4 turns, word for word from the oral. Read the pilot lines out loud.
Varanasi Control IFLY 160, 40 NM inbound BBN, transponder Mode C is failed, aircraft RVSM non-compliant, request descent to FL 270
OR: Varanasi Control IFLY 160, 40 NM inbound BBN, altimeter system unreliable, aircraft RVSM non-compliant, request descent to FL 270
VT ROH, leave ATS route, descent FL 270, passing FL 290 resume normal navigation
Leaving FL 350 for FL 270, turning left to leave ATS route, descent FL 270, passing FL 290 will resume normal navigation