# SDR CALA2026072818066

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2026
- Submitted: July 29, 2026
- Operation: Air carrier
- Aircraft: [N54711](https://openairdocs.org/aircraft/N54711), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28782
- Aircraft time: 85,102 hours, 31,458 cycles
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Part number: 182A4001
- Condition: Cracked
- Location: Zone 300
- 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/CALA2026072818066

## Discrepancy

RH HORIZONTAL STAB LOWER SKIN, ONE CRACK SIGNAL NOTED AT STA101.90 I/B SIDE LOCATED TO 10 INCH FWD FROM AFT SPAR. CRACK LENGTH 0.500 INCH. (REF AAR NR 1000086411). REPAIRED HORIZONTAL STABILIZER LOWER SKIN AT RH SIDE STA101.90 IAW B737-700 SRM 55-10-01-2R -11, THIS REPAIR IS A CATEGORY B, REPAIR REQUIRE REPETITIVE INSPECTIONS, IAW SRM 55-10-01-2R-11 STEP(5) INSPECTION REQUIREMENTS TABLE 204. REPAIRED HORIZONTAL STABILIZER LOWER SKIN AT RH SIDE STA101.90 I AW  SRM 55-10-01-2R -11, THIS REPAIR IS A CATEGORY B, RE PAIR REQUIRE REPETITIVE INSPECTIONS, IAW SRM 55-10-01-2R-11 STEP (5) INSPECTION REQUIREMENTS TABLE 204. ESFR NO.3965.

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