ST657SO
Installation of Mace Galley Model No. 101 in aft passenger compartment and Mace Galley Model No. 102 in forward passenger compartment. (720-023B and 720-030B). Held by B/E Aerospace, which holds 123 approved modifications in all. Last revised August 27, 2002. System: cabin, seats and restraints.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company; The Boeing Company
- Models
- 720 Series, 720B Series
- Type certificates
- 4A28, 4A28
- 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 7, 2026.