# SDR 20010207SG007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2000
- Submitted: February 7, 2001
- Operation: Air carrier
- Aircraft: [N523AT](https://openairdocs.org/aircraft/N523AT), registered now
- Make and model: Boeing 757-23N
- Registry model: [Boeing 757-23N](https://openairdocs.org/model/boeing-757-23n) (OpenAirDocs)
- Aircraft serial: 30232
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Duct
- Part number: 28842382
- Condition: Cracked
- Location: Apu
- 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/20010207SG007

## Discrepancy

WHILE SERVICING APU FOUND A HOLE ABOUT 2 INCHES IN DIAMETER AND A CRACK ABOUT 3 INCHES LONG IN THE BLEED AIR TEE DUCT.  REPLACED THE TEE DUCT PER MM 49-53-01, OPERATIONAL CHECKED OK.  (M)

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