# SDR CALA2026041515382

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2026
- Submitted: April 15, 2026
- Operation: Air carrier
- Aircraft: [N69847](https://openairdocs.org/aircraft/N69847), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 42187
- Aircraft time: 34,992 hours, 12,693 cycles
- System (JASC): [3453 · Long-Range Navigation (LORAN) System](https://openairdocs.org/jasc/3453)
- Part: Antenna
- Part number: DM1601354001
- Condition: Sheared
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026041515382

## Discrepancy

DURING TROUBLESHOOTING OF LOG PAGE 8548682 FOUND LOWER ATC ANTENNA FIN SHEARED OFF. PERFORMED GVI OF LOWER ANTENNA AREA. NO OTHER DAMAGE FOUND BESIDES BROKEN ANTENNA. DURING REMOVAL OF ANTENNA, NO DAMAGED NOTED TO COAXIAL CONNECTOR, AND SURROUNDING AREAS SEEM TO BE IN GOOD CONDITION. LOG PAGE 8548682:TCAS FAIL FLAG ON PDF AND XPDR FAIL LIGHT PERFORMED BITE CHECK REF AMM TASK 34-53-00-710-801. FOUND BOTH XPNDRS FAULTING LOWER ANTENNA. PERFORMED GVI AND FOUND LOWER XPNDER ANTENNA DAMAGED/MISSING DUE POSSIBLE RAMPER RUNNING INTO IT. REMOVED AND REPLACED LOWER XPNDR ANTENNA REF AMM TASK 34-53-01-000-802 AND 34-53-01-400-802. PERFORMED ANTENNA TEST, FAULT NO LONGER ACTIVE. OKAY TO CONTINUE.

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