# SDR CALA2020010600053

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 26, 2019
- Submitted: January 6, 2020
- Operation: Air carrier
- Aircraft: [N37287](https://openairdocs.org/aircraft/N37287), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31636
- Aircraft time: 51,792 hours, 18,330 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Seal
- Part number: 111A24011
- Condition: Cracked
- Location: Fuselage
- 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/CALA2020010600053

## Discrepancy

ABOVE WING CENTER BOX BS 540 BULKHEAD AT RBL 14.5 VAPOR SEAL IS CRACKED AT AFT END OF SHEAR TIE INDICATING A POSSIBLE CRACK ON SHEAR TIE. [DOT 124-001] REF AAR NR: 99859499. REMOVED AND REPLACED SHEAR TIE AT WINY CENTER BOX BS540 BULKHEAD RBL 14.5 IAW B737-800 SRM 51-40-02. APPLIED YELLOW PRIMER AND VAPOR BARRIER SEALANT ON SHEAR TIE WING CENTER BOX BS 540 RBL 14.5 IAW B737-800 AMM 28-11-00-300-804. APPLIED FUEL TANK SEALANT INTERNALLY/INSIDE TANK CENTER BOX BS540 RBL 145 ADD IAW REF B737-800 AMM 51-31-00. INSPECTION C/W

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