# SDR AALA2019080529012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2019
- Submitted: August 5, 2019
- Operation: Air carrier
- Aircraft: [N187US](https://openairdocs.org/aircraft/N187US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1704
- Aircraft time: 58,831 hours, 22,123 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Control Panel
- Part number: 330TS08Y
- Part serial: 588
- Condition: Faulty
- Location: Fire Detection
- Part time: 64,813 hours, 28,729 cycles
- Stage of operation: NR
- 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/AALA2019080529012

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT REPORTS WHILE ALL INDICATIONS NORMAL APU FIRE AMBER DISCH LIGHT OBSERVED TO BE ILLUMINATED IN FLIGHT. MAINTENANCE INSPECTED PRESSURE SWITCH CONNECTOR 11WF-A & WIRINGS FROM CONNECTOR TO THE BACK SIDE OF AFT PRESSURE BULKHEAD, NO FAULT FOUND. TROUBLESHOT IAW TSM 26-22-00-810-803-A, NO PROBLEM FOUND, TEST OK. REMOVED AND REPLACED ENG/APU FIRE PANEL (1WD) IAW AMM 26-12-12, SYSTEM OPS CHECK GOOD.

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