Parts · Airframe structure

Scroll

1 failure reports named the scroll in the last ten years, 52 since 1995, most often on the Bombardier CL-600 Challenger and CRJ; the condition most often found was "corroded". 3 FAA approvals let 2 companies make a replacement scroll, Aerometals holding the most (2). The reports call it "scroll", "scroll assy".

Reports by year

Reports by year, as a table

	reports
1995	1
1996	4
1997	2
1998	6
1999	7
2000	5
2001	1
2002	1
2003	3
2004	2
2006	4
2007	1
2008	5
2010	1
2011	4
2012	2
2013	1
2014	1
2025	1

Which system the reports file it under last ten years

Airframe structure1

Reports by system, as a table

	reports
Airframe structure	1

Models most often reporting it last ten years

Bombardier CL-600 Challenger and CRJ1

Models most reported, as a table

	reports
Bombardier CL-600 Challenger and CRJ	1

How it failed the condition found, last ten years

corroded1

Conditions found, as a table

	reports
corroded	1

Approved replacement parts 3 parts manufacturer approvals

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

Aerometals 2Zee Company INC 1

For these models most: Md Helicopters Inc 369 (2), Md Helicopters Inc 500 (1), Fairchild SA226 (1).

Maker	Part	Replaces	Fits	Granted	Status
Aerometals	Scroll Assembly, Blower 369X25612	MDHC (Hughes) Modification Part	MD Helicopters, Inc. MDHI) (369D, 369E, 369FF	1998-11-16	current
Aerometals	Scroll Assembly, Blower All parts listed on Master...	MDHC (Hughes) Modification Part	MD Helicopters, Inc. MDHI) (369A 369HM S/N 0030M-0100M,...	1998-11-16	current
Zee Company INC	Scroll Assembly TD912-9		Fairchild Aircraft SA226-AT, -TC and -T	1996-11-28	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.