# SDR 9618636309

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N669US
- Make and model: Boeing 747451
- Aircraft serial: 24224
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floor Beam
- Condition: Corroded
- Location: Bs 460-480
- 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/9618636309

## Discrepancy

DURING P-CHECK, FOUND CORROSION ON THE FLOOR BEAM UPPER CHORDS BS 460 FROM RBL 39 - 61 AND BS 480 FROM RBL 64 - 75.  REPAIRED CHORDS PER EA 63-106559.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.