The U.S. aircraft register, updated daily
Parts

Down Lock

0 failure reports named the down lock in the last ten years, 1 since 1999. 184 FAA approvals let 9 companies make a replacement down lock, Aviation Materials Management INC holding the most (86).

Reports by year

0001111999
Reports by year, as a table
reports
19991

Approved replacement parts 184 parts manufacturer approvals

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

For these models most: Boeing 757 (176), Boeing 747 (3), Beechcraft B300 King Air 350 (2), Beechcraft B200 King Air B200 (2), Short Bros SD3 (1), Boeing 737 (1), Bell 230 (1).

MakerPartReplacesFitsGrantedStatus
Hemico INC.Down Lock Hook HEM101-810136-10101-810136-10Textron Aviation Inc. B200, B200C, B200CT2024-10-17current active
Hemico INC.Down Lock Hook HEM101-810136-9101-810136-9Textron Aviation Inc. B200, B200C, B200CT2024-10-17current active
Air Cargo CarriersDown Lock Bracket 200923002-ACC200923002, 200923305Viking Air Limited SD3-60, SD3-60 SHERPA2020-05-21current
Aviation Materials Management, INCDown Lock Assy 161N3001-11161N3001-11Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-164161N0001-164Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-72161N0001-72Boeing 757-200 SERIES, 757-200CB SERIES,...2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-60161N0001-60Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-403161N0001-403Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-61161N0001-61Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Link Assy-Lower, Main Landing Gear 161N3004-4161N3004-4Boeing 757-200 SERIES, 757-200CB SERIES,...2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-401161N3001-401Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-14161N3001-14Boeing 757-200 SERIES, 757-200CB SERIES,...2015-02-12current
Aviation Materials Management, INCDown Lock Link Assy 161N3002-4161N3002-4Boeing 757-200 SERIES, 757-200CB SERIES,...2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-24161N3001-24Boeing 757-300 SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-71161N0001-71Boeing 757-200 SERIES, 757-200CB SERIES,...2015-02-12current
Aviation Materials Management, INCDown Lock Link Assy 161N3002-3161N3002-3Boeing 757-200 SERIES, 757-200CB SERIES,...2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-59161N0001-59Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-16161N3001-16Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Link Assy-Lower, Main Landing Gear 161N3004-3161N3004-3Boeing 757-200 SERIES, 757-200CB SERIES,...2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-13161N3001-13Boeing 757-200 SERIES, 757-200CB SERIES,...2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-17161N3001-17Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-402161N3001-402Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-18161N3001-18Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-159161N0001-159Boeing 757-300 SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-160161N0001-160Boeing 757-300 SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-143161N0001-143Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-8161N3001-8Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-404161N0001-404Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-51161N0001-51Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-124161N0001-124Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-25161N3001-25Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-123161N0001-123Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-144161N0001-144Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-7161N3001-7Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-10161N3001-10Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-64161N0001-64Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-63161N0001-63Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-26161N3001-26Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-65161N0001-65Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-12161N3001-12Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-62161N0001-62Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-52161N0001-52Boeing 757-200 SERIES. .2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-66161N0001-66Boeing 757-200 SERIES.2015-02-12current
Aviation Materials Management, INCDOWN LOCK ASSY 161N0001-165161N0001-165Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-23161N3001-23Boeing 757-300 SERIES.2015-02-12current
Aviation Materials Management, INCDown Lock Assy 161N3001-15161N3001-15Boeing 757-200 SERIES, 757-200PF SERIES.2015-02-12current
Aviation Materials Management, INC.Down Lock Assy 161N3001-12161N3001-12Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Link Assy-Lower, Main Landing Gear 161N3004-4161N3004-4Boeing 757-200 SERIES, 757-200CB SERIES,...2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-124161N0001-124Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-7161N3001-7Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-25161N3001-25Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-59161N0001-59Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-24161N3001-24Boeing 757-300 SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-62161N0001-62Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-144161N0001-144Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-23161N3001-23Boeing 757-300 SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Link Assy 161N3002-3161N3002-3Boeing 757-200 SERIES, 757-200CB SERIES,...2014-09-04current
Aviation Materials Management, INC.Down Lock Link Assy 161N3002-4161N3002-4Boeing 757-200 SERIES, 757-200CB SERIES,...2014-09-04current
Aviation Materials Management, INC.Down Lock Link Assy-Lower, Main Landing Gear 161N3004-3161N3004-3Boeing 757-200 SERIES, 757-200CB SERIES,...2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-52161N0001-52Boeing 757-200 SERIES. .2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-164161N0001-164Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-72161N0001-72Boeing 757-200 SERIES, 757-200CB SERIES,...2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-16161N3001-16Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-8161N3001-8Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-63161N0001-63Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-51161N0001-51Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-65161N0001-65Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-402161N3001-402Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-404161N0001-404Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-18161N3001-18Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-165161N0001-165Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-66161N0001-66Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-60161N0001-60Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-13161N3001-13Boeing 757-200 SERIES, 757-200CB SERIES,...2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-403161N0001-403Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-159161N0001-159Boeing 757-300 SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-123161N0001-123Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-10161N3001-10Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-71161N0001-71Boeing 757-200 SERIES, 757-200CB SERIES,...2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-26161N3001-26Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-160161N0001-160Boeing 757-300 SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-15161N3001-15Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-61161N0001-61Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-401161N3001-401Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-64161N0001-64Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-14161N3001-14Boeing 757-200 SERIES, 757-200CB SERIES,...2014-09-04current
Aviation Materials Management, INC.DOWN LOCK ASSY 161N0001-143161N0001-143Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-17161N3001-17Boeing 757-200 SERIES, 757-200PF SERIES.2014-09-04current
Aviation Materials Management, INC.Down Lock Assy 161N3001-11161N3001-11Boeing 757-200 SERIES.2014-09-04current
Aviation Materials Management INCDown Lock Assy 161N3001-15161N3001-15Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-404161N0001-404Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-62161N0001-62Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Link Assy 161N3002-3161N3002-3Boeing 757-200 SERIES, 757-200CB SERIES,...2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-26161N3001-26Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-11161N3001-11Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-61161N0001-61Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-143161N0001-143Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-52161N0001-52Boeing 757-200 SERIES. .2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-51161N0001-51Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-71161N0001-71Boeing 757-200 SERIES, 757-200CB SERIES,...2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-165161N0001-165Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-10161N3001-10Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-123161N0001-123Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-65161N0001-65Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-401161N3001-401Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Link Assy-Lower, Main Landing Gear 161N3004-4161N3004-4Boeing 757-200 SERIES, 757-200CB SERIES,...2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-144161N0001-144Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-160161N0001-160Boeing 757-300 SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-403161N0001-403Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-17161N3001-17Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-59161N0001-59Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-14161N3001-14Boeing 757-200 SERIES, 757-200CB SERIES,...2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-63161N0001-63Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-159161N0001-159Boeing 757-300 SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-402161N3001-402Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-164161N0001-164Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-25161N3001-25Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-12161N3001-12Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-18161N3001-18Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-24161N3001-24Boeing 757-300 SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Link Assy-Lower, Main Landing Gear 161N3004-3161N3004-3Boeing 757-200 SERIES, 757-200CB SERIES,...2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-72161N0001-72Boeing 757-200 SERIES, 757-200CB SERIES,...2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-66161N0001-66Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-64161N0001-64Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-7161N3001-7Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-13161N3001-13Boeing 757-200 SERIES, 757-200CB SERIES,...2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-8161N3001-8Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-60161N0001-60Boeing 757-200 SERIES.2013-03-24current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-124161N0001-124Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Link Assy 161N3002-4161N3002-4Boeing 757-200 SERIES, 757-200CB SERIES,...2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-23161N3001-23Boeing 757-300 SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-16161N3001-16Boeing 757-200 SERIES, 757-200PF SERIES.2013-03-24current
Aviation Materials Management INCDown Lock Assy 161N3001-11161N3001-11Boeing 757-200 SERIES.2010-10-18current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-52161N0001-52Boeing 757-200 SERIES. .2010-10-18current
Aviation Materials Management INCDown Lock Assy 161N3001-23161N3001-23Boeing 757-300 SERIES.2010-10-18current
Aviation Materials Management INCDown Lock Assy 161N3001-8161N3001-8Boeing 757-200 SERIES.2010-10-18current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-64161N0001-64Boeing 757-200 SERIES.2010-10-18current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-65161N0001-65Boeing 757-200 SERIES.2010-10-18current
Aviation Materials Management INCDown Lock Assy 161N3001-12161N3001-12Boeing 757-200 SERIES.2010-10-18current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-404161N0001-404Boeing 757-200 SERIES, 757-200PF SERIES.2010-10-18current
Aviation Materials Management INCDown Lock Assy 161N3001-16161N3001-16Boeing 757-200 SERIES, 757-200PF SERIES.2010-10-18current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-159161N0001-159Boeing 757-300 SERIES.2010-10-18current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-61161N0001-61Boeing 757-200 SERIES.2010-10-18current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-72161N0001-72Boeing 757-200 SERIES, 757-200CB SERIES,...2010-10-18current
Aviation Materials Management INCDown Lock Assy 161N3001-15161N3001-15Boeing 757-200 SERIES, 757-200PF SERIES.2010-10-18current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-165161N0001-165Boeing 757-200 SERIES, 757-200PF SERIES.2010-10-18current
Aviation Materials Management INCDOWN LOCK ASSY 161N0001-164161N0001-164Boeing 757-200 SERIES, 757-200PF SERIES.2010-10-18current
Aviation Materials Management INCDown Lock Assy 161N3001-18161N3001-18Boeing 757-200 SERIES, 757-200PF SERIES.2010-10-18current
Aviation Materials Management INCDown Lock Assy 161N3001-14161N3001-14Boeing 757-200 SERIES, 757-200CB SERIES,...2010-10-18current
Aviation Materials Management INCDown Lock Link Assy 161N3002-4161N3002-4Boeing 757-200 SERIES, 757-200CB SERIES,...2010-10-18current

The first 150 of 184.

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.