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

SA3921NM

Installation of Driessen Cabin Service Carts, P/N's DLH-717-003, Waste Cart, DLH 772, Bar Cart, and DLH 717-002, Meal Cart in Sell Galley's P/N's 0477-11H-0000, 0477-22H-0000, 0477-23E-0000, 0477-35H-0000,and 0477-38H-0000. Held by Driessen Aircraft Interior Systems, INC. Last revised October 30, 1989. System: cabin, seats and restraints.

What it applies to

Kind of product
Aircraft
Design holder
The Boeing Company; The Boeing Company
Models
747-100 Series, 747-200 Series
Type certificates
A20WE, A20WE
On this site
Boeing 747 192 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.