As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT APPROX 1130Z ON 7/6/09 CREW EXPERIENCED A MOMENTARY LOSS OF OIL PRESSURE ON THE NR 1 ENGINE. REDUCED POWER THEN INDICATION WENT AWAY, WENT BACK TO FULL POWER. AT 1135Z FELT A VIBRATION AND THEN ANOTHER TOTAL LOSS OF OIL PRESSURE WITH TORQUE INDICATION. CREW DECLARED EMERGENCY, DIVERTED KBQK. SECURED NR 1 MOTOR AND LANDED WITHOUT INCIDENT.