# SDR CALA2026090719250

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 26, 2026
- Submitted: September 9, 2026
- Operation: Air carrier
- Aircraft: [N78540](https://openairdocs.org/aircraft/N78540), registered now
- Make and model: Boeing 737824
- Aircraft serial: 63646
- Aircraft time: 27,628 hours, 10,398 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [5720 · Wing Miscellaneous Structure](https://openairdocs.org/jasc/5720)
- Part: Support
- Part number: 116A530137
- Condition: Corroded
- Location: Zone 500
- 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/CALA2026090719250

## Discrepancy

LEFT WING LE O/B LOWER PANEL SUPPORT HAS CORROSION AT STA SS 67.53 RH SIDE.   REMOVED SUPPORT ON LEFT WING LE O/B LOWER PANEL AT STA. SS 67.53 RH SIDE, RECEIVED NEW SUPPORT TAG A462489 P/N. 116A5301U37, LOCATED AND DRILL NEW SUPPORT, APPLIED ALODINE ON NEW HOLES, APPLIE D PRIMER AND INSTALLED SUPPORT IAW AIPC 57-40-00-17 ITE M 25, SRM 51-40-05-0G-0, 51-20-01-0G-0, AMM 51-21-72-370-804 AND SRM 51-40-02-0G-0 STEP 4. B. AND STEP 7.

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