Ƙirƙirar wani nau'i mai mahimmanci na wannan jumla Ƙananan iko na sauri sun kasance haske; saboda haka, saurin gudu da kuma janyewa sun yiwu.
Tabbas, wani nau'i mai rikitarwa na jumla shine "High speed controls sun kasance haske don haka saurin saurin juyawa da fitarwa sun yiwu duk da cewa P - 39 dole ne a gudanar da shi a cikin nutsewa tunda yana da saurin daidaitawa, wanda ke tunatar da Spitfire. "