ST02647NY-D

Installation of Delta Engineering Synchro's. Held by Delta Engineering, which holds 199 approved modifications in all. Last revised October 28, 2009. System: other and general.

What it applies to

Kind of product: Aircraft
Design holder: Aerospatiale (Societe Nationale Industrielle Aerospatiale); Aerospatiale (Societe Nationale Industrielle Aerospatiale); Aerospatiale (Societe Nationale Industrielle Aerospatiale); Aerospatiale (Societe Nationale Industrielle Aerospatiale); Aerospatiale (Societe Nationale Industrielle Aerospatiale); Aerospatiale (Societe Nationale Industrielle Aerospatiale); Aerospatiale (Societe Nationale Industrielle Aerospatiale); Aerospatiale (Societe Nationale Industrielle Aerospatiale); Aerospatiale (Societe Nationale Industrielle Aerospatiale); Aerospatiale (Societe Nationale Industrielle Aerospatiale); Aerospatiale (Societe Nationale Industrielle Aerospatiale)
Models: ATR42-200, ATR42-300, ATR42-320, ATR42-500, ATR72-101, ATR72-102, ATR72-201, ATR72-202, ATR72-211, ATR72-212, ATR72-212A
Type certificates: A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU
On this site: Aerospatiale/Aeritalia ATR 42 16 registered
Aerospatiale ATR 72 9 registered
Atr-Gie Avions De Trnsp Region ATR42 6 registered
Atr-Gie Avions De Trnsp Rgnl ATR 72 14 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.