# SDR CALA2026071217702

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 11, 2026
- Submitted: July 14, 2026
- Operation: Air carrier
- Aircraft: [N87507](https://openairdocs.org/aircraft/N87507), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31637
- Aircraft time: 58,758 hours, 21,282 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Part number: 147A310050
- 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/CALA2026071217702

## Discrepancy

L/H EXTERIOR FUSELAGE SKIN HAS CORROSION AROUND LAV EXHAUST VENT BETWEEN BS907 AND BS927 AND BETWEEN STR S-21L AND STR S-22L.  REMOVED DAMAGE REF SRM 53-00-01-1A-1. ORIG .125, REMOVED .012, REMAINING .113 FOUND TO BE WITHIN LIMITS IAW SRM 53-00-01-1A FIG 103 DETAIL 'C'. RESTORED FINISHES IAW SRM 51-20-01. CORROSION REMOVED AND FOUND TO BE WITHIN LIMITS IAW SRM 53-00-01-1A FIG 103.  REMOVED DAMAGE REF B737 SRM 53-00-01-1A-1. ORIG .125, REMOVED .012, REMAIN .113 FOUND TO BE WITHIN LIMITS IAW SRM 53-00- 01-1A FIG 103 DETAIL 'C'. RESTORED FINISH IAW SRM 51-20-01.

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