Avionics Modifications | JetCity Aircraft Engineering and Maintenance
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Avionics Modifications

Avionics Modifications

Current STCs


Learjet 40/45 Primus Elite Enhanced Features

EASA STC No. 10059913


ANAC Brazil STC No. 2019S01-16

ANAC Argentina STC No. CTS1903.06

DGAC Mexico STC No. IA-520/2018


JetCity Engineering is proud to announce the release of the Honeywell Primus Elite™ display system retrofit STC for the Learjet 40 and 45 series aircraft.


The Primus Elite™ STC upgrades the existing Honeywell Primus 1000 cockpit fitted to the Learjet 40 and 45 series aircraft and replaces the DU-870 cathode ray tube displays with the DU-875 liquid crystal displays. The upgrade can be performed as either a ‘drop-in’ modification in the event of a failure of an existing DU-870 display unit or as a complete display system retrofit to upgrade the Primus 1000 display system to the latest technology unlocking the additional features of the DU-875 display units.


Please click here for more information on the Learjet 40/45 Primus Elite‚ STC and special display/STC pricing incentives.




Learjet 40/45 Standby Instrument System Upgrade


FAA STC No. – Currently under FAA validation


The Mid-Continent Instrument and Avionics MD-302 standby attitude module removes the ageing electromechanical standby instruments fitted to the Learjet 40 and 45 series aircraft and replaces them with the high reliability MD-302 solid state standby instrument system reducing aircraft downtime and ongoing maintenance certification costs associated with 24 month RVSM inspections and providing enhanced reliability of the critical standby instruments.


The MD-302 displays symbology is consistent with that of the existing aircraft Electronic Flight which allows for increased situational awareness when scanning between Primary Flight Display formats and the standby instrument system further increasing flight crew safety and awareness.


Boasting an MTBF in excess of 12000 hours* the MD-302 replaces units that frequently appear on reports for most replaced components, as well as allowing ‘on-wing’ calibration of the internal air data sensors preventing costly removal of the standby altimeter during the 24 month FAR 91.411 inspections.


Contact travis@jetcity.com.au for further information and pricing.


For all STC related enquiries please contact:


Mr Travis Stephens
Chief Engineer
T +61 3 9330 1555