# SDR ASAA2019041929056

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 2019
- Submitted: April 22, 2019
- Operation: Air carrier
- Aircraft: [N506AS](https://openairdocs.org/aircraft/N506AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35690
- Aircraft time: 40,876 hours, 12,514 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7933 · Engine Oil Temperature](https://openairdocs.org/jasc/7933)
- Part: Probe
- Part number: RP23800
- Condition: Malfunctioned
- Location: Nr 2 Oil Temp
- Stage of operation: IN
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019041929056

## Discrepancy

#2 ENGINE TREND DATA SHOWS A SUDDEN DECREASE IN OIL TEMPERATURE. GROUNDED - YES. REPLACED OIL TEMP SENSOR AND PERFORMED INSTALLATION TEST, OPS CHECK GOOD IAW B737-800 AMM 79-34-02. DURING INSTALLATION TEST ONLY FAULT MESSAGE SHOWN WAS 78-21492.

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