# SDR DHL2001727573

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 21, 2001
- Submitted: September 16, 2001
- Operation: Air carrier
- Aircraft: [N727DH](https://openairdocs.org/aircraft/N727DH), registered now
- Make and model: Boeing 727-200
- Registry model: [Boeing 727-200](https://openairdocs.org/model/boeing-727-200) (OpenAirDocs)
- System (JASC): [4910 · APU Cowling/Containment](https://openairdocs.org/jasc/4910)
- Part: Apu
- Part number: 38067811
- Condition: Cracked
- Location: Apu Bay
- Stage of operation: IN
- How discovered: B
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DHL2001727573

## Discrepancy

ON C-CHECK, APU BORESCOPE INSPECTION REVEAL VISIBLE CRACK AT CONTAINMENT RINGS.  ALSO CONVERGING MULTIPLES CRACKS FROM INTERIOR.  REMOVED AND REPLACED APU ASSY ACCOMPLISHED ON NR 6856 PER B-727 MM 49-11-00.

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