ST01835NY
Installation of Enhanced Security Cockpit Doors. Held by Tag Aerospace INC. (Canada), which holds 2 approved modifications in all. Last revised November 26, 2003. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Short Brothers PLC; Short Brothers PLC
- Models
- SD3-30, SD3-60
- Type certificates
- A41EU, A41EU
- On this site
- Short Bros SD3 41 registered
Short Brothers Plc SD3 6 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 20, 2026.