# SDR CKSA98605

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N712CK](https://openairdocs.org/aircraft/N712CK), registered now
- Make and model: Boeing 747-2B4B
- Registry model: [Boeing 747-2B4B](https://openairdocs.org/model/boeing-747-2b4b) (OpenAirDocs)
- Aircraft serial: 21098
- System (JASC): [5400 · Nacelle/Pylon Structure](https://openairdocs.org/jasc/5400)
- Part: Stiffener
- Part number: 65B903772
- Condition: Corroded
- Location: Nr 1 Pylon
- 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/CKSA98605

## Discrepancy

NR 2 STIFFENER IN RT NR 1 PYLON HAS NUMEROUS AREAS OF CORROSION.  NDT VERIFIED OUT OF LIMITS.  REPAIRED IAW ASA CKF-PYL-017, CKF-PYL-029 & CKF-PYL-031 INCL ALL SUPP SHEETS.  FOUND DURING ACCOMPLISHMENT OF C D AND CPCP AT BOEING WICHITA (KIAB).  WORK ORDER NUMBER MO280, ASA TASK CARD NUMBER CKF-PYL-003.

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