What system was equipped with the M7 Plus in the accident of the fire? What system was equipped with the M7 Plus in the accident of the fire? What system was equipped with the M7 Plus in the accident of the fire? What system was equipped with the M7 Plus in the accident of the fire? What system was equipped with the M7 Plus in the accident of the fire? What system was equipped with the M7 Plus in the accident of the fire? What system was equipped with the M7 Plus in the accident of the fire?