# SDR SWAA2022050996553

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2022
- Submitted: May 9, 2022
- Operation: Air carrier
- Aircraft: [N927WN](https://openairdocs.org/aircraft/N927WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36889
- Aircraft time: 45,530 hours, 27,478 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Condition: Corroded
- Location: Fwd Cargo
- 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/SWAA2022050996553

## Discrepancy

CORROSION ON FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT AT LBL 24 BS 460+6; BS 460+10. / [01] VERIFIED SRM 53-00-53-1A-2 IS APPLICABLE FOR THIS REPAIR. <BR><BR>REMOVED CORROSION AT TWO LOCATIONS ON FCB FLOOR TO SIDEWALL SUPPORT PER SRM 51-10-02-0G-0. 1ST LOCATION: LBL 24; BS 460+6 MEASURES L=0.600; W=0.450; Y=0.011. 2ND LOCATION: LBL 24; BS 460+10 MEASURES L=0.700; W=0.450; Y=O.018. ORIGINAL PART THICKNESS PER SRM 53-30-53-01-2 IS 0.040' WITH MAX REMOVAL OF DAMAGE AT 10% OF PART THICKNESS THEREFORE BOTH MEASUREMENTS/LOCATIONS ARE OUT OF LIMITS PER SRM 53-00-53-1A-2 STEPS 2. D. (1); 4. A. (2) (A) DETAIL D.<BR><BR>TOOL USED: DIAL DEPTH GAGE<BR>ID:ATS2678<BR>SN:UNKNOWN<BR>DATE:04/2022<BR>DUE:04/2023;[02] VERIFIED APPLICABILITY OF SRM 53-00-53-1A-2. VERIFIED DAMAGE IS OUT OF LIMITS AS NOTED IN CORRECTIVE ACTION ITEM 1.;[03] UPDATED MEASUREMENTS;[04] UPDATED PART NUMBER;[05] NEW FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT (PN: 143A7501-183) AT LBL 24 BS 460+6 - 460+10 WAS RECEIVED NEW; LOCATED AND DRILLED; AND WILL BE INSTALLED ON CUSTOMER CARD TTG8Q00BZS3P AND TTG8Q004FTYD;[06] UPDATED MEASUREMENTS;[07] NEW FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT (PN: 143A7501-183) AT LBL 24 BS 460+6 - 460+10 WAS RECEIVED NEW ON CUSTOMER CARD: TTG8Q00BZS3P. PART WILL BE WORKED/INSTALLED ON CUSTOMER CARD TTG8Q00BZS3P AND TTG8Q004FTYD;[08] VERIFIED ITEMS 4;6;7. CORRECTIVE ACTIONS.

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