The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · reissued

SE96WE

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 Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.
Models
TSIO-520-A, TSIO-520-B, TSIO-520-C, TSIO-520-D, TSIO-520-E, TSIO-520-G, TSIO-520-H, TSIO-520-J, TSIO-520-K, TSIO-520-L, TSIO-520-M, TSIO-520-N, TSIO-520-P, TSIO-520-R
Type certificates
E8CE, E8CE, E8CE, E8CE, E8CE, E8CE, E8CE, E8CE, E8CE, E8CE, E8CE, E8CE, E8CE, E8CE
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.