# SDR 0602696624

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 2006
- Submitted: December 13, 2006
- Operation: Air carrier
- Aircraft: [N624US](https://openairdocs.org/aircraft/N624US), registered now
- Make and model: Boeing 747251B
- Aircraft serial: 21706
- Aircraft time: 100,239 hours, 17,712 cycles
- System (JASC): [5710 · Wing Main, Frame Structure](https://openairdocs.org/jasc/5710)
- Part: Beam
- Condition: Corroded
- Location: Lt 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/0602696624

## Discrepancy

DURING "L" CHECK FOUND CORROSION ON THE LEFT WING TRAILING EDGE BEAM LOWER CHORD AT WBL 320.  ACCOMPLISHED TEMPORARY REPAIR PER SECTION I OF EA 66-207130.  PERMANENT REPAIR TO BE ACCOMPLISHED BY REPLACING LOWER CHORD PER SECTION II OF EA 66-207130 DURING NEXT "H" CHECK.

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