ST03071AT
Installation of Avionics System for Reduced Vertical Separation Minimum (RVSM) Provisions into a Boeing 727-200 aircraft in accordance with Avionics Support Group, Inc Master Drawing List (MDL) No. 23509-MDL Rev A, dated 05/27/04, or later FAA approved revision. Held by Avionics Support Group INC, which holds 8 approved modifications in all. Last revised March 22, 2005. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company
- Models
- 727-200 Series
- Type certificate
- A3WE
- On this site
- Boeing 727 37 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 21, 2026.