Parts · Airframe structure

Coaming

76 failure reports named the coaming in the last ten years, 77 since 1999, most often on the Bombardier CL-600 Challenger and CRJ; the condition most often found was "chafed".

Reports by year

Reports by year, as a table

	reports
1999	1
2018	2
2019	6
2020	12
2021	15
2022	9
2023	6
2024	12
2025	7
2026	7

Which system the reports file it under last ten years

Airframe structure39Engine37

Reports by system, as a table

	reports
Airframe structure	39
Engine	37

Models most often reporting it last ten years

Bombardier CL-600 Challenger and CRJ73Boeing 7671Dehavilland DHC-81Saab-Fairchild 3401

Models most reported, as a table

	reports
Bombardier CL-600 Challenger and CRJ	73
Boeing 767	1
Dehavilland DHC-8	1
Saab-Fairchild 340	1

How it failed the condition found, last ten years

chafed39worn13cracked11gouged5corroded3damaged2deformed1dented1loose1

Conditions found, as a table

	reports
chafed	39
worn	13
cracked	11
gouged	5
corroded	3
damaged	2
deformed	1
dented	1
loose	1

Engines most often reporting it

General Electric CF34-8C5 3General Electric CF34-8C5B1 3General Electric CT7-9B 1

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.