登机的旅客 meaning in Chinese

enplanements

Pa all remaining passengers please report to gate 27 immediately
所有还未登机的旅客请前立即前往27号通道
[ pa ] all remaining passengers please report to gate 27 immediately
所有还未登机的旅客请前立即前往27号通道
The baggage of the passengers already checked in but failed to board the aircraft shall not be loaded or retained in the aircraft
对已经办理登机手续而未登机的旅客的行李，不得装入或者留在航空器内。