SE4607SW
Revise the starter-generator drive spline to provide lubrication with engine oil. Held by Aviall of Texas, INC, which holds 6 approved modifications in all. Last revised February 19, 1982. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.
- Models
- PT6A-25C, PT6A-27, PT6A-29, PT6A-25A, PT6A-36, PT6A-34AG, PT6A-28, PT6A-11AG, PT6A-6B, PT6A-15AG, PT6A-34, PT6A-34B, PT6A-20, PT6A-20A, PT6A-25, PT6A-21, PT6A-20B, PT6A-11, PT6A-6, PT6A-6A, PT6A-6/C20
- Type certificates
- E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA
- 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.