ST09870SC

Installation of Mechanical Window Shades. Held by Lou Martin & Associates, which holds 8 approved modifications in all. Last revised May 28, 2001. 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; Naval Aircraft Factory
Models: 737 Series, 737-100 Series, 737-300 Series, 737-800 Series, 737-400 Series, 737-500 Series, 737-600 Series, 737-200 Series, 737-200C Series, 737-700 Series, 727-100C Series, 727-200 Series, 727-200F Series, 727C Series, 727 Series, 727-100 Series, Navy N3N-3
Type certificates: A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A3WE, A3WE, A3WE, A3WE, A3WE, A3WE, A-2-569
On this site: Boeing 727 37 registered
Boeing 737 2,887 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 12, 2026.