As ex mil i've seen both sides , RAF engs on C130's & Harriers could c/o EGR's upto & including t/o pwr . As someone has previously stated the harriers were 'tied ' down for nozzle rotations at high power settings, although a few of the GE's logged some solo time on 4 Sqdn when i was a member in the mid 80's !. The civvy GE's are allowed to ground run & taxi most of the types on which they are'fully'qualified(Usually 'heavies' are only taxied by flt crew), in fact the only person in my present employ to put one on the grass (twice in the same spot !!! )was a captain (sorry Andy !!
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