# SDR CALA9800083

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N17407](https://openairdocs.org/aircraft/N17407), registered now
- Make and model: Boeing 727243
- Aircraft serial: 21270
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Torus
- Part number: 38067811
- Condition: Cracked
- Location: Apu Compt
- Part time: 26,244 hours
- 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/CALA9800083

## Discrepancy

INSPECTION FOUND A 5 INCH CRACK IN INBOARD WELD SEAM OF APU TORUS ASSEMBLY.  THE APU WAS REMOVED AND REPLACED IAW MM 49-10-01.  LEAK AND OPERATIONAL CHECKS WERE GOOD.

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