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.