Nimrod IPT Judge and Jury?
The IPT hold sway, in a longer term engineering sense, over the project. They control the extent of any engineering investigations (& hold the purse strings..). The IPT ‘contracts’ BAE SYSTEMS to investigate issues on MR2. The IPT issue the ‘engineering solution’ to issues on MR2 be it a modification or otherwise. The IPT issue Technical Instructions, Routine/Urgent/Special/Servicing (RTI/UTI/STI/SI). The IPT issue ‘service modifications’ (SM’s) as in the fitting of flight deck Armour to MR2. Within the ‘service’ the IPT is THE engineering authority. Notwithstanding ... The 'end user' (squadron/unit level) has a degree of authority, in a day to day sense, to enable them to carry out taskings (ENGO/SENGO & up etc..).