SA3777NM
Installation of Pratt and Whitney PT6A-135 engine, Hartzell HC-B3TN-3C/T10282 constant speed propeller and other associated changes. (OTTER DHC-3 (U-1A) normal category landplane only). Held by Vazar INC. Last revised July 12, 2005. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Bombardier Inc.
- Models
- DHC-3
- Type certificate
- A-815
- 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.