↑A1 type Airborne Lifeboats laid up at Clark Field, Philippines in 1946. Referring to the above photo, the airborne lifeboat at Clark Field with number 419 became USAF A-1-419. In the plan the old AAF serial number was simply appended after the role and type designators – and went from A-1-3 up to A-1-449. The block A-1-501 through A-1-650 was not used. Image courtesy of U.S. Crash Boats.
↑Airborne Lifeboat (1944). British Pathé.