SE572SW
Installation of Jacobs RAS325A exhaust valve rotocaps. Held by Air Repair INC, which holds 15 approved modifications in all. Last revised November 15, 2021. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Air Repair Inc.; Air Repair Inc.; Air Repair Inc.; Air Repair Inc.; Air Repair Inc.; Air Repair Inc.; Air Repair Inc.; Air Repair Inc. TC; Air Repair Inc. TC; Air Repair Inc. TC
- Models
- R-755A1, R-755A2, R-755A2M, R-755A2M1, R-755B1, R-755B2, R-755B2M, L-4, L-4 Series, L-6 Series
- Type certificates
- E-237, E-237, E-237, E-237, E-237, E-237, E-237, 121, 121, 195
- 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.