Design work was conducted at an accelerated pace, with work on the airframe commencing from August 1942, even before the drawings were completed on 20 September 1942.
Desain pekerjaan dilakukan dengan kecepatan dipercepat, dengan bekerja pada badan pesawat sejak Agustus 1942, bahkan sebelum gambar diselesaikan pada tanggal 20 September 1942.