# SDR SWAA2022020363815

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2017
- Submitted: February 4, 2022
- Operation: Air carrier
- Aircraft: N557WN
- Make and model: Boeing 737790
- Aircraft serial: 30166
- Aircraft time: 55,212 hours, 25,579 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- 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/SWAA2022020363815

## Discrepancy

***CORROSION*** ACB; BS 727+4; BL0; WEB; CORRODED. / OUT OF LIMITS DUE TO CORROSION OVER MORE THAN 3 IN 10 FASTENERS PER SRM 53-00-53-1A-2 STEP 4C(B) FIG 103(E). FORMED; ALODINED; DRILLED AND PRIMED PER DWG. 146A3426-7 & SRM 51-40-05-0G-0. MADE OUT OF 7075-0- .032 CLAD LOT # 1285531 HEAT TREATED TO T62 ON P.O.# 64969T. PART TO BE INSTALLED ON SWA CARD NO. T704486.

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