SA5460NM
Installation of Universal Navigation Corp. (UNC) UNS-1B Flight managment system (software version SCN 400.1) with VOR/DME, OSS and GPS sensors interfaced with HPU-74(EHSI-74) and FC-530 autopilot/flight director. Held by Learjet INC, which holds 538 approved modifications in all. Last revised August 5, 1991. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.
- Models
- Learjet 36A, Learjet 36, Learjet 35A (C-21A), Learjet 35
- Type certificates
- 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.