ST01326WI
Installation of an Aux Window Blower System Upgrade on Learjet Model 31A-144. Data required: 1) LJSC Ltd. Master Document List MDL4049-25207, Revision A, dated March 28, 2005; and 2) LJSC Ltd. Airplane Flight Manual Supplement FMS4049-25207, Revision IR, dated May 4, 2005; or later FAA approved revisions to (1) or (2). Held by Global Aviation Technologies, which holds 10 approved modifications in all. Last revised November 15, 2011. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Learjet Inc.
- Models
- 31A
- Type certificate
- A10CE
- On this site
- Learjet 31 119 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.