Parts · Airframe structure

Bulkhead Web

1,422 failure reports named the bulkhead web in the last ten years, 2,229 since 1995, most often on the Boeing 737; the condition most often found was "cracked". 10 FAA approvals let 1 company make a replacement bulkhead web, Aero Accessories INC holding the most (10). The reports call it "bulkhead web", "bulkhead web".

Reports by year

Reports by year, as a table

	reports
1995	7
1996	77
1997	102
1998	88
1999	77
2008	1
2009	16
2010	10
2011	37
2012	56
2013	66
2014	127
2015	143
2016	139
2017	217
2018	191
2019	248
2020	216
2021	149
2022	52
2023	23
2024	69
2025	63
2026	55

Which system the reports file it under last ten years

Airframe structure1,412Engine8Cabin, seats and restraints1Emergency equipment1

Reports by system, as a table

	reports
Airframe structure	1,412
Engine	8
Cabin, seats and restraints	1
Emergency equipment	1

Models most often reporting it last ten years

Boeing 737741Bombardier CL-600 Challenger and CRJ397Lockheed 382168Boeing 74717Boeing 76712Mcdonnell Douglas MD-1112Airbus A30010Boeing 75710Mcdonnell Douglas MD-109Boeing 7176Boeing 7775Mcdonnell Douglas Aircraft Co MD-884

Models most reported, as a table

	reports
Boeing 737	741
Bombardier CL-600 Challenger and CRJ	397
Lockheed 382	168
Boeing 747	17
Boeing 767	12
Mcdonnell Douglas MD-11	12
Airbus A300	10
Boeing 757	10
Mcdonnell Douglas MD-10	9
Boeing 717	6
Boeing 777	5
Mcdonnell Douglas Aircraft Co MD-88	4

How it failed the condition found, last ten years

cracked988corroded255damaged66chafed28gouged20canning15dented11debonded5deteriorated4buckled3

Conditions found, as a table

	reports
cracked	988
corroded	255
damaged	66
chafed	28
gouged	20
canning	15
dented	11
debonded	5
deteriorated	4
buckled	3

Engines most often reporting it

Pratt & Whitney PW4158 2Turbomeca (Safran) ARRIEL 2B1 2Pratt & Whitney Canada PW206B2 1Pratt & Whitney PW4060 1Rolls-Royce RB211-535E4 1

Approved replacement parts 10 parts manufacturer approvals

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

Aero Accessories INC 10

For these models most: Grumman G-21 (10).

Maker	Part	Replaces	Fits	Granted	Status
Aero Accessories INC	Bulkhead Web Plate Angle, Wing Gas Tank Compartment Box Beam 12307-7	Grumman Aircraft Engineering Corp Bulkhead 12307-7	Grumman JRF-1, JRF-2, JRF-3	2002-07-11	current
Aero Accessories INC	Bulkhead Web Plate Angle, Wing Gas Tank Compartment Box Beam 12308-7	Grumman Aircraft Engineering Corp Bulkhead 12307-7	Grumman JRF-1, JRF-2, JRF-3	2002-07-11	current
Aero Accessories INC	Bulkhead Web Plate Angle, Wing Gas Tank Compartment Box Beam 12308-9	Grumman Aircraft Engineering Corp Bulkhead 12307-9	Grumman JRF-1, JRF-2, JRF-3	2002-07-11	current
Aero Accessories INC	Bulkhead Web Plate, Wing Gas Tank Compartment Box Beam 12308-5	Grumman Aircraft Engineering Corp Bulkhead 12307-5	Grumman JRF-1, JRF-2, JRF-3	2002-07-11	current
Aero Accessories INC	Bulkhead Web Plate Angle, Wing Gas Tank Compartment Box Beam 12308-8	Grumman Aircraft Engineering Corp Bulkhead 12307-8	Grumman JRF-1, JRF-2, JRF-3	2002-07-11	current
Aero Accessories INC	Bulkhead Web Plate, Wing Gas Tank Compartment Box Beam 12307-5	Grumman Aircraft Engineering Corp Bulkhead 12307-5	Grumman JRF-1, JRF-2, JRF-3	2002-07-11	current
Aero Accessories INC	Bulkhead Web Plate Angle, Wing Gas Tank Compartment Box Beam 12307-8	Grumman Aircraft Engineering Corp Bulkhead 12307-8	Grumman JRF-1, JRF-2, JRF-3	2002-07-11	current
Aero Accessories INC	Bulkhead Web Plate Angle, Wing Gas Tank Compartment Box Beam 12308-6	Grumman Aircraft Engineering Corp Bulkhead 12307-6	Grumman JRF-1, JRF-2, JRF-3	2002-07-11	current
Aero Accessories INC	Bulkhead Web Plate Angle, Wing Gas Tank Compartment Box Beam 12307-9	Grumman Aircraft Engineering Corp Bulkhead 12307-9	Grumman JRF-1, JRF-2, JRF-3	2002-07-11	current
Aero Accessories INC	Bulkhead Web Plate Angle, Wing Gas Tank Compartment Box Beam 12307-6	Grumman Aircraft Engineering Corp Bulkhead 12307-6	Grumman JRF-1, JRF-2, JRF-3	2002-07-11	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.