In what range of registration numbers would the Airfield Service Trucks fall?
From my research, I have found a couple of other Airfield Service Truck registration numbers.
Hazel, the closed cab in the picture below, is 804445

342-FH-3A17550-52447AC -1 by Military Veterans Museum & Education Center, on Flickr
The next photo shows another hard cab with a registration number of 804494

342-FH-3A30693-57566AC -1 by Military Veterans Museum & Education Center, on Flickr
This hard cab has what looks like 804609
Is is safe to assume all airfield service trucks are a 6 digit number starting with 80?
For reference, the Museum's F-3 info is below:
Serial number CCKW353-41976-A1
Date of delivery 192141 (that's what's stamped on the tag)
Cab style 1608
Cab serial number 2296

Airfield Service CCKW - Data plate by RLB Photography, on Flickr
Thanks!
~Robert