# SDR SWAA2023070757935

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2023
- Submitted: July 7, 2023
- Operation: Air carrier
- Aircraft: [N7827A](https://openairdocs.org/aircraft/N7827A), registered now
- Make and model: Boeing 737-79P
- Registry model: [Boeing 737-79P](https://openairdocs.org/model/boeing-737-79p) (OpenAirDocs)
- Aircraft serial: 28255
- Aircraft time: 57,742 hours, 36,958 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Stringer
- Part number: UNKNOWN
- Condition: Cracked
- Location: Zn 100 Fus Lower
- 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/SWAA2023070757935

## Discrepancy

CRACK ON STR28R LOCATED BTW BS312 TO BS328 AT EQUIPMENT ELECTRONIC COMP 2023-365685<[01] TOOL USED: ULTRASONIC THICKNESS GAGE; P/N: 45MG; S/N: 221860711; DUE DATE: 07 NOV 23.;[02] TOOLS USED: TEMPERATURE CONTROLLER: P/N P3015GOES00000; S/N 142811020; DUE DATE: 25-JAN-24; TEMPERATURE CONTROLLER: P/N P3015GOES00000; S/N 112811019; DUE DATE: 25-JAN-24.;[03] REPLACED STRINGER SECTION 28R AND FASTENERS LOCATED BTW STR 27R TO STR28R BTW BS294.5 TO BS 328 AT EQUIPMENT ELECTRONIC COMP IAW B737-700 SRM 53-10-03-01-1 AND SRM 51-10-02 STEP 9. SEE SEE INDIVIDUAL SING-OFFS BELOW;[04] TASK CARD COMPLETED <BR>REPLACED STRINGER SECTION 28R AND FASTENERS LOCATED BTW STR 27R TO STR28R BTW BS294.5 TO BS 328 AT EQUIPMENT ELECTRONIC COMP IAW B737-700 SRM 53-10-03-01-1 AND SRM 51-10-02 STEP 9. SEE SEE INDIVIDUAL SING-OFFS BELOW<BR>RII

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