PISTON | ||
LYCOMING IO540 K1A5 – ATA 7314 ENGINE FUEL PUMP – PUMP – FAILED. DR 611954119 | ||
During taxi, fuel pressure dropped off and engine started to run rough. Defect rectified by replacing engine driven fuel pump. Teardown report has been requested from vendor. | ||
LYCOMING O320 D3G – ATA 7322 FUEL CONTROL/RECIPROCATING ENGINES – CARBURETTOR – LEAKING. DR 611954142 | ||
Carburettor found to be leaking during routine leak check. Further investigation found a hole in the casting between the bottom of the fuel bowl and the lower throttle body area. Carburettor replaced with serviceable item. |
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LYCOMING IO540 M1A5 – ATA 8520 RECIPROCATING ENGINE POWER SECTION – CYLINDER – LOW COMPRESSION. DR 611954157 | ||
During inspection, cylinder compression #1 check failed. Cylinder removed and a crack was found in inlet port extending from inlet seat. There were signs of pre-ignition / detonation as well.
Could be possible issue with fuel and high CHT ops. Have amended company operations to reduce CHT. |
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LYCOMING IO540 AE1A5 – ATA 8520 RECIPROCATING ENGINE POWER SECTION – CYLINDER – LOW COMPRESSION. DR 611954158 | ||
#1-cylinder compression checked – cylinder failed. Cylinder cracked at inlet port originating at valve seat. | ||
LYCOMING O320 E2D – ATA 7421 SPARK PLUG/IGNITER – SPARK PLUG – FAULTY. DR 611954195 | ||
Engine rough running.
Centre electrode on no. 4 lower spark plug missing, combined with fouling of no. 4 top plug, it resulted in cylinder not firing correctly. Resolution: No.4 top spark plug cleared of debris; lower spark plug replaced. Engine ground runs carried out, nil defects evident, engine ops normal. |
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CONTINENTAL GTSIO520 M – ATA 8550 RECIPROCATING ENGINE INTERNAL OIL SYSTEM – OIL LINE – CRACKED AND LEAKING. DR 611954201 | ||
While conducting aerial survey, excessive oil was observed on the right hand engine cowling. Engine was shutdown as a precaution.
Root cause: Cracked inlet oil pipe. |