Certain laws not to be affected by this Act

Laws that punish mutiny or desertion by officers, soldiers, sailors or airmen in the service of the Government of India, and any special or local law, remain effective and are not overridden by this Act. When an offence falls under such a military or special/local statute, that statute governs investigation and prosecution. The IPC does not alter or cancel those separate provisions.

Ravi is an airman accused of leaving his post. Even if the facts might also fit an offence under the IPC, the special law for service personnel applies. Authorities will proceed under the mutiny/desertion statute rather than treat it solely as an ordinary IPC offence.