# SDR TWAA0006431

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 2000
- Submitted: April 26, 2000
- Operation: Air carrier
- Aircraft: [N921L](https://openairdocs.org/aircraft/N921L), registered now
- Make and model: Doug DC-9-32
- Registry model: [Doug DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (OpenAirDocs)
- Aircraft serial: 47107
- Aircraft time: 80,344 hours, 86,616 cycles
- System (JASC): [5730 · Wing, Plate/Skin](https://openairdocs.org/jasc/5730)
- Part: Panel
- Condition: Cracked
- Location: Rt Wing
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TWAA0006431

## Discrepancy

DURING OP 16 MAINT CHECK, FOUND CRACK INDICATION FROM THIRD BOLT HOLE, RT UPPER TRAP PANEL FLANGE OF WING CENTER SECTION.  ACCOMP NDT PER PART 6-51-00-03.  CUT OFF FLANGE PER SRM 57-09 FIG 6, TO FOURTH BOLT HOLE.  ALODINE AND PRIME PER SRM 57-09 FIG 6 NOTE F.

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