SA553NE
Installation of 425 or 500 U.S. gallon auxiliary fuel system in aft cargo compartment. \nCONFIGURATION 2, is eligible on 737-300 series airplanes S/N 23743 and 23930 through 23937. Held by Leading Edge Group LLC, the, which holds 22 approved modifications in all. Last revised April 27, 2009. System: fuel system.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company; The Boeing Company
- Models
- 737-400 Series, 737-300 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.