# SDR AALA202505159407

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2025
- Submitted: May 15, 2025
- Operation: Air carrier
- Aircraft: [N933AN](https://openairdocs.org/aircraft/N933AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 30080
- Aircraft time: 62,949 hours, 26,349 cycles
- System (JASC): [3433 · Microwave Landing System](https://openairdocs.org/jasc/3433)
- Part: Transceiver
- Part number: 8220334004
- Part serial: A3AX
- Condition: Faulted
- Location: Zone 100
- Part time: 6,188 hours, 3,047 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202505159407

## Discrepancy

AIRCRAFT WAS GROUNDED: AT 10.000FT RED LANDING GEAR WARNING LIGHTS AND HORN CAME UP. **SUPPLEMENTAL REPORT FOR (AALA202505149407): REMOVE AND REPLACED RADIO ALTIMETER TRANSCEIVER (AALA202505149407), PER AMM 34-33-21. REMOVE AND REPLACED ALL 4 RADIO ANTENNAS (AALA202505156359, AALA202505154554, AALA202505150214, AALA202505154106), PER 34-33-11**(CLOSED).

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