# SDR SWIA2026091577210

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 15, 2026
- Submitted: September 17, 2026
- Operation: Air carrier
- Aircraft: [N270SY](https://openairdocs.org/aircraft/N270SY), registered now
- Make and model: Emb ERJ 170-200 LL
- Registry model: [EMB ERJ 170-200 LL](https://openairdocs.org/model/embraer-s-a-erj-170-200-ll) (OpenAirDocs)
- Aircraft serial: 17000728
- Aircraft time: 18,492 hours, 14,892 cycles
- Engine: Ge CF348E5A2
- Engine time: 417 hours, 312 cycles
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: B-Nut
- Condition: Leaking
- Location: Zone 400
- Stage of operation: NR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA2026091577210

## Discrepancy

ENGINE 1 LOW OIL PRESSURE IN DESCENT, SHUTDOWN ENG 1 IAW QRH UPON LANDING ENG EXCEEDANCE OIL QTY DROPPED IN FLIGHT.  (FLT 4117).  INTERROGATED CMC & FOUND ENG EXCEEDANCE OF 21PSI FOR 828 SECS PERFORMED TROUBLESHOOTING IAW LMM 72-00-00-810-020.  SERVICED 1 ENG WITH 9QTS OF OIL COMPLIED WITH LMM 77-00-00 SPECIAL PROCEDURES 015 & 79-00-00, SPECIAL PROCEDURES 003, NO METAL DEBRIS NOTED IN THE FILTER OR CHIP SYS.  PERFORMED DRY RUN OF ENG 1 & FOUND OIL LEAK FROM LOOSE B-NUT ON SUMP OIL SUPPLY LINE LEADING INTO FUEL/OIL HEAT EXCHANGER. TIGHTENED LOOSE LINE, CLEANED ENGINE OF OIL, & PERFORMED TWO EXTENDED ENGINE RUNS TO CHK FOR ADDITIONAL LEAKS, NONE NOTED 1 ENG OIL PRESSURE & LEVEL REMAINED NOMINAL MCI CREATED FOR DAILY INSP OF ECD FOR METAL DEBRIS FOR 50 FLT CYCLES IAW LMM 72-00-00-280-013, ENG OPS WITH INADEQUATE OIL SUPPLY.

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