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

SA2064WE

Installation of Tridair 88 x 125 inch cargo net P/N 40657, P/N 40850 or P/N 40517, with pallet assembly Tridair P/N 40160 configuration 101 thru 110, 23224-51; Brooks & Perkins P/N 16987 DL; Irwin Industries P/N125010; Heathair P/N AC-10366-1; or Douglas P/N 5776662-505. (727-22C). Held by Brooks & Perkins, INC, which holds 29 approved modifications in all. Last revised May 16, 1975. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
The Boeing Company; McDonnell Douglas Corporation; McDonnell Douglas Corporation
Models
727, DC-8-55, DC-8F-54
Type certificates
A3WE, 4A25, 4A25
On this site
Boeing 727 37 registered
Douglas DC-8 6 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 22, 2026.