Jet Airways said on Tuesday that its deputy chief executive and chief financial officer Amit Agarwal has resigned. The now-grounded airline said that Mr Agarwal stepped down due to personal reasons. Shares in Jet Airways declined more than 12 per cent during Tuesday's session. Mr Agarwal's resignation comes at a time the airline is struggling with a debt of more than $1.2 billion, and owes money to lessors, suppliers, pilots and oil companies. His resignation took effect on May 13, it said in a regulatory filing.