# SDR SWAA2021091003381

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 3, 2021
- Submitted: September 10, 2021
- Operation: Air carrier
- Aircraft: N754SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29849
- Aircraft time: 74,935 hours, 44,224 cycles
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar
- Condition: Corroded
- Location: Lt Wing
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021091003381

## Discrepancy

CORROSION FRONT SPAR WEB LOCATED FUEL BOOST PUMP IFSS 120 APPROX AT LT WING ; 2021-368354 / [01] TOOL USED/ EDDY CURRENT PN/ NORTEC 600D; SN/ 2000053402; DUE DATE/ 23APR22.; [02] TOOL USED: ULTRASONIC THICKNESS GAUGE ; PN/ 25DL PLUS;SN/ 071504410; DUE DATE/ 20NOV21; [03] TOOL USED CALIPER P/N :500-464 S/N : 15331936 DUE DATE : 05-OCT-21; [04] TOOL USED : CALIPER P/N:700-113-10 S/N:0016656 DUE DATE: 11-MAY-22; [05] TOOL USED: EDDY CURRENT INSTRUMENT P/N: NORTEC 500D; S/N: N500X1693P030456 DUE DATE: 30-NOV-21.; [06] REPAIRED FRONT SPAR WEB LOCATED FUEL BOOST PUMP IFSS 120 APPROX AT LT WING IAW EA 21-157-02490; [07] TASK CARD COMPLETED <BR>RII

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