The U.S. aircraft register, updated daily
Parts

Backup Ring

0 failure reports named the backup ring in the last ten years, 3 since 1997. 29 FAA approvals let 3 companies make a replacement backup ring, Trelleborg Sealing Solutions holding the most (19).

Reports by year

001222199711998
Reports by year, as a table
reports
19972
19981

Approved replacement parts 29 parts manufacturer approvals

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

Trelleborg Sealing Solutions 19Aaxico Technical Services, INC. 9Jet Avion Corporation A Heico Aerospace Company 1

For these models most: Boeing 777 (16), Boeing 747 (4), Boeing 767 (3), Boeing 707 (2), Boeing 757 (1), Boeing 737 (1), Boeing 727 (1).

MakerPartReplacesFitsGrantedStatus
Aaxico Technical Services, INC.Backup Ring 7451MT2NPTS7451MT2NThe Boeing Company 767-200 Series, 767-300 Series2025-09-04current
Aaxico Technical Services, INC.Backup Ring 7450MT-160-4780ATS7450MT1604780Boeing 777-200 Series 777-300 Series2019-10-18current
Aaxico Technical Services, INC.Backup Ring 731A9MS-2TATS731A9MS2TBoeing 747-200B Series, 747-300 Series,...2018-12-17current
Aaxico Technical Services, INC.Backup Ring 744A8MT-2TATS744A8MT2TBoeing 747-200B Series, 747-300 Series,...2018-12-17current
Aaxico Technical Services, INC.Backup Ring 7333FT-2NATS7333FT2NBoeing 747-200B Series, 747-300 Series,...2018-12-17current
Aaxico Technical Services, INC.BACKUP RING 7447MR-2TATSGreene Tweed 7447MR2TBOEING 777-200, 300 Series2018-04-25current
Aaxico Technical Services, INC.BACKUP RING 7447MT-4780NATSGreene Tweed 7447MT4780NBOEING 777-200, 300 Series2018-04-25current
Aaxico Technical Services, INC.Backup Ring 7447MR-2TATS7447MR2TBoeing 777-200, 300 Series2018-04-25current
Aaxico Technical Services, INC.Backup Ring 7447MT-4780NATS7447MT4780NBoeing 777-200, 300 Series2018-04-25current
Trelleborg Sealing SolutionsBACKUP RING BACR12BM212BACR12BM212THE BOEING COMPANY 707-300 SERIES, 707-300B SERIES,...2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BM212BACR12BM212THE BOEING COMPANY 767-200 SERIES, 767-300 SERIES,...2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BM212BACR12BM212THE BOEING COMPANY 737-300 SERIES, 737-400 SERIES,...2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BM212BACR12BM212THE BOEING COMPANY 747-100 SERIES, 747-200B SERIES,...2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BM212BACR12BM212THE BOEING COMPANY 707-100 LONG BODY, 707-100B LONG...2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BM212BACR12BM212THE BOEING COMPANY 727-200 SERIES2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BM212BACR12BM212THE BOEING COMPANY 777-200 SERIES, 777-300 SERIES2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BM212BACR12BM212THE BOEING COMPANY 757-200 SERIES, 757-200CB SERIES,...2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BP337BACR12BP337THE BOEING COMPANY 777-200 SERIES, 777-300 SERIES2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BP433BACR12BP433THE BOEING COMPANY 777-200 SERIES, 777-300 SERIES2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BP212BACR12BP212THE BOEING COMPANY 777-200 SERIES, 777-300 SERIES2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BP349BACR12BP349THE BOEING COMPANY 777-200 SERIES, 777-300 SERIES2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BM328BACR12BM328THE BOEING COMPANY 777-200 SERIES, 777-300 SERIES2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BP338BACR12BP338THE BOEING COMPANY 777-200 SERIES, 777-300 SERIES2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BP346BACR12BP346THE BOEING COMPANY 777-200 SERIES, 777-300 SERIES2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BP340BACR12BP340THE BOEING COMPANY 777-200 SERIES, 777-300 SERIES2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BP217BACR12BP217THE BOEING COMPANY 777-200 SERIES, 777-300 SERIES2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BP442BACR12BP442THE BOEING COMPANY 777-200 SERIES, 777-300 SERIES2013-04-28current
Trelleborg Sealing SolutionsBACKUP RING BACR12BM328BACR12BM328THE BOEING COMPANY 767-200 SERIES, 767-300 SERIES,...2013-04-28current
Jet Avion Corporation A Heico Aerospace CompanyBackup Ring DN69429A14, DN69429A1769429A14, 69429A17Pratt & Whitney PW118, PW118A, PW1202008-02-27current

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.