The U.S. aircraft register, updated daily
Parts

Trim Ring

No failure report names the trim ring. 44 FAA approvals let 10 companies make a replacement trim ring, Spirit Aerosystems INC holding the most (15).

Approved replacement parts 44 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a trim ring and sell it as an approved part for the models named. These are the companies holding such approvals for a trim ring:

Spirit Aerosystems INC 15Gemini Engineering 10Magee Plastics Company 5Magee Plastics CO 3Aviation Engineering Consultants INC (Aeci) 3Eagle Air Engineering INC 2Aviation Materials Management INC 2Adpma LLC 2Sonic Industries INC 1Dassault Falcon Jet CORP 1

For these models most: Boeing 737 (39), Boeing 757 (31), Dassault FALCON 2000 (1).

MakerPartReplacesFitsGrantedStatus
Magee Plastics CompanyTrim Ring, Window Bezel 121-11534-1( )411N1140-23,411N1140-33The Boeing Company 737-300 Series, 737-400 Series,...2025-08-26current
Magee Plastics CompanyTrim Ring 121-11680-1( )411N1261-1The Boeing Company 737-300 Series, 737-400 Series,...2025-08-26current
Magee Plastics CompanyTrim Ring, Window Bezel 121-11534-1( )411N1140-23, -33Boeing 737-300 Series, 737-400 Series,...2018-06-24current
Magee Plastics CompanyTrim Ring 121-11680-1( )411N1261-1Boeing 737-300 Series, 737-400 Series,...2016-06-30current
Dassault Falcon Jet CORPTrim Ring F90-51752-1Modification PartDassault Aviation Falcon 20002014-10-09current
Spirit Aerosystems INCTRIM RING ASSY 411N1140-36411N1140-36Boeing 737-200 SERIES, 737-300 SERIES,...2014-01-21current
Spirit Aerosystems INCTRIM RING ASSY 411N1140-33A411N1140-33ABoeing 737-200 SERIES, 737-300 SERIES,...2014-01-21current
Spirit Aerosystems INCTRIM RING ASSY 411N1140-33C411N1140-33CBoeing 737-300 SERIES, 737-400 SERIES,...2014-01-21current
Magee Plastics CompanyTrim Ring, Window Bezel 121-11534-1( )411N1140-23, -33Boeing 737-300 Series, 737-400 Series,...2013-07-28current
Aviation Materials Management INCTrim Ring Assy 411N1140-36411N1140-36Boeing 737-200 Series, 737-300 Series,...2013-03-25current
Aviation Materials Management INCTrim Ring Assy 411N1140-14411N1140-14Boeing 737-200 Series, 737-300 Series,...2013-03-25current
Spirit Aerosystems INCTRIM RING - WINDOW 411N1261-1A411N1261-1ABoeing 737-300 SERIES, 737-400 SERIES,...2010-09-13current
Spirit Aerosystems INCTRIM RING 411N1008-3411N1008-3Boeing 737-600 SERIES, 737-700 SERIES,...2010-09-13current
Spirit Aerosystems INCTRIM RING - WINDOW 411N1261-1B411N1261-1BBoeing 737-300 SERIES, 737-400 SERIES,...2010-03-25current
Spirit Aerosystems INCTRIM RING 411N1008-1A411N1008-1ABoeing 737-300 SERIES, 737-400 SERIES,...2009-06-14current
Gemini EngineeringTRIM RING ASSY 411N1140-8A411N1140-8ABoeing 737-200 Series, 737-300 Series,...2009-06-03current
Gemini EngineeringTRIM RING ASSY 411N1140-14411N1140-14Boeing 737-200 Series, 737-300 Series,...2009-06-03current
Gemini EngineeringTRIM RING 411N1008-1A411N1008-1ABoeing 737-300 Series, 737-400 Series,...2009-06-03current
Spirit Aerosystems INCTRIM RING ASSY 411N1140-14411N1140-14Boeing 737-200 SERIES, 737-300 SERIES,...2009-05-17current
Spirit Aerosystems INCTRIM RING ASSY 411N1140-8A411N1140-8ABoeing 737-200 SERIES, 737-300 SERIES,...2009-03-30current
Eagle Air Engineering INCTRIM RING ASSY 411N1140-33A411N1140-33ABoeing 737-200 SERIES, 737-300 SERIES,...2008-10-08current
Eagle Air Engineering INCTRIM RING ASSY 411N1140-33M411N1140-33MBoeing 757-200 SERIES2008-10-08current
Gemini EngineeringTRIM RING 411N1008-1C411N1008-1CBoeing 737-300 Series, 737-400 Series,...2008-08-12current
Gemini EngineeringTRIM RING - WINDOW 411N1261-1A411N1261-1ABoeing 737-300 Series, 737-400 Series,...2008-08-12current
Gemini EngineeringTRIM RING ASSY 411N1140-33C411N1140-33CBoeing 737-300 Series, 737-400 Series,...2008-08-12current
Spirit Aerosystems INCTRIM RING ASSY 411N1140-33A411N1140-33ABoeing 737-200 SERIES, 737-300 SERIES,...2007-12-16current
Spirit Aerosystems INCTRIM RING ASSY 411N1140-36411N1140-36Boeing 737-200 SERIES, 737-300 SERIES,...2007-12-16current
Spirit Aerosystems INCTRIM RING ASSY 411N1140-33C411N1140-33CBoeing 737-300 SERIES, 737-400 SERIES,...2007-12-16current
Spirit Aerosystems INCTRIM RING ASSY 411N1140-33C411N1140-33CBoeing 737-300 SERIES, 737-400 SERIES,...2007-08-02current
Spirit Aerosystems INCTRIM RING ASSY 411N1140-36411N1140-36Boeing 737-200 SERIES, 737-300 SERIES,...2007-08-02current
Spirit Aerosystems INCTRIM RING ASSY 411N1140-33A411N1140-33ABoeing 737-200 SERIES, 737-300 SERIES,...2007-08-02current
Adpma LLCTrim Ring Assy 411N1140-36411N1140-36Boeing 737-200 Series, 737-300 Series,...2007-02-27current
Adpma LLCTrim Ring Assy 411N1140-33A411N1140-33ABoeing 737-200 Series, 737-300 Series,...2007-02-27current
Sonic Industries INCTRIM RING ASSY 411N1140-14411N1140-14Boeing 737-200 SERIES, 737-300 SERIES,...2006-05-15current
Gemini EngineeringTRIM RING ASSY 411N1140-33A411N1140-33ABoeing 737-200 SERIES, 737-300 SERIES,...2005-04-24current
Gemini EngineeringTRIM RING - WINDOW 411N1261-1B411N1261-1BBoeing 737-300 SERIES, 737-400 SERIES,...2005-04-24current
Gemini EngineeringTRIM RING ASSY 411N1140-36411N1140-36Boeing 737-200 SERIES, 737-300 SERIES,...2005-04-24current
Gemini EngineeringTRIM RING ASSY 411N1140-33A411N1140-33ABoeing 737-200 SERIES, 737-300 SERIES,...2004-05-24current
Aviation Engineering Consultants INC (Aeci)Trim Ring AEC-411N1140-( )Boeing P/N 411N1140-( )Boeing B737-200, B757 Series Airplanes.2003-09-10current
Aviation Engineering Consultants INC (Aeci)Trim Ring AEC-411N1140-( )Boeing P/N 411N1140- ( )Boeing B737-300/-400/-500 Series Model Airplanes2003-07-09current
Aviation Engineering Consultants INC (Aeci)Trim Ring AEC-411N1140-( )Boeing P/N 411N1140- ( )Boeing B737-300/-400/-500 Series Model Airplanes2003-07-09current
Magee Plastics COTrim Ring, Window Bezel 121-11534-1A411N1140-23, -33Boeing 737 Series, 757 Series2002-11-04current
Magee Plastics COTrim Ring, Window Bezel 121-11534-1B411N1140-23, -33Boeing 737 Series, 757 Series2002-11-04current
Magee Plastics COTrim Ring, Window Bezel 121-11534-1A, 121-11534-1B411N1140-23, -33Boeing 737 Series 757 Series1999-04-19current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.