SE94WE
Installation of oil fitting(AN-823-5D) in rocker box cover. Held by Airwolf Filter Corporation, which holds 61 approved modifications in all. Last revised July 16, 2020. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Continental Motors; Continental Motors; Continental Motors; Continental Motors; Continental Motors; Continental Motors; Continental Motors; Continental Motors; Continental Motors; Continental Motors; Continental Motors
- Models
- IO-520-A, IO-520-B, IO-520-BA, IO-520-C, IO-520-D, IO-520-E, IO-520-F, IO-520-J, IO-520-K, IO-520-L, IO-520-M
- Type certificates
- E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, 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 20, 2026.