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MANILA -- Cebu Pacific could be penalized over an unprecedented wave of flight cancellations that is expected to last until May 10, an aviation official said Tuesday.

The country's largest airline said late Monday that it was cancelling 58 domestic round trip flights until May 10. It cancelled 44 flights from April 28 to 29, citing damaged aircraft and heavy traffic.

"If there are violations, definitely they (Cebu Pacific) will be meted out with appropriate penalty," said Civil Aeronautics Board chief legal officer Wyrlou Samodio.

The CAB is "examining every reason given by Cebu Pacific", Samodio said.

The Gokongwei-led airline earlier apologized for the cancellations. It said operations would normalize "over the coming days" leading to the May 13 elections.

Passengers affected by the disruption should be notified by the airline and may be entitled to hotel accommodation if they were already at the airport before the cancellations were announced, Samodio said.

The following round trip flights are cancelled until May 10, according to Cebu Pacific:

May 1 (Wednesday)

5J551/5J552 Manila-Cebu-Manila
5J623/5J624 Manila-Dumaguete-Manila
5J983 Manila-Davao
5J639/5J640 Manila-Puerto Princesa-Manila
5J504/5J505 Manila-Tuguegarao-Manila

May 2 (Thursday)

5J473/5J474 Manila-Bacolod-Manila
5J569/5J570 Manila-Cebu-Manila
5J983/5J984 Manila-Davao-Manila
5J455/5J456 Manila-Iloilo-Manila
5J891/5J892 Manila-Caticlan (Boracay)-Manila

May 3 (Friday)

DG6503/DG6504 Manila-Cebu-Manila
DG6241/DG6242 Manila-Caticlan (Boracay)-Manila
DG6663/DG6664 Cebu-Zamboanga-Cebu
DG6987-DG6988 Zamboanga-Tawi-Tawi-Zamboanga
5J984 Davao-Manila
5J 791/5J792 Manila-Butuan-Manila
5J 859/5J860 Manila-Zamboanga-Manila
5J 901/5J902 Manila-Caticlan (Boracay)-Manila
5J 631/5J632 Manila-Dumaguete-Manila

May 4 (Saturday)

DG6509/DG6510 Manila-Cebu-Manila
DG6462/DG6463 Cebu-Bacolod-Cebu
DG6515/DG6516 Cebu-Dumaguete-Cebu
DG6241/DG6242 Manila-Caticlan (Boracay)-Manila
5J 791/5J792 Manila-Butuan-Manila
5J 859/5J860 Manila-Zamboanga-Manila
5J 621/5J622 Manila-Bohol (Tagbilaran)-Manila
5J 327/5J328 Manila-Legazpi-Manila
5j 861/5J862 Manila-Zamboanga-Manila

May 5 (Sunday)

5J641/5J642 Manila-Puerto Princesa-Manila
5J 859/5J860 Manila-Zamboanga-Manila
5J 621/5J622 Manila-Bohol (Tagbilaran)-Manila
5J 327/5J328 Manila-Legazpi-Manila
5J389/5J390 Manila-Cagayan de Oro (Laguindingan)-Manila

May 6 (Monday)

5J641/5J642 Manila-Puerto Princesa-Manila
5J 859/5J860 Manila-Zamboanga-Manila
5J 629/5J630 Manila-Dumaguete-Manila
5J375/5J376 Manila-Roxas-Manila
5J377/5J378 Manila-Cagayan de Oro (Laguindingan)-Manila

May 7 (Tuesday)

5J 781/5J782 Manila-Ozamiz-Manila
5J504/5J505 Manila-Tuguegarao-Manila
5J389/5J390 Manila-Cagayan de Oro (Laguindingan)-Manila
5J471/5J472 Manila-Bacolod-Manila
5J461/5J462 Manila-Iloilo-Manila

May 8 (Wednesday)

5J641/5J642 Manila-Puerto Princesa-Manila
5J463/5J464 Manila-Iloilo-Manila
5J389/5J390 Manila-Cagayan de Oro (Laguindingan)-Manila
5J395/5J396 Manila-Cagayan de Oro (Laguindingan)-Manila
5J579 Manila-Cebu

May 9 (Thursday)

5J991/5J992 Manila-General Santos-Manila
5J635/5J636 Manila-Puerto Princesa-Manila
5J 857/5J858 Manila-Zamboanga-Manila
5J 327/5J328 Manila-Legazpi-Manila
5J981/5J982 Manila-Davao-Manila
5J 580 Cebu-Manila

May 10 (Friday)

5J991/5J992 Manila-General Santos-Manila
5J 859/5J860 Manila-Zamboanga-Manila
5J 629/5J630 Manila-Dumaguete-Manila
5J389/5J390 Manila-Cagayan de Oro (Laguindingan)-Manila
5J395/5J396 Manila-Cagayan de Oro (Laguindingan)-Manila