# SDR UALA2012101805953

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2012
- Submitted: October 31, 2012
- Operation: Air carrier
- Aircraft: N417UA
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 483
- Aircraft time: 61,328 hours, 23,057 cycles
- Engine: Iae V2527A5
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Control Unit
- Condition: Malfunctioned
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012101805953

## Discrepancy

OPERATIONAL TEST OF SDCU 10WQ FAILS.  CABIN INDICATIONS ARE NORMAL, STEP 4. A. NO FLIGHT DECK EFFECTS OCCUR (NO MSTR CAUTION, CONT CHIME OR ECAM ALERT) FOR ANY & ALL LAVS.  REPLACED SDCU PER AMM, NO HELP.  RE-INSTALLED ORIG UNIT.  TESTED SYSTEM.  TESTED SYSTEM REF AMM 26 -17-00 PG 503 AND EC-RA 2617-01002. SYSTEM PASSED TEST.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.