# SDR FDEA202109272410

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 27, 2021
- Submitted: October 6, 2021
- Operation: Air carrier
- Aircraft: [N521FE](https://openairdocs.org/aircraft/N521FE), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48478
- Aircraft time: 84,111 hours, 15,761 cycles
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar Cap
- Part number: ARB74131
- Condition: Corroded
- Location: Lt Wing
- 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/FDEA202109272410

## Discrepancy

LEFT HAND WING REAR SPAR CAP AFT FLANGE FOUND CORROSION AT BETWEEN STATION   XORS 684 - 700. LEFT HAND WING REAR SPAR UPPER CAP , AFT FLANGE UPPER SURFACE BETWEEN STATION   XORS 684 - 700 CORROSION REMOVED AND FOUND EXCEED LIMIT AS PER SRM 57-00-10-  01A ALLOWABLE DAMAGE 1 . FIGURE 101 . REPAIR CARRIED OUT AS PER E.A # 1-5710-  T0364313 PART 1 . TITLE : WING - BASIC WING STRUCTURE - CORROSION BLENDOUTS , LEFT   HAND OUTER WING UPPER REAR SPAR CAP AFT FLANGE , XORS 670 TO 1040 . REPAIR   CLASSIFIED AS MINOR PER GMM 6-2-100.

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