Sigma Advanced Systems has started aerospace production at its Sri City facility in Andhra Pradesh, bringing the first 75,000 sq ft of a planned 500,000 sq ft manufacturing campus into operation eight months after ground-breaking.
The operational area currently provides around 100,000 machining hours of annual capacity, with Sigma planning to increase the first facility towards nearly 300,000 hours as equipment and processes are added. The remaining campus is expected to become operational over the next 12 months.
The first batch of precision-machined aerospace components has already been manufactured and shipped to Sigma’s UK operation for final verification before formal customer delivery. The Sri City facility has also completed the initial stages of a source-change approval process with Rolls-Royce Aerospace.
That customer-approval step is central to the industrial significance of the development. Transferring aerospace work from one manufacturing location to another involves considerably more than installing comparable machine tools, because the new route must reproduce the approved process, inspection regime, documentation, material traceability, and dimensional capability required for the component.
Sigma is developing Sri City to replicate manufacturing capabilities already established through its UK aerospace businesses, including Nasmyth and Bromford. Once planned processes are fully operational, the company expects around 70% of the relevant manufacturing process to be undertaken in India while retaining complementary capability in Britain.
The announcement therefore represents an operational milestone in a manufacturing strategy that Industrial News has already followed through Sigma’s contract activity. A £125 million Rolls-Royce agreement announced in August extended the group’s engine-component workload across UK and Indian facilities under a dual-source production model.
The latest development is different from another contract award. The work has already been secured; Sri City now has to demonstrate that components can be manufactured, verified, approved, and delivered from the new source without introducing variability into tightly controlled aerospace programmes.
Sigma plans to add further aerospace-critical processes as the campus develops and has said it will progress NADCAP accreditation. That matters because special processes such as welding, heat treatment, coatings, chemical treatment, and non-destructive testing cannot always be judged through final dimensional inspection alone. Their process controls form part of the qualified manufacturing route.
The company expects Sri City eventually to support precision machining, complex fabrication, specialised welding, engineering, and other aerospace operations. More than 500 employees are planned over the next two to three years, accompanied by on-campus training and capability-development programmes intended to build the specialist workforce needed around those processes.
Increasing machining capacity from 100,000 to nearly 300,000 annual hours will require that workforce to grow with the equipment. Machine utilisation depends on programmers, setters, operators, tooling, metrology, inspection, maintenance, material supply, and production planning, while aerospace traceability adds documentation requirements that become harder rather than easier as volumes increase.
Location also forms part of the company’s export model. Sri City provides access to four major ports and established industrial infrastructure, although logistics alone do not make a viable aerospace site. Reliable utilities, qualified suppliers, technical labour, customs processes, quality systems, and customer access are equally important once production begins.
The planned dual-source structure offers potential resilience if the UK and Indian facilities can both remain qualified for selected work. A customer may then have more flexibility to respond to demand peaks or disruption without beginning a source-transfer exercise after the problem has already occurred.
That resilience is only real where manufacturing routes remain genuinely interchangeable. Aerospace parts can be tied to specific tooling, process approvals, material sources, inspection methods, and special-process suppliers, meaning production cannot necessarily be moved between sites simply because an idle machine exists elsewhere.
Sigma’s decision to send the first Sri City output to Britain for verification illustrates that caution. Production has started, but the initial components are still passing through the process needed to demonstrate that the Indian operation can reproduce the required result.
The wider 500,000 sq ft campus also gives Sigma room for further expansion and potential acquired operations. Floor area, however, is not the limiting factor in aerospace manufacture once a building exists. Qualified people, processes, equipment, and customer approvals determine how much of that space can generate useful production.
Sri City has now crossed from a construction project into an operating factory. Its next meaningful milestones will be completion of customer source-change approvals, additional process qualification, progress towards NADCAP accreditation, and sustained serial deliveries from India. Those measures will show whether Sigma has genuinely replicated its UK manufacturing capability rather than simply installed more machining capacity on a larger site.
