Originally Posted by
LOMCEVAK
GR1 2250l tank trials had started at Boscombe by October 1987 so this was not associated with Op Granby. This clearance was only to 0.92M as per the 1500l tanks as a supersonic clearance was not required.
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I don't think they appeared in the squadrons until Granby. Some swapping went on as the F3s were seen with pink 1500ltr tanks