# SDR CALA2019071801213

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2019
- Submitted: July 19, 2019
- Operation: Air carrier
- Aircraft: [N77019](https://openairdocs.org/aircraft/N77019), registered now
- Make and model: Boeing 777224
- Aircraft serial: 35547
- Aircraft time: 64,725 hours, 5,815 cycles
- System (JASC): [2710 · Aileron Control System](https://openairdocs.org/jasc/2710)
- Part: O-Ring
- Part number: NAS161210
- Condition: Broken
- Location: Aileron Pcu
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2019071801213

## Discrepancy

HYD QTY LOW L EICAS ADVISORY, LEFT HYDRAULIC SYSTEM RESERVOIR QUANTITY LOW. QTY < .40. LEAK CHK FOUND RT OUTBD AILERON OUTBD PCU CAP (IPC 27-11-11-11 ITEM 665) LEAK. INSPECTION FOUND LOCKWIRE BROKEN. CAP REMOVED FOUND O-RING BROKEN. O-RING (IPC 27-11-11-11 ITEM 670J) REPLACED AND CAP INSTALLED AS PER AMM 20-10-19 & 20-11-00. SUBSEQ LEAK CHECK SATIS. LH HYD SYS FILTERS POP OUT PINS INSPECTED SATIS. HYD FLUID FILLING TO FULL AS PER AMM 12-12-01. FLT CONTROL ACTUATOR CONFIDENCE TEST CARRIED OUT SATIS AS PER AMM 27-02-00.

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