Q was assigned to:
Bristol
Fairchild
Stinson
Chas. Ward Hall Inc.
The R4Q-1 and R4Q-2 were the Marine version of the Fairchild C-119 Packet -
AKA Flying Boxcar.
Jack
"Steven P. McNicoll" wrote in message
link.net...
"Orval Fairbairn" wrote in message
news

Ah, but it DID allow R4Q and R4Q2 
No, but it could have allowed R4Q-2, if a manufacturer had been assigned
the
letter Q.