# SDR UPS08M51513

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 21, 2007
- Submitted: January 23, 2008
- Operation: Air carrier
- Aircraft: [N291UP](https://openairdocs.org/aircraft/N291UP), registered now
- Make and model: Doug MD-11
- Registry model: [Doug MD-11](https://openairdocs.org/model/mcdonnell-douglas-md-11) (OpenAirDocs)
- Aircraft serial: 48477
- Aircraft time: 45,846 hours, 5,703 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Structure
- Condition: Corroded
- Location: Horizontal 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/UPS08M51513

## Discrepancy

INSPECTION TYPE:C LT HORIZ STAB NR 6 BARREL NUT HOLE FOUND CORROSIONS.  CORROSION AT B-NUT BORE REMOVED.  BORE BOTTOM REMAINING BLEND OUT 0.035" DEEP.  BORE REAM TO 0.988" DIA REMAIN BLEND OUT DEPTH 0.030" DEEP FOUND EXCEED LMT PER EO MD11-5510-19409-L. 10X MAG INSP C/O AND FOUND NO CORROSION EVDT.  REPAIR SLEEVE BUSHING FAB, PROTECTED AND INSTALLED.  C/O FR PRIMER TOUCH UP AT BORE REPAIR AREA.  REPAIR C/O IS ACCEPTABLE PER EN 1731-07.

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