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

SA8103SW-D

Modification of the existing air cycle machine and air distribution ducting installations to reduce cockpit and cabin noise and to improve equipment and cabin cooling. Held by Flight Inspection Maintenance Division, Das11Sw, Avn-300, which holds 2 approved modifications in all. Last revised March 21, 2003. System: cabin, seats and restraints.

What it applies to

Kind of product
Aircraft
Design holder
Learjet Inc.
Models
60
Type certificate
A10CE
On this site
Learjet 60 239 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 20, 2026.