# SDR EIAA9503

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 14, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N933F
- Make and model: Doug DC-9-33F
- Registry model: [Doug DC-9-33F](https://openairdocs.org/model/mcdonnell-douglas-dc-9-33f) (OpenAirDocs)
- Aircraft serial: 47191
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar Cap
- Part number: 5911300502
- Condition: Corroded
- Location: Ws 133-137
- Part time: 48,543 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/EIAA9503

## Discrepancy

DURING C-CHECK INSPECTION, FOUND CORROSION ON RIGHT UPPER REAR SPAR CAP AFT FLANGE XRS -133 TO -137.  CORROSION BLENDOUT EXCEEDED DC9 SRM LIMITS.  THE BLENDED AREA WAS TEMPORARILY REPAIRED USING 7075-T6 DOUBLERS, ANGLES AND FILLERS INSTALLED WET WITH SEALANT.  REPETITIVE INSPECTION IS REQUIRED ON REPAIR AREA AT 120 FLIGHT HOUR INTERVALS.  REPLACEMENT OF SPAR CAP TERMINATES REPAIR AT 2000 FLIGHT HOURS OF 2 YEARS AFTER COMPLETION OF REPAIR.  ACCOMPLISHED IAW EVERGREEN INTERNATIONAL AIRLINES, ENGINEERING CHANGE/REPAIR AUTHORIZATION NR 933-57-028-2.  (M)

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