# SDR MALA010700

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2001
- Submitted: September 19, 2001
- Operation: Air carrier
- Aircraft: N520XJ
- Make and model: Bac AVRO146RJ85A
- Aircraft serial: E2345
- System (JASC): [3080 · Ice Detection](https://openairdocs.org/jasc/3080)
- Part: Printed Ckt Board
- Part number: 465465240
- Part serial: 3211
- Condition: Faulty
- Location: Ice Protection
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA010700

## Discrepancy

DURING FLIGHT 3681 ICE PROTECTION LOOK-UP LIGHT ILLUMINATED ON CWP WITH NO OVERHEAD INDICATION.  CREW WAS HEADING INTO WEATHER.  AIR TURNBACK TO MEM.  MAINTENANCE REPLACED PCB WQ7 P/N 46546-524-0, S/N ON 3211, S/N OFF 3204, REPLACED WQ1 P/N 46546-514, S/N ON 3739, S/N OFF 3566.  TESTED OPS CHECK GOOD.

---
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.