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Aircraft STC directory

McDonnell Douglas DC-9-81 (MD-81) STCs

The Jun 30, 2026 FAA DRS snapshot contains 55 selected supplemental type certificates with status Current whose public applicability data names the McDonnell Douglas DC-9-81 (MD-81). Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

55
listed Current at snapshot
36
holder directories
10
modification categories
Jul 18, 2025
latest recorded revision

Modification demand surface

Other aircraft modifications27
Avionics9
Cabin and interiors6
Aircraft connectivity3
Aircraft structures3
Fuel systems2
Cargo and special mission2
Safety and emergency equipment1
Landing gear and brakes1
Engine and powerplant1

Recorded holders

Honeywell International Inc7Amphenol Cable and Interconnect Technologies Inc.4Safran Cabin Inc.3HAECO Cabin Solutions LLC3Page AvJet Corp2Aircraft Modular Products Inc.2Aircraft Systems & Mfg2ASTECH Engineered Products Inc.2Repairtech Intl2Acron Aviation Inc.1TDG Aerospace Inc1Lamart California Inc1ABX Air Incorporated1AIM Aviation Inc1NASCO Aircraft Brake Inc1Teledyne Controls1Aircraft Food Service Equipment Repair1EJM Aerospace Services1Leading Edge Group LLC, The1TASS Inc1

Recently revised DC-9-81 (MD-81) STCs

Showing the 55 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.