The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · amended

SA7012NM-D

Installation of wing fuel access panels. Held by Tass INC, which holds 96 approved modifications in all. Last revised May 3, 2012. System: airframe structure.

What it applies to

Kind of product
Aircraft
Design holder
The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company
Models
727-100 Series, 727-100C Series, 727-200 Series, 727-200F Series, 727 Series, 727C Series, 737-100 Series, 737-200 Series, 737-200C Series, 737-300 Series, 737-400 Series, 737-500 Series, 737-600 Series, 737-700 Series, 737-700C Series, 737-800 Series, 737-900 Series, 737-900ER Series, 747-100 Series, 747-100B Series, 747-100B SUD Series, 747-200B Series, 747-200C Series, 747-200F Series, 747-300 Series, 747-400 Series, 747-400D Series, 747-400F Series, 747-8 Series, 747-8F Series, 747SP Series, 747SR Series, 757-200 Series, 757-200CB Series, 757-200PF Series, 757-300 Series, 767-200...
Type certificates
A3WE, A3WE, A3WE, A3WE, A3WE, A3WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A2NM, A2NM, A2NM, A2NM, A1NM, A1NM, A1NM, A1NM
On this site
Boeing 727 37 registered
Boeing 737 2,887 registered
Boeing 747 192 registered
Boeing 757 440 registered
Boeing 767 583 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 7, 2026.