# SDR ANCF202601220001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 20, 2026
- Submitted: January 22, 2026
- Operation: Air carrier
- Aircraft: [N253AC](https://openairdocs.org/aircraft/N253AC), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 3690
- Aircraft time: 42,668 hours, 29,577 cycles
- Engine: Cfmint CFM565B4P
- Engine time: 42,193 hours, 30,100 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Safety Valve
- Part number: 1905A000001
- Part serial: 04323
- Condition: Faulted
- Location: Zone 700
- Part time: 42,668 hours
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ANCF202601220001

## Discrepancy

AFTER T/O L/G GEAR NOT UPLOCKED - AFTER T/O L/G GEAR NOT UPLOCKED.  IAW TSM 32-31-0-810-808-A CHECK FOR 28VDC CONNECTOR 49GA-A WAS PERFORMED WITH SATISFACTORILY RESULTS, NEXT STEP (6) REPLACE SAFETY VALVE (49GA) - AFTER T/O L/G GEAR NOT UPLOCKED THE PRESSURE DEFUEL WAS PERFORMED SATISFACTORILY IN ACCORDANCE WITH AMM TASK 28-25-00-650-001-A REV.75 REV.DATE 01-NOV-2025, DEFUEL 6600 KG FOB 4120 KG . - AFTER T/O L/G GEAR NOT UPLOCKED  RELAY 62GA WAS REPLACED IAW TSM 32-31-00-810-808-A REV. 75 DATE 01-NOV-2025 AND ESPM 20-46-50-01 REV. 55 DATE 01-NOV-2025 - THE SAFETY VALVE-L/G SYS ISOLATION WAS REMOVED AND REPLACED IN ACCORDANCE WITH TSM  32-31-00-810-808-A REV 75 DATE 01-NOV-2025 AND AMM 32-31-17-000/400-001-A REV 75 DATE 01-NOV-2025  PENDING OPERATIONAL TEST SUBTASK 32-31-17-720-050-A - *  FUNTIONAL TEST OF THE NORMAL EXTENSION AND RETRATION OF THE LANDING GEAR WAS ACCOMPLISHED SATIFACTORILY IAW AMM 32-31-00-720-002-A REV 75 DATE 01-NOV-2025. TEST SATISFACTORY   * OPERATIONAL CHECK TO ENSURE THE SAFETY-VALVE CLOSES AT 260 KTS WAS ACCOMPLISHED SATISFACTORILY IAW AMM 32-31-00-710-005-A01 REV 75 DATE 01-NOV-2025.

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