What was found
SMOKE ODOR CONDITIONAL INSP REQUIRED PER AMM 05-51-XX DUE TO AN INCIDENT REPORTED BY THE CREW. REF AMM 05-51-58-800-801-C3, INITIAL INSPECTION AND OPERATIONAL CHECKS CARRIED OUT UP TO C (2) (H) ODOR MORE APPARENT FROM LT PACK THAN RT WITH APU PROVIDING PNEUMATIC AIR. UNABLE TO CARRY OUT ABOVE IDLE ENGINE RUNS AT THIS TIME DUE LOCAL RESTRICTION. LT ENGINE IDLE RUN CARRIED OUT, PROVIDING PNEUMATIC AIR TO THE LT PACK, ODOR STILL APPARENT. APU OIL LEVEL VISUALLY CONFIRMED. APU PNEUMATIC DUCT SPLIT IN STAB BAY, NO EVIDENCE OF OIL OR ODOR.