ST00718WI
Installation of the Dual Universal UNS-1K Flight Management System in the Shorts Brothers PLC, SD 3-30 Variant 200 and SD3-60 Variant 200 Airplanes. Held by Duncan Aviation, INC, which holds 158 approved modifications in all. Last revised April 26, 2000. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Short Brothers PLC; Short Brothers PLC; Short Brothers PLC; Short Brothers PLC
- Models
- SD3-30, SD3-60, SD-3-SHERPA, SD3-60 SHERPA
- Type certificates
- A41EU, A41EU, 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.