Parts · Engine

Lock Tab

4 failure reports named the lock tab in the last ten years, 18 since 1996, most often on the Bombardier CL-600 Challenger and CRJ; the condition most often found was "broken". 24 FAA approvals let 10 companies make a replacement lock tab, Goodrich Landing Gear holding the most (10).

Reports by year

Reports by year, as a table

	reports
1996	2
1998	1
2004	1
2005	2
2007	1
2008	1
2009	1
2010	1
2013	1
2014	1
2015	2
2021	1
2023	1
2026	2

Which system the reports file it under last ten years

Engine3Flight controls1

Reports by system, as a table

	reports
Engine	3
Flight controls	1

Models most often reporting it last ten years

Bombardier CL-600 Challenger and CRJ1Cessna 172 Skyhawk1Cirrus SR221Sikorsky S-641

Models most reported, as a table

	reports
Bombardier CL-600 Challenger and CRJ	1
Cessna 172 Skyhawk	1
Cirrus SR22	1
Sikorsky S-64	1

How it failed the condition found, last ten years

broken2loose1misinstalled1

Conditions found, as a table

	reports
broken	2
loose	1
misinstalled	1

Engines most often reporting it

Continental IO-550-N 1Lycoming O-320-D2J 1Pratt & Whitney JT12A series 1

Approved replacement parts 24 parts manufacturer approvals

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

Goodrich Landing Gear 10Aviation Materials Management INC 6Ram Aircraft Limited Partnership 1Kelly Aerospace Power Systems, INC. 1Jet Parts Engineering INC 1Gemini Engineering 1Consolidated Fuel Systems INC 1Aviatron INC 1Aviation Materials Management, INC. 1Aviation Materials Management, INC 1

For these models most: Boeing 747 (12), Boeing 737 (4), Boeing 767 (3).

Maker	Part	Replaces	Fits	Granted	Status
Aviatron INC	Lock Tab, Retaining AVUS3504766-1	3504766-1	General Electric Company	2021-05-26	current
Aviation Materials Management, INC	Lock Tab 66-24441-1	66-24441-1	Boeing 737-100 Series, 737-200 Series,...	2015-02-12	current
Aviation Materials Management, INC.	Lock Tab 66-24441-1	66-24441-1	Boeing 737-100 Series, 737-200 Series,...	2014-09-04	current
Aviation Materials Management INC	LOCK TAB 161T1198-1	161T1198-1	Boeing 767-200 SERIES, 767-300 SERIES,...	2013-03-25	current
Aviation Materials Management INC	LOCK-TAB 69B13303-1	69B13303-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2013-03-25	current
Aviation Materials Management INC	LOCK TAB 69B00308-1	69B00308-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2013-03-25	current
Aviation Materials Management INC	LOCK-TAB 69B04134-1	69B04134-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2013-03-25	current
Aviation Materials Management INC	Lock Tab 66-24441-1	66-24441-1	Boeing 737-100 Series, 737-200 Series,...	2013-02-27	current
Jet Parts Engineering INC	Lock Tab - Retainer 3504766JP-1	3504766-1	General Electric CF34-8C1 CF34-8C5 CF34-8C5A1,...	2011-01-19	current
Gemini Engineering	LOCK TAB 69B00308-1	69B00308-1	Boeing 747-100 Series, 747-100B Series,...	2009-06-03	current
Goodrich Landing Gear	LOCK-TAB 69B04130-1	69B04130-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-04-09	current
Goodrich Landing Gear	LOCK TAB 69B04035-1	69B04035-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-04-09	current
Goodrich Landing Gear	LOCK TAB 69B14945-1	69B14945-1	Boeing 747-100B SERIES, 747-100B SUD...	2009-04-09	current
Goodrich Landing Gear	LOCK TAB 69B00308-1	69B00308-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-04-09	current
Goodrich Landing Gear	LOCK TAB 161T7171-1	161T7171-1	Boeing 767-400ER SERIES	2009-04-09	current
Goodrich Landing Gear	LOCK-TAB 69B04130-1	69B04130-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-04-09	current
Goodrich Landing Gear	LOCK TAB 161T7171-1	161T7171-1	Boeing 767-400ER SERIES	2009-04-09	current
Goodrich Landing Gear	LOCK TAB 69B00308-1	69B00308-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-04-09	current
Goodrich Landing Gear	LOCK TAB 69B04035-1	69B04035-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-04-09	current
Goodrich Landing Gear	LOCK TAB 69B14945-1	69B14945-1	Boeing 747-100B SERIES, 747-100B SUD...	2009-04-09	current
Kelly Aerospace Power Systems, INC.	Lock Tab SC78-A122	Precision Airmotive Facet/Marvel-Schebler...	Lycoming O-320 D1D O-360 A1G6, DF1A6, G1A6	2009-04-06	current
Aviation Materials Management INC	Lock Tab 66-24441-1	66-24441-1	Boeing 737-100 Series, 737-200 Series,...	2006-08-24	current
Consolidated Fuel Systems INC	Lock Tab SC78-A122	Precision Airmotive Facet/Marvel-Schebler...	Textron Lycoming Replacement part for Precision...	1996-05-05	current
Ram Aircraft Limited Partnership	Lock Tab 1289-1 Dwg. No. 1289 dated...	Cessna Part Number: 0851559-1	Cessna Series 200, 300, and 400 aircraft	1988-04-05	current

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.