Skip to content
Other aircraft modifications

STC ST04277NY

FAA DRS lists ST04277NY as Current · Issued, held by STC Twenty One, Ltd., for Boeing 757-200 Series and Boeing 757-300 Series. Recorded change: Installation of Air Conditioning Filter. Snapshot dated June 30, 2026.

FAA-listed holder
STC Twenty One, Ltd.
Aircraft configurations
2
FAA revision date
FAA status
Current · Issued

Recorded modification

What the FAA record covers

Installation of Air Conditioning Filter.

ST04277NY 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 757-200 Series and Boeing 757-300 Series. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 757-200 SeriesA2NMBoeing 757-300 SeriesA2NM

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 757-200 Series and Boeing 757-300 Series 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?

Related other aircraft modifications STCs