# SDR CALA2021100101732

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 29, 2021
- Submitted: October 1, 2021
- Operation: Air carrier
- Aircraft: [N436UA](https://openairdocs.org/aircraft/N436UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 638
- Aircraft time: 77,218 hours, 30,071 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: None
- Part number: D5348004720801
- Condition: Abnormal
- Location: Fr 66 St 25rt
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2021100101732

## Discrepancy

AFT CABIN BELOW R2 DOOR SILL AFT OF FRAME 66 STRINGER HAS EXFOLI ATION CORROSION (A3NB-53-3-6033) GENERATED BY V052030 AT HAECO LCQ PER NR 9294659 (28659). REMOVED AND REPLACED STRINGER 25RT AFT OF FR 66RT IAW A320 SRM 5 1-42-11. PERFORMED BY V913406 AND INSP BY V061334.

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