THE cost of fuel in the world market has prompted flag carrier Philippine Airlines (PAL) to seek its third fuel surcharge in three months, documents from the Civil Aeronautics Board (CAB) showed. PAL wants to impose higher fuel surcharges on passenger fares to its international destinations particularly for the United States and Canada routes. If approved, international roundtrip fares will increase by $49. Rates for checked-in baggages will remain the same. In July, CAB gave PAL the green light to hike fuel surcharge to $37 from $22 for international passengers. The Lucio Tan-owned airline is also petitioning for an increase in cargo rates to $0.45 per kilo from $0.35 per kilo.