As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CHECKS SHOWED LOSS OF ENGINE POWER AT A HOVER. INSUFFICIENT POWER AVAILABLE TO EVEN EXECUTE A NORMAL TAKEOFF. BLEED AIR VALVE WASN'T CLOSING UNTIL 98% NG AND BURNING SMELL STILL NOTICEABLE. **SUPPLEMENTAL INFORMATION**10-29-2021, FOUND THAT THE REAR INLET BARRIER FILTER RUBBER SEAL HAD CAME UN GLUED FROM ENGINE COWLING.