Thanks for that, EW, but I would have thought with 'modded pumps' the problem of 'cooling' would not arise since they shut off or would be shut-off by crew, or have I misunderstood the mod?
My understanding of the AD was
''Center Tank Fuel Pumps
Intentional dry running of a center tank fuel pump (low pressure light illuminated) is prohibited.''
and that the 'no ground running <453kg' was only listed as an alternative means of compliance so the primary compliance should be ok?