# SDR USAASA01045

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2001
- Submitted: September 5, 2001
- Operation: Air carrier
- Aircraft: N166US
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1436
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Warning System
- Condition: Malfunctioned
- Location: Cockpit
- Stage of operation: IN
- How discovered: C
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAASA01045

## Discrepancy

SFO - DURING THE TEST OF THE EMERGENCY LIGHTING SYSTEM, RECEIVED AN 'EPSU ARMED' MESSAGE ON THE CABIN INTERCOMMUNICATION DATA SYSTEM.  MAINTENANCE DID A BITE TEST OF THE CABIN INTERCOMMUNICATION DATA SYSTEM AND PERFORMED AN EMERGENCY LIGHTS TEST.  NO FAULTS WERE FOUND.  OK FOR SERVICE.  (M)

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