Parts · Engine

Signal Cond

28 failure reports named the signal cond in the last ten years, 200 since 1995, most often on the Boeing 767; the condition most often found was "failed". 3 FAA approvals let 1 company make a replacement signal cond, Rogerson Kratos holding the most (3). The reports call it "signal cond unit", "signal cond", "signal cond.".

Reports by year

Reports by year, as a table

	reports
1995	6
1997	7
1998	15
1999	12
2000	12
2001	17
2002	23
2003	19
2004	4
2005	1
2006	1
2007	6
2008	7
2009	6
2010	6
2011	9
2012	7
2013	8
2014	2
2015	4
2016	2
2017	2
2018	5
2019	5
2020	1
2021	3
2022	1
2024	3
2025	3
2026	3

Which system the reports file it under last ten years

Engine13Fuel system10Propeller2Heating, ice protection and utility systems2Instruments and avionics1

Reports by system, as a table

	reports
Engine	13
Fuel system	10
Propeller	2
Heating, ice protection and utility systems	2
Instruments and avionics	1

Models most often reporting it last ten years

Boeing 7675Boeing 7573Boeing 7772Bombardier CL-600 Challenger and CRJ2Cessna 525 CitationJet (CJ series)2Embraer EMB-145 ERJ 1452Boeing 7371Boeing 7471Cessna 4021Cessna 750 Citation X1Dehavilland DHC-81Embraer EMB-1201

Models most reported, as a table

	reports
Boeing 767	5
Boeing 757	3
Boeing 777	2
Bombardier CL-600 Challenger and CRJ	2
Cessna 525 CitationJet (CJ series)	2
Embraer EMB-145 ERJ 145	2
Boeing 737	1
Boeing 747	1
Cessna 402	1
Cessna 750 Citation X	1
Dehavilland DHC-8	1
Embraer EMB-120	1

How it failed the condition found, last ten years

failed10faulted4faulty4defective2inaccurate2inoperative2abnormal1intermittent1malfunctioned1unknown1

Conditions found, as a table

	reports
failed	10
faulted	4
faulty	4
defective	2
inaccurate	2
inoperative	2
abnormal	1
intermittent	1
malfunctioned	1
unknown	1

Engines most often reporting it

Rolls-Royce RB-211 series 2Continental TSIO-520-EB 1General Electric CF34-3B1 1General Electric CF6-80C2B5F 1Pratt & Whitney Canada PW118A 1Pratt & Whitney Canada PW123 1Pratt & Whitney PW2040 1Pratt & Whitney PW4060 1

Approved replacement parts 3 parts manufacturer approvals

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

Rogerson Kratos 3

For these models most: Bell 412 (1), Bell 222 (1).

Maker	Part	Replaces	Fits	Granted	Status
Rogerson Kratos	Signal Cond. Mast Torque 50968	Bell Helicopter 406-375-212-101	Bell 406CS	1996-03-25	current
Rogerson Kratos	Signal Cond. Mast Torque 50691-7, -9	Bell Helicopter 222-375-062-107, -109	Bell 222	1996-03-10	current
Rogerson Kratos	Signal Cond. Mast Torque 50971-1	Bell Helicopter 412-375-003-103	Bell 412	1996-03-10	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.