# SDR 99ZZZX2826

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N578US
- Make and model: Boeing 737301
- Aircraft serial: 23257
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Condition: Cracked
- Location: Bs 178
- Part time: 45,319 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/99ZZZX2826

## Discrepancy

DEN - DURING C-CHECK INSPECTION, REPORTED 1 INCH CRACK IN FLOOR INTERCOSTAL WEB, BS 178, WL 207, RBL 19.0.  MAINTENANCE FABRICATED DOUBLER AND REPAIRED PER SRM 51-70-13 AND SRM 53-10-08.  (X)

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