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A C525 pilot at FL400 reported a crew alert system (cas) low oil pressure light and requested clearance to their departure airport. The controller working the flight vectored another aircraft to allow an enroute descent. The pilot discovered a loose engine oil cap.
| Attributes | |
| ACN | 1295899 |
| Time | |
| Date | 201509 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Citationjet (C525/C526) - CJ I / II / III / IV |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Route In Use | Airway ZZZ |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Oil Filler Cap |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 12 |
| Person 2 | |
| Function | Pilot Flying Single Pilot |
| Qualification | Flight Crew Instrument Flight Crew Private |
| Experience | Flight Crew Last 90 Days 57 Flight Crew Total 1900 Flight Crew Type 140 |
| Events | |
| Anomaly | ATC Issue All Types Aircraft Equipment Problem Less Severe Conflict Airborne Conflict Deviation - Procedural Published Material / Policy |
Narrative:
A C525 was level at FL400 and called me and told me that he just lost an engine and needed to return to his departure airport. He was originally going to the midwest. I asked him if he could stay on his present heading for a moment because I knew he had traffic right under him at FL390. He said he should be able to. I just needed him to diverge from the FL390 traffic so I could start him down and turn him back to the east. I turned the FL390 traffic 20 left to get him out from under the C525 and that was when C525 advised that he was descending and couldn't hold altitude. I said ok and turned the FL390 traffic 40 left. I then cleared C525 to descend and maintain FL240. I also had to turn another southbound aircraft out of his way. I turned C525 to 190 heading and then once he was under the FL390 traffic I cleared him to this destination. C525 and the FL390 traffic did lose separation.keep calling traffic the whole time.
Original NASA ASRS Text
Title: A C525 pilot at FL400 reported a Crew Alert System (CAS) Low Oil Pressure light and requested clearance to their departure airport. The controller working the flight vectored another aircraft to allow an enroute descent. The pilot discovered a loose engine oil cap.
Narrative: A C525 was level at FL400 and called me and told me that he just lost an engine and needed to return to his departure airport. He was originally going to the Midwest. I asked him if he could stay on his present heading for a moment because I knew he had traffic right under him at FL390. He said he should be able to. I just needed him to diverge from the FL390 traffic so I could start him down and turn him back to the east. I turned the FL390 traffic 20 left to get him out from under the C525 and that was when C525 advised that he was descending and couldn't hold altitude. I said Ok and turned the FL390 traffic 40 Left. I then cleared C525 to descend and maintain FL240. I also had to turn another southbound aircraft out of his way. I turned C525 to 190 heading and then once he was under the FL390 traffic I cleared him to this destination. C525 and the FL390 traffic did lose separation.Keep calling traffic the whole time.
Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.