# SDR UPS07M50753

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2007
- Submitted: September 28, 2007
- Operation: Air carrier
- Aircraft: [N289UP](https://openairdocs.org/aircraft/N289UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48455
- Aircraft time: 75,126 hours, 12,047 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: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS07M50753

## Discrepancy

INSPECTION TYPE:C HORIZONTAL STAB CONSTANT SECTION BARREL NUT BORE LEFT NR 5 FOUND WITH CORROSION.  CORROSION AT BARREL NUT BORE REMVD PER SRM 51-21-01 VII R38.  BOTTOM REMN BLEND OUT 0.025" DEEP.  BORE REAMED TO 0.988" DIA, REMN BLEND OUT 0.015" DEEP,  EXCEEDS LIMITS.  BARREL NUT BORE, BLEND OUT VOIDS, BOTTOM PERIPHERY RADIUS SMOOTHEN & PROTECTED.  SLEEVE BUSHING FAB, PROTECTED & INSTALLED.  REPAIR C/O AT BARREL NUT BORE 05 LEFT ACCEPTABLE PER EN 1496-07.

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