SDR DALA2022112807587

Service difficulty report · Ratio Changer · Boeing 7572Q8

Difficulty date: November 23, 2022
Submitted: November 28, 2022
Operation: Air carrier
Aircraft: N704X
Make and model: Boeing 7572Q8
Aircraft serial: 28163
Aircraft time: 91,780 hours, 23,737 cycles
System (JASC): 2720 · Rudder Control System
Part: Ratio Changer
Condition: Warning Message
Stage of operation: DE
How discovered: O
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

SHIP 6803 - MISC/DE - DUE TO L HYD QUANTITY LOW INDICATION CORRECTIVE ACTION: MTC FOUND LEAK COMING FROM RUDDER RATIO. REPLACED RUDDER RATIO, EDP, PTU, ACMP, AND ALL REQUIRED FILTERS. REPLACED RELAYS K105 AND K123. C/W NO GO ODI PREVENTION.

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