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Avionics

STC ST00503DE-D

FAA DRS lists ST00503DE-D as Current · Reissued, held by Learjet Inc., for Learjet Learjet 55B and Learjet Learjet 55C. Recorded change: Installation of Honeywell MK-VII Enhanced Ground Proximity Warning System (EGPWS) with windshear warning displayed on aircraft EFIS. Snapshot dated June 30, 2026.

FAA-listed holder
Learjet Inc.
Aircraft configurations
2
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of Honeywell MK-VII Enhanced Ground Proximity Warning System (EGPWS) with windshear warning displayed on aircraft EFIS.

ST00503DE-D identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.

Applicability

Aircraft named in FAA DRS

Named aircraft: Learjet Learjet 55B and Learjet Learjet 55C. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Learjet Learjet 55BA10CELearjet Learjet 55CA10CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Learjet Learjet 55B and Learjet Learjet 55C model, serial range, and configuration?
  2. 02Which part numbers, software versions, interfaces, and manual changes apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

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