ST00159BO
Installation of Honeywell MK VIII Enhanced Ground Proximity Warning System (EGPWS) with optional terrain display. Held by Pro Star Aviation, LLC, which holds 51 approved modifications in all. Last revised September 13, 2018. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Learjet Inc.; Learjet Inc.; Learjet Inc.
- Models
- Learjet 31A, Learjet 31 Series, Learjet 31
- Type certificates
- 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.