A rugged computer that is fit-for-purpose on day one but unserviceable five years into a 20-year programme is a programme risk. Long-term support (LTS) and obsolescence management are not afterthoughts — they are fundamental procurement criteria that should be evaluated with the same rigour as environmental qualification and performance specifications. This guide helps programme managers and procurement officers ask the right questions.
Why Obsolescence is Inevitable
The commercial semiconductor and electronics industry operates on product cycles of 2–5 years. Processors, memory, storage devices, power management ICs and connectors are regularly discontinued as manufacturers move to newer process nodes. Defence programmes, by contrast, run for 10–30 years — and may need to procure spares or replacement units throughout. Without active obsolescence management, a programme will eventually face a situation where a critical component is no longer available and the platform cannot be manufactured or repaired.
What to Ask About Component Lifecycle
- ›What is the expected production lifecycle of the specific platform variant I am procuring? (Not the product family — the specific SKU.)
- ›Which components in the design are on a manufacturer’s end-of-life (EOL) watch list?
- ›Do you have a proactive obsolescence monitoring process? How frequently is the BoM reviewed against component lifecycle databases?
- ›When a component is discontinued, what is your standard process: last-time buy, redesign, or alternative component qualification?
- ›What is the lead time for last-time buy decisions and how far in advance do you notify customers?
Configuration Management
Configuration management is the process of identifying, documenting and controlling changes to the hardware design throughout the product lifecycle. For defence procurement, this means: every unit delivered should be identifiable to a specific hardware configuration baseline; any change to the design (even a component substitute) should be documented, assessed for qualification impact and notified to the customer. Ask your supplier for a Configuration Management Plan or equivalent document before contract award.
Long-Term Support Agreements
- ›What repair and return-to-service (RTS) capability do you maintain? For how many years?
- ›Is spare parts stocking included in your LTS offer, or do I need to negotiate a separate provisioning contract?
- ›Can you support the platform beyond its standard production lifecycle? At what cost premium?
- ›Do you maintain manufacturing capability (PCB assembly, mechanical machining) in-house, reducing dependency on sub-tier suppliers for repair?
- ›What is your documented repair turnaround time? Is an express repair service available for operational urgency?
Evaluating a Supplier’s LTS Commitment
Promises of long-term support are meaningless without commercial and operational substance. When evaluating suppliers, look for: a formal LTS policy document with defined support periods and conditions; evidence of in-house manufacturing capability (not sole reliance on sub-contractors); examples of how they have managed obsolescence for existing customers; willingness to enter into a contractual LTS agreement with defined support levels and notice periods for discontinuation. A supplier unwilling to commit these elements in writing at contract stage is unlikely to prioritise your programme’s support needs in 10 years.
