Yes English language skills are a significant and mandatory component of aircraft pilot license training. In India and indeed internationally aviation instruction, ground school, and all air communication are conducted in English. To obtain or even register for a Commercial Pilot License (CPL) candidates are required to pass the ICAO English Language Proficiency test at Level 4 or above which evaluates speech fluency pronunciation structure vocabulary comprehension, and interaction. Without meeting this standard you simply cannot progress in your training or operate as a licensed pilot.
While this might sound stringent, the emphasis on English isn’t intended to block you rather it ensures safety, clarity, and effective communication in high pressure aviation contexts. Many aspiring pilots have voiced that lack of aviation specific English is a common stumbling block particularly when handling rapid ATC communications or emergency situations. That said flight instructors often note that if you can already communicate clearly you’ll likely be fine. Success is very much within reach through focused English training tailored to aviation situations.