# SDR SWAA2023050318382

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2023
- Submitted: May 3, 2023
- Operation: Air carrier
- Aircraft: [N436WN](https://openairdocs.org/aircraft/N436WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32456
- Aircraft time: 66,420 hours, 39,287 cycles
- System (JASC): [5720 · Wing Miscellaneous Structure](https://openairdocs.org/jasc/5720)
- Part: Web
- Condition: Corroded
- Location: Zn 600 Right Win
- 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/SWAA2023050318382

## Discrepancy

CORROSION FUEL BOOST PUMP WEB LOCATED IFSS115 AND WS108 AT RT WING 2023-208279<[01] TOOL USED EDDY CURRENT EQUIPMENT P/N NORTEC 600D; S/N 60009161631 DUE DATE 31/JAN/24;[02] ULTRASONIC THICKNESS GAGE P/N:45MG; S/N: 130066701; DUE DATE: 08-APR-23.;[03] EVALUATED REWORKED FUEL BOOST PUMP WEB LOCATED IFSS115 AND WS108 AT RT WING AND FOUND WITHIN LIMITS IAW B737-700 SRM 57-20-10-1A-3. ALLOWABLE DAMAGE 3. PARAGRAPH 2(B)(1). FIG. 102; MRT IS = 0.386?; HFEC INSPECTION DONE ON REWORKED CRACK INDICATION NOT FOUND. SEE INDIVIDUAL SIGNOFFS BELOW.;[04] CORRECTIVE ACTON STEP 3 CERTIFIED RII

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