As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR RETURN NR 1 OIL PRESS GAUGE FLUXED FROM 50 TO 0 THEN BACK TO 40. W/NO OIL WARNING LIGHT SO ENGINE WAS NOT SHUT DOWN. REMOVED AND REPLACED OIL PRESS XMITTER OPS AND LEAK CHECK GOOD. DEPARTURE AIR READINGS NORMAL. REMOVED AND REPLACED NR 2 ENGINE OIL PRESSURE SWITCH P/N 8D1437 OPS AND LEAK CHECK GOOD. (A)