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

ST00117SE

For operation up to 197,700 lb maximum taxi weight, Increase in the maximum zero fuel weight to 155,000 lbs and increase in the maximum landing weight up to 164,000 lbs. Held by Altair Holdings Limited, which holds 9 approved modifications in all. Last revised June 6, 2001. System: other and general.

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.