SDR HALA2013112300171

Service difficulty report · Ratio Changer · Boeing 76733A

Difficulty date: November 23, 2013
Submitted: November 26, 2013
Operation: Air carrier
Aircraft: N580HA
Make and model: Boeing 76733A
Aircraft serial: 28140
Aircraft time: 45,297 hours, 8,273 cycles
System (JASC): 2720 · Rudder Control System
Part: Ratio Changer
Part number: 285T0014104
Part serial: 001600
Condition: Malfunctioned
Location: Rudder
Part time: 7,029 hours, 1,127 cycles
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

CLIMBING OUT, RECEIVED EICAS RUDDER RATIO MESSAGE & LIGHT. FOLLOWED QRH AND LT HYDRAULIC WAS NORMAL. FIM27-21 BITE OF BOX NO FAULTS, R & R RT RUDDER RATIO CHANGER, IAW AMM 27-09-00. OPS TEST OF RUDDER AND RUDDER TRIM CONTROL SYS IAW AMM 27-21-00. OPS CHECKED HIGH PRESSURE GOOD, NO FAULTS NOTED. OK FOR SERVICE.

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