SE741SW
R-1830 rockershaft assemblies. Held by Southwest Airmotive CO. Last revised January 1, 1960. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division
- Models
- R-985 Series, R-1340 Series, Wasp Jr. B-5, Wasp Jr. B-4, Wasp S1H2, Wasp S1H1, Wasp S3H1-G, Wasp S3H1
- Type certificates
- 5E-1, 5E-2, E-123, E-123, E-129, E-129, E-142, E-143
- 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 8, 2026.