Mike,
Yes, it was VERY scary, and to this day I am very nervous whenever lightning is around.
I cannot remember that much detail, not even the year, would have been in the 1970s.
Still now see people, even refuellers, that do NOT use all the earthing wires, especially the one from the tanker to the ground, which some people will tell you is NOT necessary.
That was the thing that saved the Engineer that day, always use all the bonding/earthing wires available............. We found the entry point of the lightning on the DC9, but there was NO exit point, it went out through the tanker, and had the tanker not been earthed properly, it would have ALL gone out through the Engineer, instead of only a small part of it, and surely been fatal.
Best regards,
airsupport.