Service Difficulty Report                                     
 
1. Submitter Information
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(a) Unique Control #: 2016FA0000144     (b) Difficulty Date: 03/25/2016           
(c) Registration #  : 104TS             (d) Submitter Type : B - REPAIR STATION PART 145 
(e) Submitter Designator:               (f) Submission Date: 3/25/2016 9:26:33 AM 
 
2. Codes
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(a) Operator Designator     :            (b) Operator Type   : General Aviation     
(c) JASC/ATA Code           : 8500       
(d) Stage of Operation      : TX - TAXI/GRND HDL 
(e) How Discovered          : O - Other  
(f) Nature of Condition     : K  - FLUID LOSS 
                            : R  - PARTIAL RPM/PWR LOSS 
                            : J  - WARNING INDICATION 
(g) Precautionary Procedures: E - ENGINE SHUTDOWN 
                            : D - RETURN TO BLOCK 
(h) FAA Region              : NM         (i) District Office : 07                   
 
3. Major Equipment Identity
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              |Manufacturer  |Model         |Serial Number |Total Time    |Total Cycles  
(a) Aircraft  |DIAMON        |DA42          |42053         |4221          |              
(b) Engine    |AUSTRO        |E4            |E4B00169      |1293          |              
(c) Propeller |              |              |              |              |              
 
4. Problem Description
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DURING GROUND RUN, FOR WORK ON OPPOSITE, ENGINE NOT THE EFFECTED ENGINE, THE ENGINE
EXPERIENCED A RPM DROP DURING THE FULL POWER CHECK, ACCOMPANIED BY WHAT LOOKED LIKE SMOKE
AND OR OIL MIST, VERY ROUGH RUNNING CONDITION, AND ECU FAULT, BOOST PRESSURE FAILURE. 
POWER WAS PULLED BACK AND THE TEST RUN ABORTED AND IMMEDIATE TAXI BA