# SDR CALA2019110101868

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 29, 2019
- Submitted: November 3, 2019
- Operation: Air carrier
- Aircraft: [N73283](https://openairdocs.org/aircraft/N73283), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31606
- Aircraft time: 52,491 hours, 18,630 cycles
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Part number: 182A40011
- Condition: Cracked
- Location: Lt Horiz Stab
- 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/CALA2019110101868

## Discrepancy

EA 5510-01843 REV H; FOUND ON LEFT SIDE HORIZONTAL STAB, LOWER S KIN, AT STAB STA 129.5 MEASSURED FROM THE AFT SPAR GOING FORWARD 10 INCHES. THE CRACK MEASURES 3/4 INCH IN LENGTH. MARKED. REF F LEET CYCLE NON ROUTINE 9700271. COMMON DOUBLER INSTALLED ON L/H HORIZ STAB INSPAR LOWER SKIN BETWEEN STA''S 120.30 AND 129.50 IAW SRM 55-10-01 REP 11 INSP THRESHOLD AT 56,000 TOT FLT CYC''S FOLLOWED BY REPEAT INTERVALS AT EACH 9,000 FLT CYC''S PER STEP 5.A. TABLE 204 REF F/C N/R''S 9700271 AND 9700494 COMMON DOUBLER INSTALLED ON L/H HORIZ STAB INSPAR LOWER SKIN BETWEEN STA''S 120.30 AND 129.50 IAW SRM 55-10-01 REP 11 INSP THRESHOLD AT 56,000 TOT FLT CYC''S FOLLOWED BY REPEAT LFEC AT INTERVALS AT 9,000 FLT CYCLES PER STEP 5.A. TOMC-APPROVAL FROM SC1ELBYC COMMENT REPAIR IS COMPLETE AND DIP ISSUED. QC REVIEW QC REVIEW RECORDS UPDATE INIT: 56,000 TAFC WILL ITO TO RIR (-2536) RIR: LFEC 9,000.............LT/U224600

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