When you scroll through the photos on the RMAF museum website there are actually two S61A-4 Nuri helicopters these should be the the M23-04 and M23-05.
On the TUDM facebook the is a report of a visit to Butterworth AFB to inspect the F-5 aircraft see the attached link. On the photos of 3 F-5 are shown one unmarked green the M29-09 and the M29-17. The last one is the candidate. https://m.facebook.com/story.php?story_fbid=pfbid0WrRXCzcWhRCVTeHiSJYqkd...
The serials for the aircraft/helicopter are M20-02 SA316B, M29-11 F5E and PC-7 is M33-07.
The CA-27 is the FM1901. All four can easily been seen from the main road when driving along.
On the oposite side of the runway there is another gate with a PC-7 M33-10.
The MD530G have been delivered to the TDDM at SZB to the article in the Star Newspaper. https://www.thestar.com.my/news/nation/2022/03/01/six-md530g-arrive-from-us-to-boost-malaysian-armys-air-reconnaissance The serials were M83-01T to M83-06T instead of the M82- range. The reason for the T at the e...
The glider inside the "Zweef-in" is the OK-5309 a Zlin Z.425 Sohaj 3 c/n 0205.
There is a small metal plate on the seat with the registration which can be read off as the glider is placed upside down.
Spotting is easy from the top of the carpark in front of the terminal. Taking pictures is also possible. With a car its just hop from one side to the other when something is arriving. You can read off the F15s from the carpark.