A ranar 22 ga Maris, 1956, ya kasance a cikin wani Boeing B-29 Superfortress, wanda ya kasance a air-drop a Douglas D-558-2 Skyrocket. Ya zauna a dama matukin jirgi wurin zama yayin da hagu-gefen wurin zama kwamandan, But Stanchart, ya tashi da B-29. Kamar yadda suka hau zuwa 30,000 feet (9 km), da lambar hudu engine tsaya da kuma propeller fara windmilling (rotating freely) a cikin airstream. Hitting da sauya cewa zai dakatar da propeller ta spinning, Butchart samu shi sa'an nan kuma ya fara spinning, wannan lokaci har ma da sauri fiye da wasu; shi zai juya da sauri, kuma a kan daya daga cikin wadannan manufa da ya yi da farko jirgin sama hadarin a Edwards Sky. A ranar 22 ga Maris, 1956, ya kasance a cikin wani Boeing B-29 Superfortress, wanda ya kasance a air-drop a Douglas F-58-2 Skyrocket. Ya zauna a dama matukin jirgi wurin zama yayin da hagu-gefen wurin zama kwamandan, Butchart Stanchart, ya tashi da B-29. Kamar yadda suka hau zuwa 30,000 feet (9 km), da lambar hudu
Armstrong da kuma