As of my last knowledge update in October 2023, Papua New Guinea (PNG) does not have a significant air force or extensive military air defense capabilities. The Papua New Guinea Defense Force (PNGDF) includes a small air component, but it primarily focuses on light aircraft and helicopters for transport, reconnaissance, and search and rescue operations. The nation's defense budget and capabilities are quite limited compared to those of larger countries.
PNG's military capabilities are mainly concentrated on land and maritime operations, given its geography as an archipelago. The PNGDF often collaborates with other nations for training and support but does not possess a fully developed air defense system like many larger nations.
However, for the latest developments and specific details, it's always best to consult a current and reliable source, as military capabilities can change.