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Safety and emergency equipment

STC ST04556CH

FAA DRS lists ST04556CH as Current · Reissued, held by Citadel Completions LLC, for Boeing 737-600 Series, Boeing 737-700 Series, and Boeing 737-800 Series, and 2 more aircraft configurations. Recorded change: Installation of a Crew Oxygen Shutoff Valve in accordance with Citadel Completions. LLC. Master Data List 7097-MDL-002, Revision (E), dated 27 JAN 2022, or later FAA Approved Revision.\nFAA Approved Aircraft Flight Manual Supplement document number 7097-AFMS-002 Revision (A),\n<hued 14 JAN 2022, or later FAA appioved revision is a required part of this modification.\nThe aircraft must be maintained in accordance with FAA approved Instructions for Continued Aiiworthiness, 7097-ICAS-002 Revision {IR) dared I I JAN 2022, or later' FAA approved revision in addition to the basic airplane maintenance manuals. Snapshot dated June 30, 2026.

FAA-listed holder
Citadel Completions LLC
Aircraft configurations
5
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Installation of a Crew Oxygen Shutoff Valve in accordance with Citadel Completions. LLC. Master Data List 7097-MDL-002, Revision (E), dated 27 JAN 2022, or later FAA Approved Revision.\nFAA Approved Aircraft Flight Manual Supplement document number 7097-AFMS-002 Revision (A),\n<hued 14 JAN 2022, or later FAA appioved revision is a required part of this modification.\nThe aircraft must be maintained in accordance with FAA approved Instructions for Continued Aiiworthiness, 7097-ICAS-002 Revision {IR) dared I I JAN 2022, or later' FAA approved revision in addition to the basic airplane maintenance manuals.

ST04556CH 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 737-600 Series, Boeing 737-700 Series, and Boeing 737-800 Series, and 2 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 737-600 SeriesA16WEBoeing 737-700 SeriesA16WEBoeing 737-800 SeriesA16WEBoeing 737-900 SeriesA16WEBoeing 737-900ER SeriesA16WE

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Boeing 737-600 Series and Boeing 737-700 Series, and 3 more aircraft configurations model, serial range, and configuration?
  2. 02Which equipment, inspection intervals, procedures, and limitations 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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