# SDR AALA202604176385

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2026
- Submitted: April 17, 2026
- Operation: Air carrier
- Aircraft: [N860NN](https://openairdocs.org/aircraft/N860NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 40583
- Aircraft time: 45,660 hours, 19,658 cycles
- Engine: Cfmint CFM567B243
- Engine time: 46,614 hours, 19,554 cycles
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Line
- Condition: Loose
- Location: Engine Oil
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202604176385

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: SUSPECTED OIL LEAK IN THE NUMBER 2 ENGINE OIL QUANTITY WAS 12 QTS, AFTER TAKE OFF DRAMATICALLY DROPPED TO 9QTS, STAYED AT 9QTS FOR ABOUT AN HOUR. AFTERWARDS, IT THEN DROPPED TO 5QTS. THEN SLOWLY DECREASED BY 1QT EVERY 20 MINUTES. LOWEST OBSERVED WAS 2QT BEFORE LANDING. AIRCRAFT DIVERTED TO AND LANDED SAFELY AT SJU.  SERVICED ENGINE WITH OIL, PER MM 12-13-11. FOUND OIL SUPPLY TUBE LOOSE ON RIGHT HAND ENGINE. RETIGHTENED SUPPLY TUBE, PER MM 72-56-00. ACCOMPLISHED VISUAL CHECK OF MCD, PER MM 79-00-00. NO DEBRIS FOUND. RAN ENGINE AT 75%, PER MM 71-00-00. NO OIL LOSS SEEN.

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