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

ST00934LA-D

Modifies the aircraft to remove two rows (eighteen seat places) of Recaro TSO-C127 seats from the forward economy class zone. The class dividers between business and economy classes will be relocated aft by 30/31 inches (outboard/inboard). The business class seats are increased in pitch from 48 to 55 inches (excluding rows 8 and 9). The six crew rest seats and curtain located within the economy class area will be relocated aft with the dividers. The remaining economy class seat rows forward of door three will be increased in pitch from 31 to either 34 or 35 inches. The remaining economy seats will not be affected. The final airplane seat configuration count will be 12F/49B/197Y. The installation is in accordance with DAS-1-WE Approved United Air Lines Master Document List No. 00934, dated December 12, 2000, or later FAA approved revisions. STC amended to relocate seat row 8 to increase the seat pitch between seat rows 8 and 9 from 48 inches to 53 inches. Also replaces the existing First Class/Business Class divider with a class divider that will provide sufficient distance to the new location of seat row 8. The final aircraft seat configuration count will be 12F/49B/197Y. The installation is in accordance with DAS-1-WE Approved United Air Lines Master Document List No. 00934, Revision A, dated February 19, 2001, or later approved revisions. Held by United Airlines INC, which holds 520 approved modifications in all. Last revised November 30, 2011. System: cabin, seats and restraints.

What it applies to

Kind of product
Aircraft
Design holder
The Boeing Company
Models
777-200 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 22, 2026.