SA4233WE
Installation of Global GNS-500A VLF/Omega navigation system with-2 program. Held by Learjet INC, which holds 538 approved modifications in all. Last revised June 22, 1990. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.
- Models
- Learjet 25B, Learjet 36, Learjet 35A (C-21A), Learjet 35, Learjet 24B, Learjet 29, Learjet 28, Learjet 25F, Learjet 25D, Learjet 25C, Learjet 36A, Learjet 24A, Learjet 24C, Learjet 24, Learjet 25A, Learjet 24B-A, Learjet 24D, Learjet 24D-A, Learjet 24E, Learjet 24F, Learjet 24F-A, Learjet 25
- Type certificates
- A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE
- 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.