# Incident 20090417009489I: Lear 31, Boca Raton, FL, April 17, 2009

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: April 17, 2009, 19:45 local time
- Place: Boca Raton, FL
- Airport: Boca Raton
- Damage: No damage
- Phase of flight: Cruise/Level Flight
- Operating rules: General operating rules (Part 91)
- Location: 26.3785° N, 80.1077° W: Placed by OpenAirDocs at BOCA RATON (BCT), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=26.3785&lon=-80.1077&mi=10
- Aircraft: N818LJ, a cancelled registration (https://openairdocs.org/deregistered/N818LJ-2018-08-02) (OpenAirDocs)
- Registry model: Learjet 31 (registry code 5170530, https://openairdocs.org/model/learjet-31) (OpenAirDocs)
- Registry engine: Alliedsign TFE731 series (registry code 02509, https://openairdocs.org/engine/alliedsign-tfe731-series) (OpenAirDocs)
- Reported make and model: LEAR 31
- People aboard: 6
- Fatal injuries: 0
- Other injuries: 0
- Pilot flight hours: 0 total, 0 in this make and model, 0 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20090417009489I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23)  THIS AIRCRAFT N818LJ HAD DEPARTED BOCA RATON AIRPORT (KBCT) AND LANDED AT FT. LAUDERDALE INTERNATIONAL AIRPORT (KFLL) WHERE THE CREW PICKED UP PASSENGERS.  AFTER DEPARTING (KFLL) APPROXIMATELY 20 MINUTES INTO THE FLIGHT AT 35,000 FT THE LEFT HAND ENGINE OIL PRESSURE GAUGE BECAME ERRATIC.  THE PILOT OPERATING THIS AIRCRAFT NOTIFIED ATC THAT THEY WANTED TO RETURN TO THE FLIGHT AT 35,000 FT THE LEFT HAND ENGINE OIL PRESSURE GAUGE BECAME ERRATIC.  THE PILOT OPERATING THIS AIRCRAFT NOTIFIED ATC THAT THEY WANTED TO RETURN TO THEIR HOME BASE (BCT).  ATC ASKED THE CREW IF THEY REQUIRED ASSISTANCE AND THE PILOT RESPONDED THAT WAS A "NEGATIVE" AND THAT THEY WERE NOT DECLARING AN EMERGENCY.  THE PILOT OPERATING THE AIRCRAFT HAD REDUCED POWER ON THE LEFT ENGINE TO IDLE AND THAT POINT DID A PRECAUTIONARY SHUTDOWN ON THE LEFT ENGINE TO LAND AT BOCA RATON AIRPORT.  AIRCRAFT WAS INDUCTED INTO MAINTENANCE BY RELIABLE JET MAINTENANCE, LLC AT HANGAR ONE AT BOCA RATON.  INVESTIGATION OF THIS OIL LEAK AFTER REMOVING THE LEFT ENGINE OIL DIPSTICK WAS READING NO INDICATION OF OIL.  MAINTENANCE CREW CHECKED THE LEFT HAND ENGINE OIL DIPSTICK O-RING AND IT WAS BROKEN.  REMOVED AND REPLACED O-RING AND SERVICED THE ENGINE WITH 5 QUARTS OF MOBIL 254 OIL.  MAINTENANCE CREW THEN PERFORMED GROUND FULL POWER ENGINE RUNS WITH NO EVIDENCE OF LEAKAGE.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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