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

SE51WE

Installation of two (2) Roto-Master (Rajay) P/N 600573-00 (RJ0326, RJ0326-1) or 600576-00 (RJ0326-2) (or any combination thereof) Turbochargers. Held by Talco Aviation, which holds 49 approved modifications in all. Last revised August 31, 2023. System: engine.

What it applies to

Kind of product
Engine
Design holder
Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation
Models
IO-720-A1B, IO-720-A1A
Type certificates
1E15, 1E15
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.