The U.S. aircraft register, updated daily
Parts

Check

No failure report names the check. 27 FAA approvals let 9 companies make a replacement check, Hrd Aerosystems INC holding the most (12).

Approved replacement parts 27 parts manufacturer approvals

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

For these models most: Boeing 767 (11), Aerospatiale ATR 72 (9), Boeing 757 (7), Boeing 747 (7), Boeing 737 (6), Boeing 727 (4), Boeing 707 (4), Boeing 777 (3), Airbus A350 (3), Gulfstream GIV-X G450 (2), Dassault FALCON 50 (2), Boeing 787 Dreamliner (2).

MakerPartReplacesFitsGrantedStatus
Hrd Aerosystems INCCheck H202381202381The Boeing Company 737-900ER Series2026-03-09current
Hrd Aerosystems INCCheck Assembly P802503802503The Boeing Company 737-900ER Series2026-03-09current
Hrd Aerosystems INCCheck Assembly P802503802503Gulfstream Aerospace... GIV-X2025-12-04current
Hrd Aerosystems INCCheck H202381202381Gulfstream Aerospace... GIV-X2025-12-04current
Honeywell International INC.Check - Valve 3203016-003203016-00Airbus SAS A350-9412023-03-31current
Ametek Ameron, LLC D/B/A Mass SystemsCheck M202381202381Boeing 737700 Series, 737-800 Series, 737-900 Series2021-02-12current
Ametek Ameron, LLC D/B/A Mass SystemsCheck M202381202381MHI RJ Aviation ULC CL-600-2B19 (Regional Jet Series 100...2021-02-12current
Hrd Aerosystems INCCheck Assembly P802503Walter Kidde 802503Aerospatiale ATR72-101, -201) Dassault Aviation...2016-03-13current
Circor Aerospace, INC.Check / Unloader Valve CV99-237CV99-237Boeing 767-400ER Series2015-05-03current
Circor Aerospace, INC.Check / Unloader Valve CV99-237CV99-237Boeing 747-400 Series, 747-400D Series,...2015-05-03current
Circor Aerospace, INC.Check/ Unloader Valve CV99-191CV99-191Boeing 767-200, 300, 747-4002015-05-03current
Circor Aerospace, INC.Check / Unloader Valves CV99-237CV99-237Boeing 747-100 Series, 747-200B Series,...2015-05-03current
Parker Hannifin CORPCheck - Valve 2100171-1012100171-101Airbus A350-9412015-01-06current
Parker Hannifin CORPCheck - Valve 2080009-1032080009-103Airbus A350-9412015-01-06current
Hrd Aerosystems INCCheck Assembly P802503Walter Kidde, 802503Aerospatiale ATR72-101, -201) Dassault Aviation...2014-05-27current
Hrd Aerosystems INCCheck Assembly P802503Walter Kidde 802503Aerospatiale ATR72-101, -201) Dassault Aviation...2013-11-21current
Kidde AerospaceCheck-T 446903-1446903-1BOEING 787-82011-08-30current
Ametek Ameron, LLC D/B/A Mass SystemsCheck M202381202381Embraer EMB-135, EMB-1452010-11-29current
Ametek Ameron, LLC D/B/A Mass SystemsCheck M202381202381Aerospatiale ATR72-101 ATR72-201) Gulfstream...2010-07-26current
Mass Systems INCCheck M202381202381Aerospatiale ATR72-101, ATR72-201) Gulfstream...2007-10-04current
Hrd Aerosystems INCCheck Assembly P802503Walter Kidde 802503Gulfstream GII59, GIV) British Aerospace...2006-05-24current
Hrd Aerosystems INCCheck H202381202381Aerospatiale ATR72-101, ATR72-201) Gulfstream...2006-04-10current
Hrd Aerosystems INCCheck Assembly P802503Walter Kidde 802503Aerospatiale ATR72-101, -201, 747-1002005-02-06current
Hrd Aerosystems INCCheck Assembly P802503Walter Kidde 802503Aerospatiale ATR72-101, -201, 707-300 Series2004-03-31current
Circle Seal Controls INCCheck / Unloader Valves CV99-237CV99-237Boeing 747-100 Series, 747-200B Series,...2000-08-20current
Hrd Aerosystems INCCheck Assembly P802503Walter Kidde 802503Aerospatiale ATR72-101, ATR72-201, 757-2002000-05-14current
Overland Aviation Services COCheck Assembly OA843045Walter Kidde 843045Boeing 707 Series, 720 Series, 727 Series1997-09-16current

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.