As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 6266 - IAD-BTV - DURING CLIMB-OUT THE LEFT ENGINE OIL PRESSURE FLUCTUATED BETWEEN 20-50 PSI. AIRCRAFT RETURNED TO IAD WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED THE OIL PRESSURE TRANSDUCER. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (W)