# SDR AU000550

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 11, 2000
- Submitted: August 4, 2000
- Operation: General aviation
- Make and model: Boeing 747438
- System (JASC): [5714 · Wing, Center Box](https://openairdocs.org/jasc/5714)
- Part: Drain Line
- Condition: Blocked
- Location: Wing Center Box
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU000550

## Discrepancy

(AUS) WING CENTRE SECTION CAVITY DRAIN BLOCKED BY WAX BUILDUP. LARGEAMOUNTS OF DEBRIS FOUND IN AREA. FOUND DURING INSPECTION IAWAD/B747/71.

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