# SDR AALA202401236512

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 22, 2024
- Submitted: January 23, 2024
- Operation: Air carrier
- Aircraft: [N542UW](https://openairdocs.org/aircraft/N542UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4134
- Aircraft time: 47,265 hours, 17,952 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Relay
- Part number: E0744ZZZ28D
- Condition: Defective
- Location: Zone 100 - Fuse
- Stage of operation: AP
- 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/AALA202401236512

## Discrepancy

AIRCRAFT WAS GROUNDED: INBOUND CREW REPORTED NOSE LANDING GEAR AND LEFT MAIN LANDING GEAR GREEN SAFE INDICATION WAS FLASHING ON APPROACH. MAINTENANCE REPLACED THE #1 LAND GEAR CONTROL INTERFACE UNIT (LGCIU) PER AMM 32-31-71. (AALA202401233242) AND REPLACED RELAY 53GA (AALA202401236512). A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.

---
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.