# SDR SWAA2023070355785

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 4, 2023
- Submitted: July 3, 2023
- Operation: Air carrier
- Aircraft: [N295WN](https://openairdocs.org/aircraft/N295WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32541
- Aircraft time: 51,370 hours, 30,880 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Strap
- Part number: UNKNOWN
- Condition: Corroded
- Location: Zn 200 Fus Top
- 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/SWAA2023070355785

## Discrepancy

CORROSION ON STRAP AT MID CABIN BS713 RBL66 WL203.<[01] REMOVED CORROSION ON MID CABIN AT BS 713 RBL 65; WL 203; IN<BR> AN AREA OF 0.5'X1.2'AND 0.5'X1'IAW SRM 51-10-02-0G-0;[02] UPDATED STEP 1;[03] INSPECTED AND VERIFIED CORRECTIVE ACTION 1.;[04] COMPLETED STEPS 2-4.;[05] REINSPECTED BLENDED AREA IAW 737 NDTM PART 4 51-00-00 PROCEDURE 2.<BR>REMAINING MATERIAL THICKNESS IS 0.069' ADJACENT TO 0.071'. <BR>EQUIP USED: <BR>-EPOCH 650 ID: ATS2342 CAL DUE: 07/23;[06] COMPLETED MEASUREMENT TABLE. STRAP AT MID CABIN BS 713; RBL 66; WL 203 HAS NO ALLOWABLE DAMAGE ENTRY; THEREFORE; DAMAGE FOUND TO BE OUT OF LIMITS PER SRM 51-10-02-0G-0.;[07] COMPLETED STEP 1.;[08] VERIFIED CORRECTIVE ACTION 5 AND STEP 1.;[09] CORRECTIVE ACTION 8 SHOULD READ VERIFIED CORRECTIVE ACTION 6.;[10] REPAIRED DAMAGE ON STRAP AT MID CABIN BS 713; RBL 66; WL 203 PER EA 23-153-01843.;[11] VERIFIED CORRECTIVE ACTION 10 AND MEASUREMENT TABLE.

---
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.