What was found
L FUEL LO PRESS AMBER CAS: AFTER APPLYING TAKEOFF POWER L LOW FUEL PRESSURE AMBER MESSAGE ILLUMINATED. DISCONTINUED TAKEOFF AND RETURNED TO RAMP. // SIGNOFF// SWAPPED LH AND RH ENGINE FUEL LOW PRESSURE SWITCHES. FAULT FOLLOWED FROM LH ENGINE TO RH ENGINE. REINSTALLED ORIGINAL RH PRESSURE SWITCH ON RH ENGINE. LH ENGINE FUEL PRESSURE SWITCH ON ORDER WITH NELJETS MAINT CONTROL IAW RR BR700-710A2·20 EMM 73-33-01-000-801 REMOVED LEFT ENGINE RJEL LOW PRESSURE SWITCH FOR L FUEL LO PRESS AMBER CAS MESSAGE, INSTALLED INSPECTED UNIT IAW RR BR700:.710A2-20 EMM 73-33-01·000-801·A02/400-801-A02. OPERATIONAL AND LEAK CHECKS GOOD P/N OFF 21SN04-433 5/N R041930 PIN ON 2:LSN04-433 S/N W045918