Ordered on 23 August 1938 and completed as the prototype long-range patrol XPB2M-1, it was first flown on 3 July 1942 and converted in December 1943 to transport variant and designated XPB2M-1R.
It was ordered on 23 August 1938. It was completed as the prototype long-range patrol XPB2M-1. It was first flown on 3 July 1942. It was first converted in December 1943. This was to transport variant. It was designated XPB2M-1R.