# SDR ASAA2021092536122

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2021
- Submitted: October 1, 2021
- Operation: Air carrier
- Aircraft: [N590AS](https://openairdocs.org/aircraft/N590AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35687
- Aircraft time: 49,962 hours, 14,910 cycles
- System (JASC): [3450 · Dependent Position Determining System](https://openairdocs.org/jasc/3450)
- Part: Computer
- Part number: 8221604101
- Part serial: 16YTD6
- Condition: Faulty
- Location: Ee Rack, E1
- Part time: 50,024 hours, 14,929 cycles
- Stage of operation: LD
- 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/ASAA2021092536122

## Discrepancy

PSEU LIGHT ILLUMINATED AFTER LANDING AND REMAINED ILLUMINATED FOR A FEW MINUTES - LIGHT EXTINGUISHED. GROUNDED - YES. CONFIRMED FCC-B INTERFACE FAULTS. REMOVED AND REPLACED FCC-B REF B737-800 AMM 22-11-33. OP CHECK GOOD. NO PSEU FAULTS. HGS SHOWS #2 RAD ALT WITHIN TOLERANCE. ETOPS GROUND VERIFICATION SUCCESSFUL.

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