All the passengers are safe and will be flying to their destination in another aircraft, he added.
"Full emergency was declared at 2015 hrs for AI 985 arriving from Ahmadabad due to hydraulic failure," a Mumbai airport official said.
The flight landed safely at 2036 hrs, the official added.
There were 176 passengers onboard apart from the crew, he said adding the aircraft is being changed for the onward flight.
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