With the Royal Air Force's Sentinel R1 aircraft now planned to be in service for at least another four years, industry is in talks with the UK Ministry of Defence on long-overdue upgrades.
One of those upgrades will be a thorough refresh of the intelligence, surveillance and reconnaissance (ISR) aircraft's mission systems, including hardware and software, which are facing several obsolescence issues.
The MoD's decision to incrementally extend the life of the five-strong fleet of Sentinels – which were due to be scrapped after their involvement in the Afghanistan campaign – means that the RAF has struggled to plan for