# SDR YENA2023041400403

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 12, 2023
- Submitted: April 14, 2023
- Operation: Air carrier
- Aircraft: [N4048J](https://openairdocs.org/aircraft/N4048J), registered now
- Make and model: Airbus A321-271N
- Registry model: [Airbus A321-271N](https://openairdocs.org/model/airbus-a321-271n) (OpenAirDocs)
- Aircraft serial: 10446
- Aircraft time: 5,964 hours, 870 cycles
- System (JASC): [2800 · Aircraft Fuel System](https://openairdocs.org/jasc/2800)
- Part: Controller
- Part number: 74434112
- Part serial: 7443411N00518
- Condition: Failed
- Location: Fuel
- Stage of operation: UK
- 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/YENA2023041400403

## Discrepancy

FLT#2104, BOS-LGW. (ETOPS) 'PIREP: PERSISTENT FUEL ACT XFR FAULT. ( AUTO TRANSFER SYSTEM (ACT) 1), 2) ADDITIONAL CENTER TANK(S) (ACT).  REF TSM 28-46-15, ASM 28-46-01 AND AWM 28-46-19, REMOVED AND REPLACED AFMC (FIN 2QN)  IAW 28-51-35 AND HI LVL SNSR ACT1 SEL SW (FIN72QJ1) IAW ESMP 20-45-21. AS A PRECAUTIONARY /T/SHOOTING PER LEADERSHIP REQUEST. TEST OF THE HI LVL SNSRS ACCOMPLISHED IAW 28-46-00, ALL OPS CHK OKAY.

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