Parts · Airframe structure

Rub Block

7 failure reports named the rub block in the last ten years, 11 since 1995, most often on the Cessna 680 Citation Sovereign and Latitude; the condition most often found was "binding". 18 FAA approvals let 8 companies make a replacement rub block, Spirit Aerosystems INC holding the most (7).

Reports by year

Reports by year, as a table

	reports
1995	1
1997	1
1999	2
2024	1
2025	4
2026	2

Which system the reports file it under last ten years

Airframe structure5Cabin, seats and restraints1Flight controls1

Reports by system, as a table

	reports
Airframe structure	5
Cabin, seats and restraints	1
Flight controls	1

Models most often reporting it last ten years

Cessna 680 Citation Sovereign and Latitude3Boeing 7371Boeing 7571Bombardier CL-600 Challenger and CRJ1

Models most reported, as a table

	reports
Cessna 680 Citation Sovereign and Latitude	3
Boeing 737	1
Boeing 757	1
Bombardier CL-600 Challenger and CRJ	1

How it failed the condition found, last ten years

binding1broken1cracked1loose1out of adjust1out of limits1worn1

Conditions found, as a table

	reports
binding	1
broken	1
cracked	1
loose	1
out of adjust	1
out of limits	1
worn	1

Engines most often reporting it

Rolls-Royce RB211-535E4 1

Approved replacement parts 18 parts manufacturer approvals

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

Spirit Aerosystems INC 7Goodrich Landing Gear 2Gemini Engineering INC 2Aviation Materials Management INC 2Airborne Maintenance & Engineering Services 2Madeira Air Supply INC 1Aviation Materials Management, INC. 1Aviation Materials Management, INC 1

For these models most: Boeing 737 (8), Boeing 777 (6), Boeing 767 (2), Boeing 747 (2).

Maker	Part	Replaces	Fits	Granted	Status
Airborne Maintenance & Engineering Services	Rub Block 007-04522-45	007-04522-45	Boeing 737-700	2022-04-25	current
Airborne Maintenance & Engineering Services	Rub Block 007-04522-43	007-04522-43	Boeing 737-700	2022-04-25	current
Aviation Materials Management, INC	Rub Block 113A2704-1	113A2704-1	Boeing 737-600 Series, 737-700 Series,...	2015-02-12	current
Aviation Materials Management, INC.	Rub Block 113A2704-1	113A2704-1	Boeing 737-600 Series, 737-700 Series,...	2014-09-04	current
Spirit Aerosystems INC	RUB BLOCK 315W1940-2	315W1940-2	Boeing 777-200 SERIES, 777-200LR SERIES,...	2013-07-22	current
Spirit Aerosystems INC	RUB BLOCK 315W1940-1	315W1940-1	Boeing 777-200 SERIES, 777-200LR SERIES,...	2013-07-22	current
Aviation Materials Management INC	Rub Block 113A2704-1	113A2704-1	Boeing 737-600 Series, 737-700 Series,...	2013-03-24	current
Spirit Aerosystems INC	RUB BLOCK 113A2704-1	113A2704-1	Boeing 737-600 SERIES, 737-700 SERIES,...	2010-09-13	current
Aviation Materials Management INC	Rub Block 113A2704-1	113A2704-1	Boeing 737-600 Series, 737-700 Series,...	2010-08-08	current
Gemini Engineering INC	RUB BLOCK 113T1366-3	113T1366-3	Boeing 767-200 Series, 767-300 Series,...	2009-11-15	current
Gemini Engineering INC	RUB BLOCK 113A2704-1	113A2704-1	Boeing 737-600 Series, 737-700 Series,...	2009-11-15	current
Goodrich Landing Gear	RUB BLOCK 69B14772-1	69B14772-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-10-29	current
Goodrich Landing Gear	RUB BLOCK 69B14772-1	69B14772-1	Boeing 747-100 SERIES, 747-100B SERIES,...	2009-10-29	current
Spirit Aerosystems INC	RUB BLOCK 315W1940-2	315W1940-2	Boeing 777-200 SERIES, 777-200LR SERIES,...	2007-03-16	current
Spirit Aerosystems INC	RUB BLOCK 315W1940-1	315W1940-1	Boeing 777-200 SERIES, 777-200LR SERIES,...	2007-03-16	current
Spirit Aerosystems INC	RUB BLOCK 315W1940-2	315W1940-2	Boeing 777-200 SERIES, 777-200LR SERIES,...	2006-10-10	current
Spirit Aerosystems INC	RUB BLOCK 315W1940-1	315W1940-1	Boeing 777-200 SERIES, 777-200LR SERIES,...	2006-10-10	current
Madeira Air Supply INC	Rub Block-Deflection Control Outbd. T.E. Flap Supp. M27E1002-1, M27E1002-2	Boeing A/C Co. P/N 113T1366-3, P/N 113T1366-4	Boeing 767 series	1988-10-29	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.