# SDR SWAA2026083136129

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2026
- Submitted: September 1, 2026
- Operation: Air carrier
- Aircraft: [N8546V](https://openairdocs.org/aircraft/N8546V), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 63574
- Aircraft time: 29,792 hours, 15,138 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Condition: Cracked
- Location: Zone 100
- 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/SWAA2026083136129

## Discrepancy

LEFT STR 18A STA 727 INNER CHORD UPPER FASTENER HOLE STILL HAS A CRACK DEFECT INDICATIOIN IN UPPER FWD FASTENER HOLE PER HFEC HOLE PROBE INSP NDT PART 6, 51-00-00 PROCEDURE 16 USING A .020" NOTCH. PER 26-153-02116-WIP1 (AD - N8546V - L/H STR 18A STA 727 INNER CHORD UPPER FASTENER HOLE REPAIR) [TTG8Q01DKS0F] STEP 5. ACCOMPLISHED A HIGH FREQUENCY EDDY CURRENT (HFEC) HOLE PROBE INSPECTION OF ALL EXISTING FASTENER HOLES COMMON TO THE REPAIR AREA PER 737 NDT PART 6 51-00-00 PROCEDURE 16 USING A 0.020" NOTCH STANDARD. FOUND CRACK DEFECT INDICATION TO STILL BE PRESENT IN PREVIOUSLY DISCREPANT HOLE (UPPER FWD HOLE COMMON TO INNER CORD) AS DOCUMENTED ON TTG8Q01DJ8MU. INDICATION IS COMMON TO THE AFT UPPER FITTING (P/N 144A7321-5) PART TO FABRICATED BY DAF PER P.O. # P008G53J-1 PART FABRICATED BY VENDOR P008G53J-1 W/O # DASGV80238. WORK TO BE ACCOMPLISHED ON EA# 26-153-02116-WIP2 TTG8Q01DQ38A INSPECTED WORK PERFORMED

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