What was found
FLT 71 - OGG-HNL - THE NR 1 ENGINE RPM GAGE IMMEDIATELY DECREASED TO ZERO THE MOMENT THE AIRCRAFT LIFTED OFF THE RUNWAY. DID NOT ATTEMPT A RESTART, ACCOMPLISHED NORMAL SINGLE ENGINE LANDING WITH NO FURTHER PROBLEMS NOTED. REMOVED AND REPLACED NR 1 ENGINE FUEL PUMP P/N 7436025, PER PWA MM 72-60, PAG 611. OPS AND LEAK CHECK OK. REMOVED AND REPLACED NR 1 ENGINE FUEL CONTROL UNIT PER PWA MM 73-21-1. OPS AND LEAK CHECK OK. AIRCRAFT RETURNED TO SERVICE. (M)