ST11270DS
Modification of the passenger cabin of the Boeing 777-323ER aircraft to install new business class seats, new premium economy seats, new economy seats, new class dividers, new and modified closets, new and modified galleys, new and modified lavatories, and new entertainment and connectivity systems. (777-323ER). Held by American Airlines, INC. Maintenance and Engineering (M&E) Division, which holds 2 approved modifications in all. Last revised August 6, 2026. System: cabin, seats and restraints.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company
- Models
- 777-300ER Series
- Type certificate
- T00001SE
- On this site
- Boeing 777 358 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.