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

ST00779SE

Modification and reinforcement of fuselage structure from a passenger configuration to a freighter configuration with a "Class E" cargo compartment. Held by Hamilton/Timco Cargo Conversions LLC, which holds 2 approved modifications in all. Last revised December 9, 2009. System: cabin, seats and restraints.

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.