What emerged was Lockheed’s P-3 Orion, a patrol airplane derived from ... Extensive modifications to the L-188’s engine mounts and wing structure adjoining the mounts solved the problem ...

The Lockheed P-3 Orion first flew in 1959, and it has been out of production since 1990. Yet the four-engine, turboprop anti-submarine aircraft is still in service today with the U.S., China ...