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

ST01663NY

Modification of existing Mode S transponders by installing Honeywell/ACSS P/N 7517800-10004 ATDL transponders. Held by Delta Engineering, which holds 199 approved modifications in all. Last revised April 18, 2003. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Airbus; Airbus; Airbus; Airbus; Airbus; Airbus; Airbus
Models
A300B4-601, A300B4-603, A300B4-605R, A300B4-620, A300B4-622R, A300F4-605R, A300F4-622R
Type certificates
A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU
On this site
Airbus A300 120 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 7, 2026.