# SDR CALA2025052104894

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 2025
- Submitted: May 21, 2025
- Operation: Air carrier
- Aircraft: [N838UA](https://openairdocs.org/aircraft/N838UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1477
- Aircraft time: 69,720 hours, 30,953 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Contactor
- Part number: 640CC04A2Y00
- Condition: Faulty
- Location: Generator
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025052104894

## Discrepancy

GEN 2 FAILURE/TR2  FAILURE CAP REPORTED T/O INHIBIT OCCURRED DURING T/O FOLLOWED BY A TR2 FAULT AND GEN 2 FAULT. BOTH SCREENS ON FO SIDE BLANKED OUT. ABLE TO RECOVER GEN 2 BY CYCLING. TR2 FAULT REMAINS. PFR PIC ATTACHED. UPDATING TIME REF TSM 24-20-00-810-814 AND ASM 24-22-03 . CHECKED PINS 10,11,12 BETWEEN 30XN2 TO PINS 10,11,12 OF 29 XN NO SHORTS TO GROUND. CHECKED BETWEEN GCU 2 TO IDG 2 CONNECTOR A  PINS 13A 13B 13C 13 D TO PINS 1  6  7  8 . NO SHORTS OR OPEN RESISTANCE CHECKS GOOD. PLEASE RUN ENGINE #2 IAW 71-00-00-710-043 AND DO OPS CHECKS SEE PICTURE FOR MORE REF. SEE LP 4897049 FOR CONTACTOR REPLACEMENT. RAN #2 ENGINE AND CHECKED ELEC REF AMM 24-41-00-740-004.  VOLTS AND FREEQS NORMAL. OPERATION NORMAL.

---
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.