What was found
(CAN) AS CREW DESCENDED, POWER LEVERS REDUCED TO FLIGHT IDLE FOR RAPID DESCENT TO 1500 FT AGL FOR SURVEILLANCE OPS. CABIN AIR BECAME LADEN WITH AN OIL ODOR FOR APPROXIMATELY 30 SECONDS. ACFT RETURNED TO BASE FOR TROUBLESHOOTING.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) AS CREW DESCENDED, POWER LEVERS REDUCED TO FLIGHT IDLE FOR RAPID DESCENT TO 1500 FT AGL FOR SURVEILLANCE OPS. CABIN AIR BECAME LADEN WITH AN OIL ODOR FOR APPROXIMATELY 30 SECONDS. ACFT RETURNED TO BASE FOR TROUBLESHOOTING.