# SDR SWAA2022082332989

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2022
- Submitted: August 23, 2022
- Operation: Air carrier
- Aircraft: N490WN
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32476
- Aircraft time: 59,880 hours, 35,571 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Part number: 146A81215
- Condition: Corroded
- Location: Aft Cargo Bay
- 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/SWAA2022082332989

## Discrepancy

CORROSION ON WEB AT AFT CARGO BAY BS807+4 RBL20. / [01] CORRECTED STEPS 1 & 2.;[02] REMOVED CORROSION ON WEB AT AFT CARGO BAY BS 807+4 RBL 20 IAW SRM 51-10-02 MEASURES: L=1' W=1' <BR><BR> REQUIRES NDT FOR REMAINING THICKNESS;[03] UT INSPECTED BLENDED AREA IAW 737 NDTM PART 4 51-00-00 PROCEDURE 2.  REMAINING MATERIAL THICKNESS IS 0.052' ADJACENT TO 0.056'. <BR>EQUIP USED: -EPOCH 650 ID: ATS2031 CAL DUE: 03/23;[04] EVALUATE DAMAGE: ORIGINAL THICKNESS IS 0.056' PER SRM 53-60-15-01-1 IDENTIFICATION; MAX MAT LOSS AREA IS L= 1' W= 1' XD= .007' REMAINING THICKNESS= 0.049' FOUND TO BE OUT LIMITS; REWORKED AREAS IAW SRM 53-60-15-1A-1 ALLOWABLE DAMAGE;[05] THIS TARJET ACCOMPLISH WITH CARD TTG8Q00DR65P;[06] CORRECTED; THIS FAULT WILL BE ACCOMPLISHED ON CARD TTG8Q00DR65P;[07] VERIFIED STEPS 1 AND 2; CORRECTIVE ACTION 6 AND VERIFIED MEASUREMENT TABLE.

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