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Aircraft STC directory

Boeing 727C Series STCs

The Jun 30, 2026 FAA DRS snapshot contains 67 selected supplemental type certificates with status Current whose public applicability data names the Boeing 727C Series. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

67
listed Current at snapshot
44
holder directories
10
modification categories
Jun 23, 2026
latest recorded revision

Modification demand surface

Other aircraft modifications22
Avionics13
Cargo and special mission8
Safety and emergency equipment7
Cabin and interiors6
Fuel systems4
Engine and powerplant3
Aircraft structures2
Flight controls1
Aircraft connectivity1

Recorded holders

United Airlines Inc11Rockwell Collins Inc3Canard Aerospace Corporation3LMI Aerospace2Aviation Technical Services2Standard Aero2Ancra International LLC2ACSS (Aviation Communication and Surveillance Syst2Dan Buzz & Associates LLC1AeroMech Incorporated1The Boeing Company1Bruce Aerospace Inc.1Amphenol Cable and Interconnect Technologies Inc.1Jetaire Aerospace LLC1Honeywell International Inc1Safran Cabin Inc.1The NORDAM Group LLC1Pro Star Aviation, LLC1Quiet Wing Corporation1Alloy Aerospace Inc1

Recently revised 727C Series STCs

Showing the 67 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

SA3079WESafety and emergency equipment

Installation of Collins FPC-75 Ground Proximity Warning System Computer P/N 622-2615-012 or P/N 622-2615-212 or P/N 622-2615-213, in airplanes with provisions installed per United Air Lines DAS STC SA2826WE-D revised April 3, 1975, or later approved revisions, and United Air Lines, DAS-1-WE, Approved Drawing List No. 3079 dated February 2, 1979, or later FAA approved revisions. United Air Lines FAA Approved Airplane Flight Manual Supplements dated March 17, 1976, or later approved revisions to Boeing Airplane Flight Manual Documents D6-8727.1/.1C and DC-8728.1, is required as part of this installation.

FAA holder: United Airlines Inc

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SA3350WE-DOther aircraft modifications

The air data system is revised in accordance with United Air Lines,\nDAS-1-WE Approved Drawing List No. 3350 dated July 20, 1979, or later FAA approved revisions to the following configuration:\n1.\tThe Captain's and First Officer's altimeters are Harowe P/N 2050 Series electric indicators.\n2.\tThe No. 1 air data computer is a Honeywell P/N HG180U-742 (727-222 only) or a United Air Lines P/N 9F-9058-505 (727-22, -22C only).\n3.\tThe No. 2 air data computer is a Harowe P/N 4019-1, -2, or -5. On the 727-222 only, a Honeywell\n HG180OU-742, HG180V2-9F9058-506, HG180V1-9F9057-504.

FAA holder: United Airlines Inc

View record