ST10278SC
Installation of a single Honeywell KGP-860 Class B Enhanced Ground Proximity Warning System (EGPWS) in accordance with the Master Document List BAS55010057, Rev. A, dated August 30, 2004, or later FAA approved revision. FAA approved Airplane Flight Manual Supplement BAS55040030, Rev. NC, dated September 1, 2004, or later FAA approved revision is required. Held by Learjet INC., which holds 376 approved modifications in all. Last revised September 1, 2004. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Learjet Inc.; Learjet Inc.; Learjet Inc.
- Models
- 55, 55B, 55C
- Type certificates
- A10CE, A10CE, A10CE
- On this site
- Learjet 55 67 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 21, 2026.