• Bid Bulletin No. 2 - Bid No. 21-007-03 CHARLIE (Procurement of Bukidnon Airport Development Project-Phase II (Site Work Preparation of the Landside Area))
• Bid Bulletin No. 2 - New Schedule for Bid No. 21-006-03 CHARLIE (Upgrading of Power System and Construction of Powerhouse at Calbayog Airport)
• Bid Bulletin No. 1 - New Schedule for Bid No. 21-007-03 CHARLIE (Bukidnon Airport Development Project-Phase II)
• Supplemental / Bid Bulletin No. 1 - Bid No. 21-006-03 CHARLIE (Upgrading of Power System and Construction of Powerhouse at Calbayog Airport)
• Bid Bulletin No. 3 - New Schedule for Bid No. 21-004-02 CHARLIE (Surigao Airport Development Project)
• Bid Bulletin No. 3 - New Schedule for Bid No. 21-005-02 CHARLIE (Maasin Airport Development Project)
• Bid Bulletin No. 2 - New Schedule for Bid No. 21-004-02 CHARLIE (Surigao Airport Development Project)
• Bid Bulletin No. 1 - New Schedule for Bid Nos. 21-002-02 CHARLIE (Lubang Airport Development Project) and 21-003-02 CHALIE (Purchase and Installation of Communications Equipment for Bicol (New Legazpi) International Airport)
• Bid Bulletin No. 2 - New Schedule for Bid No. 21-005-02 CHARLIE (Maasin Airport Development Project)
• Bid Bulletin No. 1 - New Schedules for Bid Nos. 21-004-02 CHARLIE (Surigao Airport Development Project) and 21-005-02 CHARLIE (Maasin Airport Development Project)