# SDR CALA2023102703198

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 20, 2023
- Submitted: October 27, 2023
- Operation: Air carrier
- Aircraft: [N437UA](https://openairdocs.org/aircraft/N437UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 655
- Aircraft time: 81,823 hours, 32,133 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Stiffener
- Part number: D5311335020100
- Condition: Cracked
- Location: Fr4, Window
- 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/CALA2023102703198

## Discrepancy

REVB AD 2020-06-10 FLIGHT DECK FR4 F.O SLIDING WINDOW VERTICAL STIFFENER PRODUCED CRACK DURING HFEC INSPECTION (EA 5310-07673) GENERATED AT HAECO LCQ ON NR 9290067 (28067) BY MECH V061690 REPAIRED DISCREPANT AREA AT FLIGHT DECK FR4 F.O. SLIDING WINDOW VERTICAL STIFFENER IAW SRM 51-27-11-911-001 AND EA 5310-07673 OP 004 REV. B. PERFORMED BY V929087.

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