# SDR SWAA2024041563804

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 15, 2024
- Submitted: April 15, 2024
- Operation: Air carrier
- Aircraft: [N245WN](https://openairdocs.org/aircraft/N245WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32506
- Aircraft time: 59,266 hours, 35,668 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Shear Web
- Part number: UNKNOWN
- Condition: Corroded
- Location: Bs 1016 Lbl40
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2024041563804

## Discrepancy

CORROSION ON SHEAR WEB AFT WET AREA STA-1016 LBL-40 APPROX. WL 208<[01] UPON FURTHER INVESTIGATION FOUND PRIMER CHIPPED AND RIVETS DAMAGED AT BS 1006+3 AND 1006+4 AND 1016. CLEANED AREA AROUND THE FASTENERS AT BS 1006+3 AND 1006+4 AND WEB AT BS 1006 PER SRM 51-10-02-0G-0 AND 51-40-02-0G-0 AND BOEING DWG 1475600.;[02] REMOVED PRIMER FOR INVESTIGATION CORROSION; FOUND CORROSION INDICATION TO BE DEBRY AND PRIMER ONLY. WHILE INVESTIGATING AREA FOUND 2(EA) HEAD FASTENERS DAMAGED AT BS 1006+3 AND 1006+4 PER SRM 51-10-02.;[03] VERIFIED CORRECTIVE ACTION #2;[04] APPLIED CHEMICAL CONVERSION COATING AT BS 1016 LBL 40 PER SOPM 20-43-03; PRIMER BMS 10-11 PER SOPM 20-41-02 AND REPLACED FASTENERS AT BS 1006+3 AND 1006+4 PER SRM 51-40-02-0G-0 AND BOEING DWG 147A5600.;[05] VERIFIED ALL STEPS AND CORRECTIVE ACTION ITEMS; CARD COMPLETE.

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