# SDR CALA2026060516849

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 3, 2026
- Submitted: June 5, 2026
- Operation: Air carrier
- Aircraft: [N76529](https://openairdocs.org/aircraft/N76529), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31652
- Aircraft time: 48,463 hours, 17,606 cycles
- System (JASC): [3457 · Global Positioning System](https://openairdocs.org/jasc/3457)
- Part: Antenna
- Condition: Faulted
- Location: Gps
- 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/CALA2026060516849

## Discrepancy

VNAV DISENGAGED ON TAKE OFF.  LNAV SHOWS ON DISPLAY BUT DID NOT CAPTURE OR CYCLE.   VNAV DISENGAGED ON TAKE OFF. LNAV SHOWS ON DISPLAY BUT DID NOT CAPTURE OR CYCLE MSG 22-11822 DISPLAYED REMOVED AND REINSTALLED SAME GPS 1 ANTENNA REF AMM 34-58-02. BOTH ANTENNA'S NOW INSTALLED WITH GEL GASKETS. BOTH GPS1 AND GPS2 ANTENNAS OPS CHECK OK REF PREVIOUS AMM. CLEARING BASED ON PREVIOUS UPDATE

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