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

SA708EA

Installation of opening in fuselage right hand for emergency exit between fuselage station 226 and fuselage station 253.4. Is approved only for its structural, electrical and mechanical provisions and can be incorporated with STC SA707EA and STC SA709EA. Held by Lockheed Martin Aeronautics Company, which holds 42 approved modifications in all. Last revised April 26, 2004. System: emergency equipment.

What it applies to

Kind of product
Aircraft
Design holder
Lockheed Aircraft Corporation
Models
188C
Type certificate
4A22
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 7, 2026.