Drop in cruise level mid flight

SimBrief Dispatch
1

Any idea why there’s a large drop in cruise level around ILGOL? (Flight is EGKK to FACT).

SimbriefEGKKFACT
SimbriefEGKKFACT836×697 147 KB

NOTAMs for FNAN FIR are NIL. Thanks.

2

Probably an airway restriction.

Try replacing VNA ARGOL R987 ILGOL UN187 VEDRY with VNA UN187 VEDRY in your route.

Regards,

Tim

3

Probably an airway restriction.

Yep, thanks. Right clicking on that airway segment in Navigraph shows Max Altitude of FL245 for it.