# SDR 99ZZZX2323

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N519AT
- Make and model: Boeing 757-23N
- Registry model: [Boeing 757-23N](https://openairdocs.org/model/boeing-757-23n) (OpenAirDocs)
- Aircraft serial: 27975
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Duct
- Condition: Cracked
- Location: Apu
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX2323

## Discrepancy

DURING PRE-FLIGHT, FOUND THE APU TEE DUCT FORWARD OF SURGE VALVE CRACKED.  REPLACED TEE DUCT, REPAIRED THREAD INSERTS, OPS CHECKED NORMAL, NO LEAKS NOTED.

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