Airframe & Powerplant B737 B757 STETHOSCOPE Used to listen for internal leakage at hydraulic units during the Internal Leakage Check. TAGS: 29 OEM PN:: GA111D TOMX PN:: N/A TOOL TAG: COM-1797 Related posts Fuel tank access tableTERMOHIGROMETER LOGGERCF34-10E ENGINE STAND ADAPTER KITPISTOLA DE CALOR BOSCHLock – Leading Edge Slat…Interior Panel GageLock Aleron Actuator B757Vapor Barrier Caps and Plugs…SLIDE SAFETY SIGNOVERSPILL COLLECTION KIT