NEW DELHI/PARIS, June 20 (Reuters) - Record plane orders by India's top two carriers show the country's untapped potential for air travel and its rise as an aviation superpower, but recent airline failures and rows over regulations suggest progress may not be smooth. A day later, rival Air India firmed up an order for 470 Airbus and Boeing (BA.N) aircraft that, until Monday, had been the industry leading plane deal. LEASING CONCERNSBut while the opportunity in India is big, so are the risks, says Ameya Joshi, an independent aviation analyst. Leasing companies warn that restrictions on repossessing their assets in case of defaults will drive up costs for all Indian airlines - even for IndiGo and Air India. It will eventually help Indian airlines by lowering risk and moderating lease rental costs," said Joshi.

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Persons: India's, Jyotiraditya Scindia, planemakers, Ameya Joshi, Joshi, Aditi Shah, Tim Hepher, Joanna Plucinska, Mark Potter Organizations: NEW, Paris, Airbus, Air India, Boeing, Air, CAPA India, planemakers, IndiGo, lessors, Thomson Locations: NEW DELHI, PARIS, Air India, India, New Delhi, outdoing U.S, Paris