SA2988SW
Interior modification: Installation of an executive interior and odification of flight avionics system. Exterior modification: Add two ADF Loop Antennas, FS 420 and 460, one transponder antenna, 237Z1, FS 410, one at AT-460 VHF antenna and one TAT probe. Held by L-3 Communications Integrated Systems LP, which holds 175 approved modifications in all. Last revised July 29, 2002. System: cabin, seats and restraints.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company
- Models
- 707-100 Long Body
- Type certificate
- 4A21
- On this site
- Boeing 707 9 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 20, 2026.