DEPARTMENT OF CIVIL AVIATION BHUTAN AIP AMDT / Request Airport Office / Department of Civil Aviation / Remarks DEPARTMENT OF CIVIL AVIATION BHUTAN Within AD HR / AD Administration / GUIDANCE ANDCONTROL SYSTEM AND MARKINGS Use / United Nations / Bhutan Air Service on Behalf of DGCA / ETA / DEPARTMENT OF CIVIL AVIATION BHUTAN Not / Centre of RWY / ATD / Post Office / BHUTAN AD / U.S. Securities and Exchange Commission / MET Office / AD HR Office / / /