# SDR CALA2023012700226

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 2023
- Submitted: January 27, 2023
- Operation: Air carrier
- Aircraft: [N63890](https://openairdocs.org/aircraft/N63890), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 42194
- Aircraft time: 23,407 hours, 8,460 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Torque Box
- Part number: 148A8636
- Condition: Punctured
- Location: Bs 1102
- 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/CALA2023012700226

## Discrepancy

TORQUE BOX BEAM WEB PUNCTURED AR BS 1102 LBL 9 .  VERIFIED CUTOUT OUTBOARD OF LBL 11.   NDT PERFORMED A OPEN HOLE HIGH FREQUENCY EDDY CURRENT.  REMOVED LT ACCESS IN APU BAY FOR ACCESS - TORQUE CUT OUT DMG JUST OTBD LBL 11 ANGLE IAW 51-70-13-2R-1 STEP 4.  PERFORMED HFEC OF CUTOUT AND EXISTING FASTENERS.  ACCOMPLISHED SRM 51-70-13-2R-1 STEPS 4B UP TO AND INCLUDING 4I VERYFIED REPAIR DOUBLERS IAW SRM 51-70-13-2R-1 STEPS 4B UP TO CUTOUT BOX WEB IAW SRM 51-0-02 A. NDT 51-00-00 23 & 16 NO DEFECTS NOTED.   REPLACEMENT ANGLE IAW SRM 51-70-13-2R-1.  INSTALLED REPAIR DOUBLER AND SHIMS IAW SRM 51-70-13-2R-1 REPAIR 1. ACCESS PANEL INSTALLED REPAIR DOUBLER AND SHIMS IAW SRM 51-70-13-2R-1.

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