# SDR 99ZZZX1342

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 2, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N770BB](https://openairdocs.org/aircraft/N770BB), registered now
- Make and model: Boeing 7572J4
- Aircraft serial: 25220
- System (JASC): [2810 · Fuel Storage](https://openairdocs.org/jasc/2810)
- Part: Fuel Tank
- Part number: 4015779101
- Condition: Ruptured
- Location: Fuselage
- Part time: 1,578 hours
- Stage of operation: IN
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX1342

## Discrepancy

THE FORWARD AND AFT AUXILIARY FUEL TANKS WERE REMOVED AND RE-INSTALLED FOR FUSELAGE LOWER LOBE INSPECTION AND FUEL TANK INSPECTION.  AFTER RE-INSTALLATION, THE AUXILIARY TANKS WERE BEING FUELED FOR OPS AND LEAK CHECK.  DURING FUELING, THE FORWARD NR 4 AUXILIARY FUEL TANK RUPTURED.  THE CAUSE IS STILL BEING INVESTIGATED BY THE REPAIR STATION AND THE AUXILIARY FUEL TANK MANUFACTURER.

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