# SDR SCNA20250623225

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 19, 2025
- Submitted: June 23, 2025
- Operation: Air carrier
- Aircraft: [N805SY](https://openairdocs.org/aircraft/N805SY), registered now
- Make and model: Boeing 737-8Q8
- Registry model: [Boeing 737-8Q8](https://openairdocs.org/model/boeing-737-8q8) (OpenAirDocs)
- Aircraft serial: 30032
- Aircraft time: 72,700 hours, 27,509 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Oil System
- Condition: Leaking
- Location: Nr 1 Engine
- Stage of operation: CR
- 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/SCNA20250623225

## Discrepancy

NR 1 ENGINE OIL QTY DECREASED TO 2 QUART INFLIGHT. STARTED AT 18 QUARTS. LEVEL DID NOT RECOVER TO NORMAL. 6 QUART DROP/ 1 HOUR.  PERFORMED ENG VENTS AND DRAINS INSP. IAW AMM 71-71-00, FOUND FUEL/ OIL HEAT EXCHANGER LEAKING FROM DRAIN OUT OF SERVICABLE LIMITS. R/R OIL/ FUEL HEAT EXCHANGER IAW AMM 79-21-02. PERFORMED IDLE POWER LEAK CHECK FOR OIL/ FUEL HEAT EXCHANGER AND SERVO FUEL HEATER. IAW AMM 71-00-00. NO LEAKS NOTED. OK FOR SERVICE.

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