# SDR ASMF2018101509022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 25, 2018
- Submitted: October 15, 2018
- Operation: Air carrier
- Aircraft: N520AM
- Make and model: Boeing 737-81Q
- Registry model: [Boeing 737-81Q](https://openairdocs.org/model/boeing-737-81q) (OpenAirDocs)
- Aircraft serial: 29052
- Aircraft time: 59,181 hours, 21,539 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic Line
- Condition: Damaged
- Location: Hydrauylic Sys
- Part time: 10,678 hours, 4,124 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF2018101509022

## Discrepancy

LOW PRESSURE HYDRAULIC PUMP SYSTEM B. CAPTAIN REPORTED THAT DURING CRUISE THE LOW PRESSURE HYDRAULIC PUMP SYSTEM B LIGHTS TURNED ON, SO FLIGHT CREW ACCOMPLISHED THE QRH 13.6 PROCEDURE. MAINTENANCE PERSONNEL PERFORMED REVISION DETECTING THE HYDRAULIC LINE LOOSED AND DAMAGED INDUCING LEAKING IAW FIM 29-30 TASK 813 PROCEDURE; SO THE HYDRAULIC PRESSURE LINE P/N 155016-20-11 WAS REPLACED IAW AMM 29-11-21, TESTED CORRECT. AT MEX, AS PRECAUTIONARY ACTION, THE RIGHT HYDRAULIC PUMP WAS REPLACED IAW AMM 29-11-11, TESTED CORRECT.

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