# SDR CALA2020102301212

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2020
- Submitted: October 23, 2020
- Operation: Air carrier
- Aircraft: [N76528](https://openairdocs.org/aircraft/N76528), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31663
- Aircraft time: 30,959 hours, 10,682 cycles
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Part number: 182A4001
- Condition: Cracked
- Location: Horizontal Stab
- 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/CALA2020102301212

## Discrepancy

RIGHT HORIZONTAL STABILIZER LOWER SKIN CRACK DETECTED AT STAB STA 138.70 APPROXIMATELY 18.5 INCH FROM THE REAR SPAR.  REPAIRED AS PER SRM 55-10-01 REPAIR 11 TABLE 201 AND 203 CATEGORY B REPAIR DIP REQUIRED, AS PER TABLE 204 INSPECTION REQUIREMENTS.  INSPECTION THRESHOLD OF 56,000 FC AND A DETAIL VISUAL INSPECTION AND EXTERNAL LOW FREQUENCY EDDY CURRENT AT INTERVALS OF 9,000 FC THEREAFTER REPAIRED, AS PER SRM 55-10-01 REPAIR 11 TABLE 201 AND 203 CATEGORY B REPAIR DIP REQUIRED, AS PER TABLE 204 INSPECTION REQUIREMENTS.  INSPECTION THRESHOLD OF 56,000 FC AND A DETAIL.  VISUAL INSPECTION AND EXTERNAL LOW FREQUENCY EDDY CURRENT AT INTERVALS OF 9,000 FC THEREAFTER.  TOMC-APPROVAL FROM SC1ELBYC COMMENT VERIFIED ALL WORK COMPLIED WITH IN FLEET CYCLE N/R 9757666 QC REVIEW RECORDS UPDATE-AP INIT: 56000 FC INIT WILL ITO TO RIR (-2696) RIR: 9000 FC AP U366012.

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