[2][3] Ng attended St. Gabriel's Secondary School and National Junior College.

In 1977, Ng was awarded the Singapore Armed Forces Overseas Merit Scholarship to study aeronautical engineering at the University of Manchester and obtained a Bachelor of Science.

[6][7] Ng succeeded Goh Yong Siang as the Chief of Air Force on 1 July 1998 and stepped down on 1 April 2001.

[5][8][9] On 1 July 2001, Ng joined Singapore Airlines as Senior Vice President (Flight Operations Projects).

[8] In the aftermath of the Singapore Airlines Flight 006 accident, Ng signed off on the termination of the captain and the first officer on 26 July 2002, with the International Federation of Air Line Pilots' Associations calling the action as "unjust, unwarranted and unreasonable".