# SDR CALA2026041615407

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2026
- Submitted: April 16, 2026
- Operation: Air carrier
- Aircraft: [N24736](https://openairdocs.org/aircraft/N24736), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28803
- Aircraft time: 81,552 hours, 28,632 cycles
- System (JASC): [4910 · APU Cowling/Containment](https://openairdocs.org/jasc/4910)
- Part: Angle
- Part number: 148A86151
- Condition: Corroded
- Location: Zone 100
- 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/CALA2026041615407

## Discrepancy

APU COMPARTMENT LEFT SIDE LOWER FRAME HAS LIGHT CORROSION IN SEVERAL SPOTS.   ACCOMPLISHED ESFR FORM AS PER GMM 04-20-05. REMOVED AND REPLACED APU COMPARTMENT LEFT SIDE LOWER FRAME PER SRM 51-40-02-0G-0 AND DWG 148A8600.

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