# SDR CALA2026051816336

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 16, 2026
- Submitted: May 18, 2026
- Operation: Air carrier
- Aircraft: [N78013](https://openairdocs.org/aircraft/N78013), registered now
- Make and model: Boeing 777224
- Aircraft serial: 29861
- Aircraft time: 124,679 hours, 12,910 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Condition: Leaking
- Location: Hyd Sys
- 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/CALA2026051816336

## Discrepancy

LEFT HYD RES SUSPECTED LEAK. AT TIME OF DIVERT QUANTITY DEC TO 0 .61 SERVICED L, C, R HYD SYS TO FULL IAW AMM 12-12-01-610-803. PERFORMED L ENG RUN AND PRESSURIZED L EDP AND L ACMP.  NO L HYD SYS DECREASE DURING OPERATION. NO LEAKS NOTED POST ENG RUN WALKAROUND. ACCOMPLISHED FIM 29-11 TASK 962-C1, FOUND SIGNS OF HYD LEAK AND HYD RESIDUE AROUND NO.1 ENG EDP. RETORQUED ALL FITTINGS, ADAPTERS, AND LINES ON NR 1 ENG EDP IAW AMM 29-11-05-400-801-002 AND IDLE LEAK CHECKED IAW AMM 71-00-00-700-805-G00. LEAK CHECK SATIS. DURING ENG RUN, MOVED ALL FLIGHT CONTROLS AND MOVED SPOILERS SIMULTANEOUSLY BUT QTY COMPARED ACROSS L, C, R DID NOT HAVE SIGNIFICANT DIFFERENCES. ONCE STABILIZED AFTER PFC MOVEMENTS ALL HYD SYS QTY STAYED AT 0.94. OK FOR SVC.

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