# SDR CALA2025081807859

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 14, 2025
- Submitted: August 18, 2025
- Operation: Air carrier
- Aircraft: [N827UA](https://openairdocs.org/aircraft/N827UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1022
- Aircraft time: 78,979 hours, 34,477 cycles
- System (JASC): [3220 · Nose/Tail Landing Gear](https://openairdocs.org/jasc/3220)
- Part: Strut
- Condition: Leaking
- Location: Nlg Steering
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025081807859

## Discrepancy

FOUND LEAK FROM BACK SIDE OF STRUT HOUSING. A CONSTANT STREAM APPEARS TO BE COMING FROM BETWEEN BARREL & SWIVEL TUBE. NGL HAS HISTORY OF FLUID & NITROGEN SERVICE.  ACCOMPLISHED CHECK OF NLG STEERING, HYD SYS HAS AN INTERNAL LEAK..  LEAKING FLUID SMELLS LIKE HYD FLUID & GREEN HYD QTY LOW.  ACCOMPLISHED REMOVAL OF NLG STEERING CYLINDER (EV NLG) FWD & AFT IAW 32-51-42-000-001-C-01.  FWD CYLINDER HAD DAMAGED SEALS.  VISUAL CHECKED AROUND PISTONS INSURING PISTON EXTERNAL CHAMFER IN CORRECT CONDITION,  NO DEFECTS NOTED IAW 32-51-42-400-001-C-01,. CONTINUE FROM SUBTASK 4.(A)(4).   INSTALLATION OF SEALS & BACK-UP RINGS ASSY.  REINSTALLED & REPLACED SEALS ON FWD & AFT STEERING CYLINDERS & PERFORMED LEAK & OPS CHECK. NO LEAKS & OPS CHECKED GOOD IAW AMM 32-51-42-000-001-C01.

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