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Aircraft STC directory

McDonnell Douglas DC-9-81 STCs

The Jun 30, 2026 FAA DRS snapshot contains 38 selected supplemental type certificates with status Current whose public applicability data names the McDonnell Douglas DC-9-81. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

38
listed Current at snapshot
22
holder directories
9
modification categories
Jul 18, 2025
latest recorded revision

Modification demand surface

Other aircraft modifications15Aircraft structures6Avionics5Aircraft connectivity3Cargo and special mission3Cabin and interiors2Engine and powerplant2Safety and emergency equipment1Landing gear and brakes1

Recorded holders

Amphenol Cable and Interconnect Technologies Inc.5Canard Aerospace Corporation3Safran Cabin Inc.2Aircraft Systems & Mfg2HAECO Cabin Solutions LLC1Purolator Facet, Inc1Jetaire Aerospace LLC1Ontic Engineering and Manufacturing Inc.1Audio International1U.S. Technical Consultants Inc.1Honeywell International Inc1Aviation Communication and Surveillance Systems (ACSS) LLC1Lufthansa Technik AG1Pratt & Whitney1Aerovias de Mexico S.A. de C.V.1Aircraft Food Service Equipment Repair1Rockwell Collins Inc1Midwest Express Airlines1Global Aviation1AeroControlex Group TransDigm Inc1

Recently revised DC-9-81 STCs

Showing the 38 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

ST01280WI-DAvionics

Modification of a Collins GNLS-910 GPS Flight Management System Installation with BVR Aero Precision Data Concentrator Unit(s), BVR type/part number 280650 (Collins, 270-2578-060) to a Collins GNLS-910 GPS Flight Management System Installation with Collins DCU-2000 Data Concentrator Unit(s), Collins part number 822-1517-003 (BVR type/part number 280650) in accordance with Collins Drawing Index RCA-0082-001, Revision -, dated October 26, 2004, or later FAA approved revision.

FAA holder: Rockwell Collins Inc

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SA3937NMOther aircraft modifications

Installation of Bell Industries Piston-Shoe Sub-assembly, Part No. 700001 as a replacement part for Sundstrand Part No. 728638, 700631, or SD1334 when used in Sundstrand Model No. 60AGD04 Constant Speed Drives (CSD). Part No. 700001 to be in accordance with Bell Industries Drawing No. 700001-A, -C, -D, -H, -J, and -L, Revision "A", dated December 17, 1984, or later FAA approved revisions. See continuation sheet.

FAA holder: California Precision Hydraulics Inc

View record