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

ST00392WI

Replacement assembly closeout for baggage pin. Held by Midcoast Aviation INC, which holds 227 approved modifications in all. Last revised January 12, 1996. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Aerospatiale (Societe Nationale Industrielle Aerospatiale)
Models
ATR-42 Series
Type certificate
A53EU
On this site
Aerospatiale/Aeritalia ATR 42 16 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.