Final answer:
Responsibility for indoctrination and training for the Plane Captain Qualification Program lies with the Maintenance or Operations Department in a naval aviation unit responsible for aircraft upkeep and operations.
Step-by-step explanation:
The responsibility for ensuring that personnel receive the proper indoctrination and follow-on training for the Plane Captain Qualification Program typically rests with the command or organization where the aircraft are based and operated. This would most often be under the oversight of the department in charge of aircraft maintenance and operations, such as the Maintenance Department or the Operations Department within a naval aviation squadron or air wing. Their duties include making sure standards are met for safety and performance through a structured training program that includes both instructor-led training and practical experience.