# SDR CALA2025120811849

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 3, 2025
- Submitted: December 8, 2025
- Operation: Air carrier
- Aircraft: [N16732](https://openairdocs.org/aircraft/N16732), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28948
- Aircraft time: 80,476 hours, 29,957 cycles
- System (JASC): [5414 · Nacelle/Pylon, Plate/Skin](https://openairdocs.org/jasc/5414)
- Part: Skin
- Part number: 31422003
- Condition: Cracked
- Location: Zone 400
- 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/CALA2025120811849

## Discrepancy

NR 1 ENGINE OTBD FAN COWL EXTERNAL SKIN BELOW IDG DOOR 423AL HAS A CRACK.   REPAIRED THE NR 1 ENGINE FAN COWL SKIN IAW ESR-WI 2023936-27-13210 AND EC/RA 7111-02830.

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