The phrase "ageing components" is correct and usable in written English.
It can be used when discussing parts or elements that are becoming older or less effective over time, often in technical or engineering contexts.
Example: "The maintenance team is currently assessing the ageing components of the machinery to determine if replacements are necessary."
Alternatives: "worn-out parts" or "deteriorating elements".
"Liverpool have continuing problems on the field where Bob Paisley, having built the most successful British club side since the war, is presiding over its sharp decline because he cannot adequately replace ageing components," wrote Patrick Barclay in the Guardian.
The then defence secretary, Des Browne, apologised to the victims' families in December 2007, when an RAF board of inquiry concluded that ageing components and a lack of modern fire suppressants were among the contributory factors that led the 37-year-old Nimrod MR2 to crash.
So, instead of each computer being stuck with ageing components, suddenly all the computers have access to this powerful central store that does all the "heavy lifting", allowing the computers to run like new.
A previous RAF inquiry found that an escape of fuel caused by an overflow or leakage was the most probable cause of the explosion, and that the 37-year-old plane's ageing components and lack of modern fire suppressants were contributing factors.
The United States' stockpile surveillance program examines any changes, however minute, that may occur in aging components.
The cracked part and other aging components were replaced, and the rebuilt turntable was welded back together, Mr. Smith said.
Since the beginning of 2000, eight plants have shut down unexpectedly because of problems with aging components, according to his review of Nuclear Regulatory Commission documents.
The FTIR characterization results indicate that the carboxylic acids and ketones are the main aging components in the asphalt when exposed to air and oxygen.
"This amount is the minimum needed to avoid further deterioration of service, to replace all aging components, begin addressing leaking Red Line tunnels, and restore the system to frequent and reliable service," MetroNow said.
By the end of the decade, however, this level of energy production had decreased, in part as a result of a reduced level of hydroelectric generation caused by drought but also because there continued to be a lack of replacements for aging components.
Amtrak's "high-speed" Acela between Washington, D.C., and Boston can get up to full speed of 150 mph only for a short stretch in Rhode Island and Massachusetts, because it is plagued by curves in tracks laid over a century ago and aging components, such as some electric overhead wiring dating to the early 1900s.
