# SDR ASMF202110010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2021
- Submitted: October 27, 2021
- Operation: Air carrier
- Aircraft: [N957AM](https://openairdocs.org/aircraft/N957AM), registered now
- Make and model: Boeing 737852
- Aircraft serial: 39957
- Aircraft time: 24,021 hours, 8,946 cycles
- System (JASC): [2911 · Hydraulic Power Accumulator, Main](https://openairdocs.org/jasc/2911)
- Part: None
- Condition: None
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF202110010

## Discrepancy

DURING TRANSIT CHECK, THE HYDRAULIC SYSTEM B WAS SHOWED WITH QUANTITY OF CERO. MAINTENANCE PERSONNEL PERFORMED REVISION DETECTING LINE TUBE HYDRAULIC SYSTEM B MAIN BAY MLG RIGHT SIDE REAR LEAKAGE; SO THE REFILL HYDRAULIC RESERVOIR A AND B STANDBY SYSTEM WAS ADDED AND THE LINE TUBE HYDRAULIC SYSTEM B MAIN BAY MLG RIGHT SIDE REAR WALL P/N 272A4453-1019, S/S, MANUFACTURER BOEING COMPANY WAS REPLACED IAW AMM 20-10-52-300-803 AND AMM 29-11-12 AND THE HYDRAULIC SYSTEM B OPERATIONAL TEST WAS PERFORMED IAW AMM 29-11-29, TESTED CORRECT.

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