AMENDMENT TO PHILIPPINE CIVIL AVIATION REGULATIONS β AIR NAVIGATION SERVICES (CAR-ANS) PART 4 INCORPORATING AMENDMENT 56 TO ICAO ANNEX 4
National Administrative Register [ CAAP MEMORANDUM CIRCULAR NO. 26-14, September 16, 2014 ]
Text Available at the Office of the National Administrative Register, U.P. Law Complex, Diliman, Quezon City
Adopted: 16 September 2014