# SDR ASAA2023021541973

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 2023
- Submitted: February 17, 2023
- Operation: Air carrier
- Aircraft: [N563AS](https://openairdocs.org/aircraft/N563AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35180
- Aircraft time: 58,612 hours, 17,252 cycles
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: TX
- 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/ASAA2023021541973

## Discrepancy

ON TAXI OUT ENGINE CONTROL LIGHT ILLUMINATED #1 ENGINE. GROUNDED - YES. ACCOMPLISHED EEC BITE FOUND FAULT 75-20581 (TBV DEMAND AND POSITION SIGNALS DISAGREE). ACCOMPLISHED ACTUATORS TEST NO CURRENT FAULTS NOTED. ENGINE CONTROL LIGHT EXTINGUISHED. REF B737-800 FIM 73-00 TASK 801 AND FIM 75-23 TASK 801.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.