# SDR NACA2020010800169

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 24, 2019
- Submitted: January 8, 2020
- Operation: Air carrier
- Aircraft: N401YK
- Make and model: Boeing 737436
- Aircraft serial: 25860
- Aircraft time: 57,186 hours, 36,394 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Part number: 65458078
- 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/NACA2020010800169

## Discrepancy

BS279, S14R, CRACK FOUND ON FORWARD RADIUS TRIM OUT OF INTERCOSTAL (NDT HAS VERIFIED).  REPLACED INTERCOSTAL AT STA 279 STR 14R WITH NEW PART IAW B737-400 SRM 51-10-02 REV 104 AND INSTALLED IAW B737-400 SRM 51-40-02 REV 104. INSTALLED PART NUMBER 65-45807-8 IAW BOEING DWG #65-45807 REV J.

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