MOS HRS1MSC REF: DTR 57-53-11 AFL 56000 56000 55078 57-53-12-1 INSPECT FRONT SPAR. INBOARD MAIN FLAP FRONT SPAR UPPER CHORD. AWAY FROM RIB. ITEF MFSTA 73 TO 167 PSE MOS HRSAISC REF: DTR 57-53-12-1 AFL 56000 56000 55078 57-53-12-2 INSPECT FRONT SPAR. INBOARD MAIN FLAP FRONT SPAR UPPER AND LOWE