SA1931SW
110-place interior for military Advanced Airborne Command Post, lower lobes configured for in-flight work areas, trailing wire antenna, external antennas, revised air conditioning, revised oxygen system, revised cargo doors, revised fluid systems, installation of mission equipment. Held by L-3 Communications Integrated Systems LP, which holds 175 approved modifications in all. Last revised May 31, 2002. System: emergency equipment.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company
- Models
- 747-400 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.