Service difficulty report · Processor · Bolkms BK117B2

Difficulty date
April 19, 2009
Submitted
April 27, 2009
Operation
Air carrier
Aircraft
N117MK
Make and model
Bolkms BK117B2
Aircraft serial
7196
Aircraft time
9,311 hours, 38,065 cycles
Engine
Lyc LTS101*
Part
Processor
Part number
9132002111120
Part serial
139
Condition
Shorted
Location
Zone 100
Part time
9,311 hours, 38,065 cycles
Stage of operation
AA
How discovered
V
Nature of condition
B
Precautionary procedure
A

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

What was found

ACFT WAS ENROUTE FOR AN INTERFACILITY MISSION. SHORTLY AFTER LIFTING THE SHADIN UNIT BEGAN FLASHING L2 EXCEEDED. A CHECK OF ALL GAUGES INDICATED NORMAL. THEN THE COCKPIT LIGHTING AND INSTRUMENTS STARTED TO FLICKER AS IF A LOSS OF PWR. A THICK SMELL OF SMOKE WAS NOTED BY ENTIRE CREW OF AN ELECTRICAL NATURE. THE SHADIN UNIT THEN BEGAN SHOWING ROM FAILURE. ALL CREW AGREED THAT AN IMMEDIATE PRECAUTIONARY LANDING WAS PRUDENT. TWR WAS NOTIFIED ALONG WITH HCA OPERATIONS. THE ACFT WAS SAFELY PLACED IN A FIELD. PIP WAS INITIATED BY HCA OPERATIONS. CREW DEBRIEFING WAS MADE. ARRIVED AT LOCATION AND TALKED TO PILOT WHO INFORMED ME OF THE CODES RECEIVED ON THE SHADIN ETM REMOTE PROCESSOR. REMOVED THE ETM REMOTE PROCESSOR FROM THE CTR CONSOLE AND IMMEDIATELY SMELLED THE STRONG ODOR OF AN ELECTRICAL SHORT COMING FROM THE BACK OF THE ETM REMOTE PROCESSOR. HAD THE PILOT SMELL THE BACK OF THE ETM REMOTE PROCESSOR AS WELL AND HE ALSO VERIFIED THAT WAS THE SAME SMELL THAT CAUSED HIM TO MAKE A PRECAUTIONARY LANDING. FURTHER CHECK BEHIND THE CTR CONSOLE FOR POSSIBLE ELECTRICAL PROBLEMS AND COULD NOT FIND ANY. ONCE TALKING WITH THE FMS THE ETM REMOTE PROCESSOR WAS PLACARD INOP AND SIGNED OFF FOR CONTINOUS OPERATIONS IAW MEL CH. 31, ITEM 4, CATEGORY C. AS OF TODAY’S DATE 04-20-09 THE ITEM HAS BEEN MEL'D.