Service difficulty report · Anti-Skid Sys · Emb EMB500

Difficulty date
May 28, 2013
Submitted
June 3, 2013
Operation
General aviation
Aircraft
N917MM
Make and model
Emb EMB500
Aircraft serial
50000142
Aircraft time
803 hours, 764 cycles
Part
Anti-Skid Sys
Part number
90005036
Part serial
MAR090285
Condition
Failed
Location
Zone 700
Part time
803 hours, 764 cycles
Stage of operation
LD
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

SHORTLY AFTER TOUCHDOWN, ACFT DISPLAYED CAS ALERT "ANTISKID FAIL." PILOT APPLIED BRAKES AND AFTER DECELERATION, NOTED A VIBRATION CONSISTENT WITH FLAT OR LOCKED WHEEL. MX DOWNLOADED THE ACFT CENTRAL MX COMPUTER (CMC) AND FORWARDED THE FILES TO ENGINEERING. ENGINEERING STATED THE ANALYSIS OF THE CMC SHOWED NO "BRK FAIL" AT ALL, ONLY A CAS "ANTI SKID FAIL" CAUSED BY (LT) TRANSDUCER FAIL JUST AFTER THE EVENT. BRAKE PRESSURES WERE OK AFTER THE ANTI-SKID FAIL AND THIS INDICATED THE BRAKE SYS WAS WORKING WELL EVEN AFTER THE TRANSDUCER FAILED. MX R & R THE LT WHEEL SPEED TRANSDUCER (PN: 90005036) ALONG WITH THE BLOWN TIRE; AND FOR PRECAUTION: THE BRAKE AND BRAKE CONTROL UNIT. THERE WAS NO EVIDENCE OF IMPROPER MX PERFORMED ON THE UNITS OR ACFT.

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