What was found
RTB - TAXI OUT LT FWD FUEL BOOST PUMP FAILED. FOUND PUMP OPERATING NORMAL. FOUND C/P PINS GREEN AND SWITCH PINS CONTAMINATED AT LOW PRESS SWITCH S71. REPINNED CONNECT AND REPLACED LOW PRESSURE SWITCH S71. WITH SWITCH OUT AND P ON FOUND NO FLOW FROM LOW PRESS LINE-AFTER SEVERAL MINUTES BLOCKAGE CLEARED-PURGED LINE FOR SEVERAL MORE MINUTES UNTIL ALL FLOW CLEAR. REINSTALLED SWITCH ALL, OPS NORMAL NO FURTHER CONTAMINATION FOUND IN TANK.