# SDR CALA2020120701343

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2020
- Submitted: December 7, 2020
- Operation: Air carrier
- Aircraft: [N26952](https://openairdocs.org/aircraft/N26952), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 36403
- Aircraft time: 27,468 hours, 2,530 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 100260201
- Condition: No Test
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2020120701343

## Discrepancy

R4 DOOR AREA ALL EXIT SIGN FOUND MALFUNCTION, REF NON-ROUTINE NR 9419569.  PLEASE NOTE THE EXIT SIGN INSTALLED POSITION SHOULD READ R4 DOOR.  ROTABLE PARTS CHANGE WAS INDICATED-TT NR 1197425 S/N OFF 0441 BATTERY, WIFI E OFF 78-3350-9-9001 0441 ON 78-3350-9-9001 7981.  REPLACED R4 DOOR WELS BATTERY.  INSTALLATION TEST FOUND NORMAL, REF AMM 33-51-07-02B-720A REV 142.

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