SE3757SW
Installation of two Rotomaster turbo-chargers, one for each bank of cylinders. Held by Hughes Aviation Services, which holds 5 approved modifications in all. Last revised December 5, 1990. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors
- Models
- IO-520-BA, IO-520-BB, IO-520-B
- Type certificates
- E5CE, E5CE, E5CE
- 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 19, 2026.