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

ST00384WI

Installation of Keddeg Company P/N 21BC116 Coalescer Assembly. Held by Purolator Facet, INC, which holds 26 approved modifications in all. Last revised October 19, 2017. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Fokker Services B.V.; Fokker Services B.V.; Fokker Services B.V.; Fokker Services B.V.; Fokker Services B.V.; Fokker Services B.V.; Fokker Services B.V.; Fokker Services B.V.; Maryland Air Industries Inc.; Maryland Air Industries Inc.; Maryland Air Industries Inc.; Maryland Air Industries Inc.; Maryland Air Industries Inc.; Maryland Air Industries Inc.; Maryland Air Industries Inc.
Models
F27 Mark 100, F27 Mark 200, F27 Mark 300, F27 Mark 400, F27 Mark 500, F27 Mark 600, F27 Mark 700, F27 Mark 800, F-27, F-27A, F-27B, F-27F, F-27G, F-27J, F-27M
Type certificates
A-817, A-817, A-817, A-817, A-817, A-817, A-817, 7A1, 7A1, 7A1, 7A1, 7A1, 7A1, 7A1, 7A1
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 21, 2026.