(Type 3 Primary Trainer) was the standard primary trainer aircraft, which was a version of British
Avro 504. (Type 93 Intermediate Trainer) was the standard intermediate trainer aircraft, which was affectionately referred to as
Akatombo (赤とんぼ) or red
dragonfly. Prior to June 1930, the NCO and enlisted pilot training program was called Flying Technique Trainee (飛行術練習生
Hikō-jutsu Renshū-sei) program. After that date, the program was renamed to Pilot Trainee (操縦練習生
Sōjū Renshū-sei) program, which was typically shortened to
Sōren (操練) for practical use. The trainees were selected from the personnel already serving in the navy based on a competitive written exam and then further through rigorous physical and flight aptitude tests. The flight training took place at Kasumigaura Airfield. Same as the officer pilot students, NCO/enlisted pilot trainees were normally allowed to go for the first solo after one month of flight training with an instructor. In 1928, a new parallel program was created to enable also civilian population to enter the training directly, which was called Flight Reserve Trainee Program (飛行予科練習生
Hikō Yoka Renshū-sei) program or
Yokaren (予科練) for short. The first class began their training in June 1930.
Yokaren program drew from male civilians aged from 15-17 and made the selection through a competitive written exam. Selected candidates then went through three-year training that involved basic education and learning of various naval skills. Due to the increased demand for pilots, the training duration was afterwards shortened to two and a half years during the
Second Sino-Japanese War and to two years during the
Pacific War. On the other hand, since
Sōren program candidates were older and already received basic education in the navy through
Kaiheidan (海兵団) units, the program progressed quickly to the actual flight training, thus lasting only about a year in total. Major changes to the NCO and enlisted programs were made in May 1937. A new program aimed at civilians between age 16-19 was added and named A-Class Flight Reserve Trainee (甲飛行予科練習生
Kō Hikō Yoka Renshū-sei) program. Due to the higher education level of candidates at the entry into the program, the training only lasted one year and a half in total (later shortened to one year). To follow suit, the original
Yokaren program was renamed to B-Class Flight Reserve Trainee (乙飛行予科練習生
Otsu Hikō Yoka Renshū-sei) program, where B-Class indicated the lower age of candidates at the entry compared to A-Class. In October 1940,
Sōren was also renamed to C-Class Flight Reserve Trainee (丙飛行予科練習生
Hei Hikō Yoka Renshū-sei) to fit into the same system. The flight training part of the programs was called Flight Trainee (飛行練習生
Hikō Renshū-sei) or
Hiren (飛練) for short, and lasted for about seven months: 2 months in a primary
trainer aircraft (typically
Yokosuka K2Y) and 5 months in an intermediate trainer aircraft (typically
Yokosuka K5Y). After the introduction of classes, the flight training was standardised for all classes. Same as the officer pilot students, the NCO and enlisted pilot trainees were at the end of the course sent to various air groups to specialise in a specific role: fighter, dive bomber, torpedo bomber, land-based bomber or seaplane. The specialisation was called Extended Education (延長教育
Enchō Kyōiku) and took from five to six months, depending on the role. ==Carrier operation training program==