As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: LEFT SPAR VALVE CLOSED LIGHT ILLUMINATED IN FLIGHT. ENGINE STILL RUNS. LIGHT FINALLY WENT OUT ON ITS OWN. REPLACED P5-2 FUEL SYSTEM MODULE PER AMM 28-22-43. ACCOMPLISHED SATISFACTORY # 1 ENGINE RUNS PER AMM 71-00-00.