NAF01 (probably PC-7 L-13) made two approaches at EHGG/GRQ and the intention was to made also some at EHLW, but due to the weather (no special VFR permitted and RDR assistance was not available at EHLW) the crew decided to cancel the apps. at Leeuwarde and made two more apps. at EHGG instead before leaving at 3000ft to ETNT (Wittmundhafen) for a TACAN app. followed by a fullstop.
No confirmation about the a/c type yet. They reported there were two POB, so almost sure a PC-7 as mentioned in the post above.
BR,
Robert
Edit: confirmed as PC-7 L-13