Boeing-Vertol CH-46B

In 1962, the US Air Force ordered twelve XH-49A (based on the BV-107/II) for Texas Tower support and Artic Search And Rescue (SAR) duties. The airframes were assigned USAF serials 62-12473/12484. In early 1963, the USAF visited the Vertol factory in Morton, PA and determined that Vertol could not meet the rigid delivery requirement, and so cancelled the contract with no airframes having entered production. The USAF ordered the Sikorsky S-61R as the CH-3C instead.