# SDR 0401729604

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2004
- Submitted: September 28, 2004
- Operation: Air carrier
- Aircraft: N604NW
- Make and model: Doug DC-9-32
- Registry model: [Doug DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (OpenAirDocs)
- Aircraft serial: 47222
- Aircraft time: 74,056 hours, 66,298 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Condition: Cracked
- Location: Fuselage
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/0401729604

## Discrepancy

DURING H-CHECK FOUND CRACK IN VERTICAL STIFFENERS AT BS 756 BULKHEAD X=22 AND X=-22.  REPAIRED PER EA 96-199903.

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