# SDR SWAA2021071681790

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 9, 2021
- Submitted: July 16, 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): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Condition: Corroded
- Location: Fuselage
- 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/SWAA2021071681790

## Discrepancy

***CORROSION*** ON FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS887 LBL6 - RBL18 WL168. ; / [01] CORROSION ON FLOOR TO SIDEWALL TEE SUPPORT ACB BS 887; LBL 6-RBL 18; WL 186 FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS GIVEN IN SRM.; [02] REMOVED FLOOR TO SIDEWALL TEE SUPPORT BS 887; LBL 10-RBL21; WL 168 IAW SRM 51-40-02-0G-0.; [03] VERIFIED STEPS 1 AND 2; [04] LOCATED; DRILLED; AND DEBURRED NEW FLOOR TO SIDEWALL TEE SUPPORT ACB BS 887; LBL10-RBL21; WL 168 IAW SRM 51-40-05-0G-0; AIPC 53-42-11-30. OK TO INSTALL TEE.; [05] VERIFIED LOCATED; DRILLED; AND DEBURRED NEW FLOOR TO SIDEWALL TEE SUPPORT ACB BS 887; LBL10-RBL21; WL 168 IAW SRM 51-40-05-0G-0; AIPC 53-42-11-30. GAVE OK TO INSTALL TEE.; [06] INSTALLED NEW FLOOR TO SIDEWALL TEE SUPPORT ACB BS 887; LBL10-RBL21; WL 168 IAW SRM 51-40-02-0G-0; AIPC 53-42-11-30. SCREW GUN ID#NCX001167; SN: UNKNOWN; CAL DATE: 02/2022.; [07] RII FUNCTION VERIFIED INSTALLED NEW FLOOR TO SIDEWALL TEE SUPPORT ACB BS 887; LBL10-RBL21; WL 168 IAW SRM 51-40-02-0G-0; AIPC 53-42-11-30.; [08] VERIFIED INSTALLED NEW FLOOR TO SIDEWALL TEE SUPPORT ACB BS 887; LBL10-RBL21; WL 168 IAW SRM 51-40-02-0G-0; AIPC 53-42-11-30

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