SA4210WE
Installation of a Safe Flight Instrument Corporation Speed Command Attitude and Thrust (SCAT) Computer and a Windshear Monitor Computer in accordance with United Air Lines Change Order Authorization (COA) No. T-3306 dated May 1, 1980, plus EVAs No. 48-1590 and 48-1591. United Air Lines FAA Approved Airplane Flight Manual Supplements (two) dated September 18, 1980, or later FAA approved revisions to Boeing Airplane Flight Manual Document No. D6-13703 are required as a part of this installation. Held by United Airlines INC, which holds 520 approved modifications in all. Last revised November 30, 2011. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company
- Models
- 747-100 Series
- Type certificate
- A20WE
- On this site
- Boeing 747 192 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 21, 2026.