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

SA2828WE-D

Installation of Collins FPC-75 Ground Proximity Warning System Computer part number 622-2615-012 or 622-2615-212 in conformance with United Air Lines, DAS-1-WE, Approved Drawing List for STC No. SA2828WE-D dated February 26, 1979, or later FAA approved revisions. Also required as part of this installation is United Air Lines FAA Approved Flight Manual Supplement dated August 30, 1976, or later FAA approved revisions to Boeing Flight Manual Document No. D6-8737-100/-200. Held by United Airlines INC, which holds 520 approved modifications in all. Last revised November 30, 2011. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
The Boeing Company; The Boeing Company
Models
737-100 Series, 737-200 Series
Type certificates
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 22, 2026.