# SDR CALA2022011400128

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2022
- Submitted: January 14, 2022
- Operation: Air carrier
- Aircraft: [N75428](https://openairdocs.org/aircraft/N75428), registered now
- Make and model: Boeing 737900
- Aircraft serial: 31633
- Aircraft time: 41,921 hours, 14,606 cycles
- System (JASC): [5500 · Empennage Structure](https://openairdocs.org/jasc/5500)
- Part: Skin
- Part number: 182A4001
- Condition: Cracked
- Location: Rh Hor 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/CALA2022011400128

## Discrepancy

(SUPPORT TASK) FOUND C-SCAN INDICATION ON R/H HORZ STAB LOWER SU RFACE AT A LOCATION 18.5 INCHES FROM REAR SPAR AND 8.75 IN. FROM RIB 4 OF THE HORIZONTAL STABILIZER REPAIRED CRACK FOUND BY C-SCAN INDICATION ON R/H HORIZONTAL STAB TRANSCRIBED FROM PAPER DOC AERSALE WO 3497 NR 21028 WORK ACP BY ILIZER AT LOCATION 18.5" FROM REAR SPAR AND 8.75"FROM RIB 4 OF T MECH ALD011 INSP BY AQC008 HE HORIZONTAL STABILIZER LOWER SKIN REF SRM 55-10-01-2R-11 REPAI R 11. SEE PARTIAL WORK FOR WORK ACCOMPLISHED. DATA WAS

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