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Avionics

STC ST09861AC

FAA DRS lists ST09861AC as Current · Amended, held by Aircraft Systems and Manufacturing Inc, for Boeing DC-9-81 (MD-81), Boeing DC-9-82 (MD-82), and Boeing DC-9-83 (MD-83), and 2 more aircraft configurations. Recorded change: Installation of Extended Squitter Mode S Transponders and GPS Position Source. Snapshot dated June 30, 2026.

FAA-listed holder
Aircraft Systems and Manufacturing Inc
Aircraft configurations
5
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Installation of Extended Squitter Mode S Transponders and GPS Position Source.

ST09861AC 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: Boeing DC-9-81 (MD-81), Boeing DC-9-82 (MD-82), and Boeing DC-9-83 (MD-83), and 2 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing DC-9-81 (MD-81)A6WEBoeing DC-9-82 (MD-82)A6WEBoeing DC-9-83 (MD-83)A6WEBoeing DC-9-87 (MD-87)A6WEBoeing MD-88A6WE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing DC-9-81 (MD-81) and Boeing DC-9-82 (MD-82), and 3 more aircraft configurations 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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