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Other aircraft modifications

STC ST00174WI

FAA DRS lists ST00174WI as Current · Reissued, held by Midcoast Aviation Inc, for Cessna Aircraft 500, Cessna Aircraft 550, and Cessna Aircraft S550. Recorded change: Installation of Bellows assembly in pneumatic system. Snapshot dated June 30, 2026.

FAA-listed holder
Midcoast Aviation Inc
Aircraft configurations
3
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of Bellows assembly in pneumatic system.

ST00174WI 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: Cessna Aircraft 500, Cessna Aircraft 550, and Cessna Aircraft S550. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Cessna Aircraft 500A22CECessna Aircraft 550A22CECessna Aircraft S550A22CE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Cessna Aircraft 500 and Cessna Aircraft 550, and 1 more aircraft configuration model, serial range, and configuration?
  2. 02Which configuration, parts, installation data, limitations, and ICAs 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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