ST04556CH
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. Held by Citadel Completions LLC, which holds 2 approved modifications in all. Last revised February 10, 2022. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company
- Models
- 737-600 Series, 737-700 Series, 737-800 Series, 737-900 Series, 737-900ER Series
- Type certificates
- A16WE, A16WE, A16WE, A16WE, A16WE
- On this site
- Boeing 737 2,892 registered
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 20, 2026.