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

ST04359CH

Reduction of payload to 7500 lbs. Installation of placard per Rezich & Rezich drawing RR004, Revision NONE, dated August 25, 2017,, or later FAA approved revision. Held by Rezich and Rezich Aviation Consulting INC., which holds 4 approved modifications in all. Last revised December 6, 2018. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
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.; Maryland Air Industries Inc.; Maryland Air Industries Inc.; Maryland Air Industries Inc.; Maryland Air Industries Inc.; Maryland Air Industries Inc.
Models
F-27, F-27A, F-27B, F-27F, F-27G, F-27J, F-27M, FH-227, FH-227B, FH-227C, FH-227D, FH-227E
Type certificates
7A1, 7A1, 7A1, 7A1, 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.