SA3-425
Installation of one-piece windshield, electrically heated or bird-proof. Held by Signature Flight Support, which holds 3 approved modifications in all. Last revised September 12, 2002. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation
- Models
- R4D-8, R4D-8Z, Super DC-3, DC3-G102, DC3-G103A, DC3-G202A Series, DC-3 Series, DC3A-SC3G, DC3A-S1CG, DC3A-S4C4G, DC3C-R-1830-90C (Army C-47B), DC3C-R-1830-90C (Navy R4D-6), DC3D-R-1830-90C (Army C-117A), DC3A-S1C3G, DC3A-SCG
- Type certificates
- 6A2, 6A2, 6A2, A-618, A-618, A-618, A-669, A-669, A-669, A-669, A-669, A-669, A-669, A-669, A-669
- On this site
- Douglas DC-3 155 registered
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 22, 2026.