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

SA04250CH

This STC is for the Installation of SRS Aviation LLC Combination Instrument Panels in accordance with SRS Aviation LLC Master Drawing List, Document 9.0 Master Drawing List Rev Int. dated March 1, 2016, or later FAA approved revisions. Held by Srs Aviation LLC.. Last revised May 26, 2021. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.
Models
56TC, 58, 95-A55, 95-B55, 95-C55, A56TC, D55, D95A, E55, E95, 58P, 58PA, 58TC, 58TCA
Type certificates
3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, 3A16, A23CE, A23CE, A23CE, A23CE
On this site
Beechcraft 58 Baron 1,295 registered
Beechcraft 95 Travel Air and Baron 55 1,244 registered
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.