# SDR 0100816637

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 2001
- Submitted: March 13, 2001
- Operation: Air carrier
- Aircraft: N637US
- Make and model: Boeing 747251B
- Aircraft serial: 23548
- Aircraft time: 58,029 hours, 7,654 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Condition: Corroded
- Location: Fuselage
- 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/0100816637

## Discrepancy

DURING M-CHECK, FOUND CORROSION ON INBOARD VERTICAL SURFACE OF STRINGER AT STATION 2203, STR 51 L.  REPAIRED PER EA 66-180581.

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