# SDR FDEA201108253477

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 25, 2011
- Submitted: August 25, 2011
- Operation: Air carrier
- Aircraft: [N643FE](https://openairdocs.org/aircraft/N643FE), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48486
- Aircraft time: 48,609 hours, 9,839 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Longeron
- Part number: AEA7479501
- Condition: Corroded
- Location: Zone 200
- 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/FDEA201108253477

## Discrepancy

CORROSION ON LONGERON 12R AT BS 1239-1299.  CORROSION REMOVED IAW SRM 51-21-01, REV 47.  ORIGINAL THICKNESS = 0.173 INCH; MATERIAL REMOVED = 0.055 IN; MATERIAL REMAINED = 0.118 IN AND FOUND EXCEEDED LIMITS SRM 53-22-00, REV 47, FIG 205.  LONGERON SECTION REMOVED IAW SRM 51-31-01, REV 47.  REPAIR AND SPLICE FABRICATED DWG AEA7479, AND SRM 53-00-05, REV 47, FIG 202, REPAIR 1.  REPAIR AND SPLICE INSTALLED SRM 51-31-01, REV 47 AND SRM 53-00-05 REV 47, FIGURE 202, REPAIR 1.  REPAIR CLASSIFIED AS MAJOR IAW GMM 6-2-100 REV 112.

---
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.