The Mi-17 V5 helicopter was practising 'inter-valley movement' at Ghastoli helipad between Badrinath and Mana Pass when the mishap took place at around 9:25 AM, the IAF said.
However, all occupants including members of the crew and personnel of the Indian Army's 12 Grenadiers were reported safe, the IAF added.
There was neither any civilian casualty or damage to civilian property, it said.
A colonel rank officer is looking into the accident to ascertain its cause.