# SDR SWAA2021071981835

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 9, 2021
- Submitted: July 19, 2021
- Operation: Air carrier
- Aircraft: [N489WN](https://openairdocs.org/aircraft/N489WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33855
- Aircraft time: 54,253 hours, 32,244 cycles
- System (JASC): [5340 · Fuselage Main, Attach Fittings](https://openairdocs.org/jasc/5340)
- Part: Stringer Clip
- Condition: Corroded
- Location: Bs 947 S19r
- 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/SWAA2021071981835

## Discrepancy

***CORROSION*** ON STRINGER CLIP AT AREA AFT OF ACB BS947 S-19R WL193. ; / [01] PART HAS NO ALLOWABLE DAMAGE LIMIT ON SRM; REPAIR BY REPLACEMENT PER SRM 51-10-02 STEP 9.C<BR><BR>REMOVED STRINGER CLIP BS 951; STR 19R PER SRM 51-40-02; [02] VERIFIED PART HAS NO ALLOWABLE DAMAGE LIMIT ON SRM; REPAIR BY REPLACEMENT PER SRM 51-10-02 STEP 9.C.; [03] LOCATED; DRILLED; TRIMMED; DEBURRED; CONVERSION COATED AND PRIMERED BS 951 STR19R STRINGER CLIP. MADE FROM EXTRUSION BAC1493-881 7075-T62 CLAD; LOT # 1461708-1 IAW SRM 51-40-05 AND DWG 147A8124; [04] VERIFIED STEP 3 COMPLETE; [05] OK TO INSTALL STRINGER CLIP; [06] OK TO INSTALL; [07] INSTALLED ACB STRINGER CLIP AT BS947 STR19-R; WL193 PER SRM 51-40-020G-0 AND DWG 147A8110; [08] VERIFIED INSTALLED ACB STRINGER CLIP AT BS947 STR19-R; WL193 PER SRM 51-40-020G-0 AND DWG 147A8110; [09] COMPLETED

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