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

ST09599SC

Install a Digital Flight Data Recorder Expanded Parameter Upgrade for a Teledyne P/N 2227000-59B, ARINC 717 Digital Flight Data Acquisition Unit (DFDAU). Held by Aircraft Systems & Mfg, which holds 60 approved modifications in all. Last revised February 15, 2000. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
The Boeing Company; The Boeing Company
Models
767-300 Series, 767-200 Series
Type certificates
A1NM, A1NM
On this site
Boeing 767 584 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.