SA305NW
Installation of EDO 5250 floats. Held by Jobmaster Company INC, which holds 16 approved modifications in all. Last revised June 15, 1976. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Viking Air Limited; Viking Air Limited; Viking Air Limited
- Models
- DHC-2 Mk.I, DHC-2 Mk.II, DHC-2 Mk.III
- Type certificates
- A-806, A-806, A-806
- On this site
- Dehavilland DHC-2 254 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 5, 2026.