ST00395AT
Installation of a first class and 175-tourist class seating configuration using Aero Design Services master drawing list AB93-1089, Rev A, dtd 12/15/93, or later FAA approved revision. FAA approved AFM Supplement dtd 12/15/93 is a required part of this STC only when the airplane is equipped with alternate (dual) maximum operating airspeed capability (350/390 KIAS). Held by Aero Design Services, INC, which holds 22 approved modifications in all. Last revised June 15, 2001. 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 20, 2026.