# SDR UPS07M48949

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2006
- Submitted: January 24, 2007
- Operation: Air carrier
- Aircraft: [N286UP](https://openairdocs.org/aircraft/N286UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48453
- Aircraft time: 63,404 hours, 9,612 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Stiffener
- Condition: Cracked
- Location: Fuselage
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS07M48949

## Discrepancy

INSPECTION TYPE:C AFT FX COMPT FWD BULKHEAD APPROX AT RBL 10 FOUND VERTICAL STIFFENER TOP EDGE CRACKED.  CRACK STIFFENER PARTS & FASTENERS REMOVED PER SRM 53-00-01 FIG 8 VIR38 & 51-31-01VIIR38.  CRACK STIFFENER CUTOFF PER SRM 53-00-01 FIG 8VIR38.  HFEC C/O PER DACNDTSPMREV1206-10-01.001 NO CRACK.  REPAIR ANGLES FAB PER SRM 53 -00-01 FIG 8VIR38, HEAT TREAT PER DPS7.00-1 & HARDNESS VALUES HRB81.4 PER DPS1.05-3.  INSTL PER SRM 53-00-01 FIG 8VIR38 & 51-31-01VIIR38 EN1007-07.

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