SDR ASMF20170911009

Service difficulty report · Pcu · Boeing 7772Q8

Difficulty date: August 28, 2017
Submitted: September 11, 2017
Operation: Air carrier
Aircraft: N774AM
Make and model: Boeing 7772Q8
Aircraft serial: 28689
Aircraft time: 66,021 hours, 9,214 cycles
System (JASC): 2761 · Drag Control Actuator
Part: Pcu
Part number: B53540008
Part serial: 1473
Condition: Leaking
Location: Nr 7
Part time: 66,021 hours, 9,214 cycles
Stage of operation: IN
How discovered: O
Nature of condition: K
Precautionary procedure: K

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

What was found

DURING TRANSIT CHECK, DETECTED EVIDENCE OF A HYDRAULIC LEAK IN THE LEFT MAIN LANDING GEAR. MAINTENANCE PERSONNEL PERFORMED INSPECTION IAW AMM 27-61-00, DETECTING A LEAK IN THE INBOARD SPOILER POWER CONTROL ACTUATOR, THE POWER CONTROL UNIT NR 7 WAS REPLACED IAW AMM 27-61-03, TESTED CORRECT.

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