# SDR ASAA2022051938435

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 2022
- Submitted: May 25, 2022
- Operation: Air carrier
- Aircraft: [N518AS](https://openairdocs.org/aircraft/N518AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35693
- Aircraft time: 48,300 hours, 14,197 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Sensor
- Part number: RP23500
- Part serial: EM4031645
- Condition: Faulty
- Location: #1 Engine
- Part time: 48,345 hours, 14,208 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022051938435

## Discrepancy

ENGINE #1 FAULT CODE 73-21701. ADIRU TAT DATA AND THE T12 SIGNAL DISAGREE. SHORT TIME DEFERRED PER ASA T/C 78273000. GROUNDED - YES. T12 SENSOR CHB PINS 1 TO 2 OPEN REF B737-800 FIM 73-28 TASK 801 TABLE 201. REPLACED T12 SENSOR, EEC TEST PASS B737-800 AMM 73-21-05. REPAIR CONFIRMATION SUCCESSFUL PER SAME.

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