# SDR QXEA2009030300158

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2009
- Submitted: March 3, 2009
- Operation: Air carrier
- Aircraft: N423QX
- Make and model: Bombdr DHC8402
- Aircraft serial: 4153
- Aircraft time: 4,940 hours, 5,081 cycles
- System (JASC): [5730 · Wing, Plate/Skin](https://openairdocs.org/jasc/5730)
- Part: Panel
- Condition: Corroded
- Location: Center Wing
- 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/QXEA2009030300158

## Discrepancy

PDX -C1- CENTER WING AFT PANELS 262AT, 262HT, 262FT MATING SURFACE ON FWD SIDE HAS FRETTING CORROSION.  HFEC INSPECTED BLENDS FOR CRACKS IAW Q400 NDT6M PART 6, 51-00-000-250-801 AND STEP 3 GENERAL NOTES OF RD 8/4-53-521.  NO CRACKS NOTED.  PERFORMED REPAIR ON PANELS IAW RD 8/4-53-521 STEPS 1,2,4-8.  THE REMAINING THICKNESS OF THE MATERIAL IS .1 INCH.  PANEL FOUND TO BE WITHIN LIMITS REF RD 8/4-53-521, PG 2 AND NOTE 2 ON PAGE 4.  VERIFIED CAMLOCK GRIP LENGTH, LANDING STRIP FOUND TO BE GREATER THAN .090 INCH STANDARD CAMLOCK STUD GRIP LENGTH IS ACCEPTABLE IAW RD 8/4-53-521 GENERAL NOTES 9 AND 10.  INSTALLED TEFLON TAPE IN LIEU OF WET SEALANT IAW RD 8/4-53-451 GENERAL NOTES 7.

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