LISBON, Portugal (AP) - Portugal's national airline is enduring its fifth walkout this year, with a 24-hour strike by cabin crew grounding around 200 flights.

LISBON, Portugal (AP) Portugal's national airline is enduring its fifth walkout this year, with a 24-hour strike by cabin crew grounding around 200 flights.

The Civil Aviation Cabin Crew Union announced Tuesday's strike in October, allowing TAP Air Portugal to move thousands of passengers onto flights with other airlines or switch their day of travel.

The flag carrier says it has lost millions of euros (dollars) due to stoppages this year by pilots, cabin crew and airport service staff.

The strikes have mostly been over pay and working conditions, though unions are also uneasy about government plans to privatize the company before next November's general election.

The government announced last month it intends to sell a 66 percent stake in the airline, with 5 percent of that set aside for its 7,500 staff.