“The last production B-45A (S/N 47-096) was converted for use as an in-flight engine test aircraft and redesignated JB-45A (J for temporary test status). The test engine was attached to a retractable pylon mounted in the modified bomb bay. Once the aircraft was airborne the test engine was lowered into the slipstream and started..”
June 30, 2009, 7:02am
