# SDR FDEA200906222220

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 22, 2009
- Submitted: June 23, 2009
- Operation: Air carrier
- Aircraft: [N933FD](https://openairdocs.org/aircraft/N933FD), registered now
- Make and model: Boeing 757-21B
- Registry model: [Boeing 757-21B](https://openairdocs.org/model/boeing-757-21b) (OpenAirDocs)
- Aircraft serial: 24330
- Aircraft time: 52,447 hours, 30,243 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Part number: 143N534516
- Condition: Corroded
- Location: Zone 100
- 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/FDEA200906222220

## Discrepancy

BS 800 TO 820, RBL 8 INTERCOSTAL CORRODED.  AREA EVALUATED FOUND INTERCOSTAL WEB, LWR CHORD AND CLIP CORRODED.  BS 800 TO BS 820, RBL 8 INTERCOSTAL WEB CORROSION REMOVED AND TREATED IAW SRM 51-10-02 AND 51-20-01 REV 97. ORIGINAL THICKNESS 0.040 INCH, MATERIAL REMOVED 0.003 INCH, MATERIAL REMAINED 0.037 INCH FOUND WITHIN LIMIT IAW SRM 53-00-04 FIG 101, REV 97  LWR CHORD P/N 143N5345-16 AND CLIP PN 143N5354-72 FABRICATED IAW DWG 143N5345 SHT 1 REV C AND 143N4354 SHT 10 REV.  PART MARKED AS FX 143N5345-16 AND FX 143N5354-72 IAW GMM 7-0-1001 REV 107.  CORRODED LWR CHORD AND CLIP REMOVED AND REPLACED IAW SRM 51-40-02 REV 97.  THIS REPAIR IS CLASSIFIED AS MINOR AS IAW GMM 6-2-100 CRITERIA.

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