# SDR UPS08M53521

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2008
- Submitted: October 15, 2008
- Operation: Air carrier
- Aircraft: N296UP
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48474
- System (JASC): [5531 · Vertical Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5531)
- Part: Spar
- Condition: Corroded
- Location: Vertical Stab
- 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/UPS08M53521

## Discrepancy

INSPECTION TYPE:N/A VERTICAL STABILIZER FRONT SPAR RT AT STA ZFS 353.295 FOUND SURFACE CORROSION.  SURFACE CORROSION ON VERTICAL STABILIZER FRONT SPAR RT AT STA ZFS 353.295 REMOVED AS PER SRM 51-21-01 VOL II REV 35.  REWORKED AREA MATERIAL ORIGINAL THICKNESS 0.190", MATERIAL REMOVED 0.012", REMAINED THICKNESS 0.178".  FOUND WITHIN LIMIT AS PER SRM 55-00-01 FIG 1A VOL I REV 35.

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