The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · issued

ST02533SE

Economy Class Cabin refresh to include revising the seating configuration from 9 to 10 abreast seats, rework of the passenger service units, installation of new class dividers, installation of new in-flight entertainment, refresh of all partitions, monument/partition/stowage refresh and installation of new floor coverings. Held by Northwest Aerospace Technologies INC, which holds 74 approved modifications in all. Last revised April 6, 2018. 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 7, 2026.