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Aircraft STC directory

Boeing 737-300 Series STCs

The Jun 30, 2026 FAA DRS snapshot contains 522 selected supplemental type certificates with status Current whose public applicability data names the Boeing 737-300 Series. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

522
listed Current at snapshot
154
holder directories
13
modification categories
Mar 30, 2026
latest recorded revision

Modification demand surface

Other aircraft modifications216Cabin and interiors114Avionics64Aircraft structures27Aircraft connectivity23Safety and emergency equipment23Fuel systems20Cargo and special mission19Electrical systems6Landing gear and brakes5Engine and powerplant3Aircraft performance1Flight controls1

Recorded holders

Honeywell International Inc23Safran Cabin Inc.22American Airlines Inc18LMI Aerospace17United Airlines Inc17Delta Airlines Inc17Driessen Aircraft Interior Systems, Inc DBA Zodiac Galleys USA Inc16Rockwell Collins Inc15TASS Inc15Cascade Aerospace Inc.10Pemco Aeroplex Inc10Amphenol Cable and Interconnect Technologies Inc.9Avionics Support Group Inc.7LB Aircraft Engineering LLC7Woven Electronics LLC7LB Aircraft Engineering Inc6Teledyne Controls6Ontic Engineering and Manufacturing Inc.6Leading Edge Group LLC, The6Archeion Holdings LLC5

Recently revised 737-300 Series STCs

Showing the 100 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

ST03355ATAvionics

Dual Installation of Universal Avionics EFI-890R EFIS on Boeing 737-300/-400 aircraft series. Installation includes 4 Flat Panel Multi Function Displays to provide a Primary Flight Display (PFD) and a Nav Display (ND) for the pilot and co-pilot, as replacement of the existing indicators, two Data Concentrator Units to interface discretes and FMS data busses, and two Vision-1 Computers that hold the terrain data base which provide Egocentric and Exocentric views on the PFD/ND respectively. This installation is in accordance with ARC Avionics Master Data List 750-053005, Rev-H, dated November 24, 2009, or later FAA approved rev's.

FAA holder: LB Aircraft Engineering LLC

View record