# SDR SWAA2022041883780

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 14, 2022
- Submitted: April 18, 2022
- Operation: Air carrier
- Aircraft: [N7877H](https://openairdocs.org/aircraft/N7877H), registered now
- Make and model: Boeing 737-7Q8
- Registry model: [Boeing 737-7Q8](https://openairdocs.org/model/boeing-737-7q8) (OpenAirDocs)
- Aircraft serial: 29359
- Aircraft time: 50,381 hours, 27,028 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Corroded
- Location: Fwd 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/SWAA2022041883780

## Discrepancy

CORROSION ON PASSENGER CABIN MOP SILL AT LBL 60 BS 312+11; BS 312+15; BS 328+14; BS 344+5. / [01] REMOVED CORROSION ON PASSENGER CABIN MOP SILL AT LBL 60 BS312+15'' IAW SRM 51-10-02-0G-0 AND EVALUATED BLENDED AREA AND FOUND TO BE OUT OF LIMITS IAW SRM 53-10-15-1A-1 PART 4.C(2) DETAIL D; MEASURES L=2.5'' X W=2.0'' X D=0.03'' ORIGINAL THICKNESS=0.090'' TOOL USED CALIPER ID:IS000887 S/N:05946723 DUE:08/2022;[02] VERIFIED PARTIAL UPDATE STEPS 1-4.;[03] REMOVED PASSENGER CABIN MOP SILL AT LBL 60 BS312+15'' IAW SRM 51-40-02-0G-0.;[04] UPDATED STEP 5;[05] LOCATED AND DRILLED NEW CABIN MOP SILL AT LBL 60 BS 270-BS 360 I.A.W SRM 51-40-05-0G-0 AND DWG 141A8110.;[06] VERIFIED CORRECTIVE ACTIONS STEP 3;5.;[07] OK TO INSTALL;[08] OK TO INSTALL.;[09] INSTALLED PASSENGER CABIN MOP SILL AT LBL 60 IAW SRM 51-40-02-0G-0 AND DRAWING#141A8110; 140A9810 AND 141A8141.;[10] VERIFIED CORRECTIVE ACTION #9;[11] COMPLETED STEP 5

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.