuselage Frame Left Hand Lower Aft F.S. 390.5 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Jul 2015 | — |
| BTC5111554-3 | 5111554-3 | Fuselage Frame Right Hand Lower Aft F.S. 390.5 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Jul 2015 | — |
| BTC5111906-2 | 5111906-2 | Fuselage Frame Left Hand Lower Aft F.S. 450.5 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Jul 2015 | — |
| BTC5111906-4 | 5111906-4 | Fuselage Frame Right Hand Lower Aft F.S. 450.5 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Jul 2015 | — |
| BTC5111907-2 | 5111907-2 | Fuselage Frame R.H. Upper F.S. 450.5 | Mcdonnell Douglas Corporation DC3A-SCG, DC3A-SC3G DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Jun 2011 | — |
| BTC5111907-4 | 5111907-4 | Fuselage Frame R.H. Center F.S. 450.5 | Boeing DC3A-SCG DC3A-SC3G DC3A-S1CG DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Dec 2011 | — |
| BTC5112052-2 | 5112052-2 | Fuselage Frame Left Hand Lower Aft F.S.465.5 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2015 | — |
| BTC5112052-4 | 5112052-4 | Fuselage Frame Right Hand Lower Aft F.S.465.5 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2015 | — |
| BTC5112054-2 | 5112054-2 | Fuselage Frame R.H. Center F.S. 465.5 | Boeing DC3A-SCG DC3A-SC3G DC3A-S1CG DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Dec 2011 | — |
| BTC5112054-4 | 5112054-4 | Fuselage Frame R.H. Upper F.S. 465.5 | Mcdonnell Douglas Corporation DC3A-SCG, DC3A-SC3G DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Jun 2011 | — |
| BTC5112100-2 | 5112100-2 | Fuselage Frame R.H. Upper F.S. 479.5 | Mcdonnell Douglas Corporation DC3A-SCG, DC3A-SC3G DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Jun 2011 | — |
| BTC5112100-4 | 5112100-4 | Fuselage Frame R.H. Center F.S. 479.5 | Boeing DC3A-SCG DC3A-SC3G DC3A-S1CG DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Dec 2011 | — |
| BTC5112125-2 | 5112125-2 | Fuselage Frame Left Hand Lower Aft F.S. 506/510 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2015 | — |
| BTC5112125-4 | 5112125-4 | Fuselage Frame Right Hand Lower Aft F.S. 506/510 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2015 | — |
| BTC5112126-2 | 5112126-2 | Fuselage Frame R.H. Center F.S. 506 | Boeing DC3A-SCG DC3A-SC3G DC3A-S1CG DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Dec 2011 | — |
| BTC5112126-4 | 5112126-4 | Fuselage Frame R.H. Upper F.S. 506 | Mcdonnell Douglas Corporation DC3A-SCG, DC3A-SC3G DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Jun 2011 | — |
| BTC5112204-2 | 5112204-2 | Fuselage Frame Left Hand Lower Aft F.S. 492 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2015 | — |
| BTC5112204-4 | 5112204-4 | Fuselage Frame Right Hand Lower Aft F.S. 492 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2015 | — |
| BTC5112205-2 | 5112205-2 | Fuselage Frame R.H. Upper F.S. 492 | Mcdonnell Douglas Corporation DC3A-SCG, DC3A-SC3G DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Jun 2011 | — |
| BTC5112205-4 | 5112205-4 | Fuselage Frame R.H. Center F.S. 492 | Boeing DC3A-SCG DC3A-SC3G DC3A-S1CG DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Dec 2011 | — |
| BTC5112270-2 | 5112270-2 | Fuselage Frame R.H. Center F.S. 520 | Boeing DC3A-SCG DC3A-SC3G DC3A-S1CG DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Dec 2011 | — |
| BTC5112270-4 | 5112270-4 | Fuselage Frame R.H. Upper F.S. 520 | Mcdonnell Douglas Corporation DC3A-SCG, DC3A-SC3G DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Jun 2011 | — |
| BTC5112391-2 | 5112391-2 | Fuselage Frame R.H. Upper F.S. 538 | Mcdonnell Douglas Corporation DC3A-SCG, DC3A-SC3G DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Jun 2011 | — |
| BTC5112391-4 | 5112391-4 | Fuselage Frame R.H. Center F.S. 538 | Boeing DC3A-SCG DC3A-SC3G DC3A-S1CG DC3A-S1C3G (Army C-41, C-41A, C-48, C48A, C52, C52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4) DC3A-S4C4G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) DC3D-R-1830-90C (Army C117A) | Current, Dec 2011 | — |
| BTC5112392-2 | 5112392-2 | Fuselage Frame Right Hand Lower Aft F.S.538 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, DC3C-S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Apr 2016 | — |
| BTC5112392-4 | 5112392-4 | Fuselage Frame Left Hand Lower Aft F.S.538 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, DC3C-S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Apr 2016 | — |
| BTC5112853 | 5112853 | Fuselage Frame Stub F.S. 513 | Boeing DC3C-SC3G, DC3C-S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2013 | — |
| BTC5112892 | 5112892 | Fuselage Frame Stub F.S. 472.5 | Boeing DC3C-SC3G, DC3C-S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2013 | — |
| BTC5112893 | 5112893 | Fuselage Frame Stub F.S. 458 | Boeing DC3C-SC3G, DC3C-S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2013 | — |
| BTC5112900 | 5112900 | Fuselage Frame Stub F.S. 485.5 | Boeing DC3C-SC3G, DC3C-S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2013 | — |
| BTC5112965 | 5112965 | Fuselage Frame Stub F.S. 499 | Boeing DC3C-SC3G, DC3C-S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2013 | — |
| BTC511512-2 | Goodyear 511512-2 | Small Ring Bearing Closure Shaped | Boeing -S4C4G (Army C-47 | C-41A | C-47A | C-48 | C-48A | C-52 | C-52A | C-52B | C-52C | C-53 | C-53B | C-53C | C-53D | C-68 | DC3A-S1C3G (Army C-41 | DC3A-S1CG | DC3A-S4C4G | DC3A-SC3G | DC3A-SCG | DC3C-R-1830-90C (Army C-47B | DC3C-S1C3G | DC3C-SC3G | DC3D-R-1830-90C (Army C-117A) | Navy R4D-1 | Navy R4D-3 | Navy R4D-6) | R4D-4) | R4D-5) | Current, Feb 2021 | — |
| BTC511512-3 | Goodyear 511512-3 | Large Ring Bearing Closure Shaped | Boeing -S4C4G (Army C-47 | C-41A | C-47A | C-48 | C-48A | C-52 | C-52A | C-52B | C-52C | C-53 | C-53B | C-53C | C-53D | C-68 | DC3A-S1C3G (Army C-41 | DC3A-S1CG | DC3A-S4C4G | DC3A-SC3G | DC3A-SCG | DC3C-R-1830-90C (Army C-47B | DC3C-S1C3G | DC3C-SC3G | DC3D-R-1830-90C (Army C-117A) | Navy R4D-1 | Navy R4D-3 | Navy R4D-6) | R4D-4) | R4D-5) | Current, Feb 2021 | — |
| BTC511515-4 | Goodyear 511515-4 | Small Ring Bearing Closure Flat | Boeing -S4C4G (Army C-47 | C-41A | C-47A | C-48 | C-48A | C-52 | C-52A | C-52B | C-52C | C-53 | C-53B | C-53C | C-53D | C-68 | DC3A-S1C3G (Army C-41 | DC3A-S1CG | DC3A-S4C4G | DC3A-SC3G | DC3A-SCG | DC3C-R-1830-90C (Army C-47B | DC3C-S1C3G | DC3C-SC3G | DC3D-R-1830-90C (Army C-117A) | Navy R4D-1 | Navy R4D-3 | Navy R4D-6) | R4D-4) | R4D-5) | Current, Feb 2021 | — |
| BTC511515-5 | Goodyear 511515-5 | Large Ring Bearing Closure Flat | Boeing -S4C4G (Army C-47 | C-41A | C-47A | C-48 | C-48A | C-52 | C-52A | C-52B | C-52C | C-53 | C-53B | C-53C | C-53D | C-68 | DC3A-S1C3G (Army C-41 | DC3A-S1CG | DC3A-S4C4G | DC3A-SC3G | DC3A-SCG | DC3C-R-1830-90C (Army C-47B | DC3C-S1C3G | DC3C-SC3G | DC3D-R-1830-90C (Army C-117A) | Navy R4D-1 | Navy R4D-3 | Navy R4D-6) | R4D-4) | R4D-5) | Current, Feb 2021 | — |
| BTC511598-3 | Goodyear 511598-3 | Small Ring Bearing Retainer | Boeing -S4C4G (Army C-47 | C-41A | C-47A | C-48 | C-48A | C-52 | C-52A | C-52B | C-52C | C-53 | C-53B | C-53C | C-53D | C-68 | DC3A-S1C3G (Army C-41 | DC3A-S1CG | DC3A-S4C4G | DC3A-SC3G | DC3A-SCG | DC3C-R-1830-90C (Army C-47B | DC3C-S1C3G | DC3C-SC3G | DC3D-R-1830-90C (Army C-117A) | Navy R4D-1 | Navy R4D-3 | Navy R4D-6) | R4D-4) | R4D-5) | Current, Feb 2021 | — |
| BTC511598-4 | Goodyear 511598-4 | Large Ring Bearing Retainer | Boeing -S4C4G (Army C-47 | C-41A | C-47A | C-48 | C-48A | C-52 | C-52A | C-52B | C-52C | C-53 | C-53B | C-53C | C-53D | C-68 | DC3A-S1C3G (Army C-41 | DC3A-S1CG | DC3A-S4C4G | DC3A-SC3G | DC3A-SCG | DC3C-R-1830-90C (Army C-47B | DC3C-S1C3G | DC3C-SC3G | DC3D-R-1830-90C (Army C-117A) | Navy R4D-1 | Navy R4D-3 | Navy R4D-6) | R4D-4) | R4D-5) | Current, Feb 2021 | — |
| BTC5116145-12 | 5116145-12 | Upper Frame F.S. 690 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5116145-14 | 5116145-14 | Extension Frame Assembly F.S. 690 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5116364-10 | 5116364-10 | Doubler Frame F.S. 651 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5116364-18 | 5116364 | Frame Assembly F.S. 651 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5116387-10 | 5116387-10 | Extension Frame Assy. F.S. 636 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5116387-14 | 5116387-14 | L.H. Upper Frame F.S. 636 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5116387-15 | 5116387-15 | R.H. Upper Frame F.S. 636 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5116388-10 | 5116388-10 | Upper Frame F.S. 677 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5116388-20 | 5112965-20 | Extension Frame F.S. 677 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5116868-10 | 5116868-10 | Upper Frame F.S. 664 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5116868-18 | 5116868-18 | Frame Assembly F.S. 664 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5118022 | 5118022 | Bracket Assembly Stabilizer Support F.S. 623 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5118108-16 | 5118108-16 | Extension Frame Assembly F.S. 703 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5118108-8 | 5118108-8 | Upper Frame F.S. 703 | Boeing DC3C-SC3G, -S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Feb 2014 | — |
| BTC5135865-05-400 | 5135865-05-400 | Chevron Seal Tail Wheel Strut | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Apr 2018 | — |
| BTC5135865-06-024 | 5135865-06-024 | Chevron Seal Flap Actuator End Cap | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Apr 2018 | — |
| BTC5135865-06-110 | 5135865-06-110 | Chevron Seal Flap Actuator Cylinder | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Apr 2018 | — |
| BTC5135865-06-116 | 5135865-06-116 | Chevron Seal Retract Cylinder | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Apr 2018 | — |
| BTC5135865-06-126 | 5135865-06-126 | Chevron Seal Retract Cylinder | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Apr 2018 | — |
| BTC5139196 | 5139196 | Fuselage Frame L.H. Upper F.S. 479.5 | Mcdonnell Douglas Corporation DC3C-SC3G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Sep 2011 | — |
| BTC5139197 | 5139197 | Fuselage Frame L.H. Upper F.S. 506 | Mcdonnell Douglas Corporation DC3C-SC3G DC3CS1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5) DC3C-R-1830-90C (Army C47B, Navy R4D-6) | Current, Sep 2011 | — |
| BTC5139213-2 | 5139213-2 | Fuselage Frame Left Hand Lower Aft F.S.520/524 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2015 | — |
| BTC5139213-4 | 5139213-4 | Fuselage Frame Right Hand Lower Aft F.S.520/524 | Boeing DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2015 | — |
| BTC5139876 | 5139876 | Fuselage Frame Stub F.S. 528 | Boeing DC3C-SC3G, DC3C-S1C3G, -S4C4G, (Army C47, C47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C, (Army C47B, Navy R4D-6) | Current, Nov 2013 | — |
| BTC53926 | 53926 | Bolt Shock Strut | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Mar 2020 | — |
| BTC9510882 | 9510882 | Key Brake Disc Drive | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Apr 2018 | — |
| BTC9511099 | 9511099 | Pin, Self Adjusting | Boeing -S4C4G (Army C-47 | C-41A | C-47A | C-48 | C-48A | C-52 | C-52A | C-52B | C-52C | C-53 | C-53B | C-53C | C-53D | C-68 | DC3A-S1C3G (Army C-41 | DC3A-S1CG | DC3A-S4C4G | DC3A-SC3G | DC3A-SCG | DC3C-R-1830-90C (Army C-47B | DC3C-S1C3G | DC3C-SC3G | DC3D-R-1830-90C (Army C-117A) | Navy R4D-1 | Navy R4D-3 | Navy R4D-6) | R4D-4) | R4D-5) | Current, Dec 2020 | — |
| BTC9530854 | 9530854 | Disc Brake | Boeing DC3A-SCG, DC3A-SC3G, DC3A-S1CG, DC3A-S1C3G (Army C-41, C-41A, C-48, C-48A, C-52, C-52A, C-52B, C-52C, C-53, C-53B, C-53C, C-53D, C-68, Navy R4D-3, R4D-4), DC3A-S4C4G, DC3C-SC3G, DC3C-S1C3G, -S4C4G (Army C-47, C-47A, Navy R4D-1, R4D-5), DC3C-R-1830-90C (Army C-47B, Navy R4D-6), DC3D-R-1830-90C (Army C-117A) | Current, Apr 2018 | — |
Sell any of these? List it free and this table names you, as does the page of every OEM number it replaces.
Source: the FAA PMA database, refreshed weekly. A PMA part is approved for the specific eligibility on its FAA record; whether it may be installed on a particular aircraft, engine or component is the installer's determination.