# SDR CALA2023011300113

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2023
- Submitted: January 13, 2023
- Operation: Air carrier
- Aircraft: [N446UA](https://openairdocs.org/aircraft/N446UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 834
- Aircraft time: 74,757 hours, 30,888 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Part number: D5348004720600
- Condition: Corroded
- Location: Frms 64-65 S31r
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023011300113

## Discrepancy

AFT CARGO COMPARTMENT RH SIDE AT BETWEEN FR64 AND FR65 STR 31 HAD CORROSION.   AFTER EVALUATION OF CORROSION NO ALLOWABLE DAMAGE ON BLEND IAW S INGER IAW SRM 51-42-11, AND INSTALLED OUTFLOW VALVE IAW AMM 21-3 RM 53-41-13-283-002, REMOVED OUT FLOW VALVE IAW AMM 21-31-51, R 1-51-400-006-A.  REMOVED STRINGER 31R FROM FR64 TO 67 IAW SRM 51-41-11, RECEIVED, LOCATED AND DRILLED IAW SRM 51-44-11, INSTALLED THE NEW STRINGER.

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