N9163M
Operators of this aircraft
Who operated this tail, and how firmly we know it.
No operator established for this aircraft.
Accident & incident history
No NTSB accidents or incidents on file for this aircraft.
Maintenance disclosures
SPARK PLUGS WERE REPLACED BECAUSE OF WEAR. UPON INSPECTION OF NEW PLUGS, FOUND WIRE WRAPPED AROUND CENTER ELECTRODE ON TWO OF THE NEW PLUGS (WHICH GROUNDED IT OUT) AND ANOTHER SIX WOULD NOT TEST GOOD IAW CHAMPION TEST PROCEDURES. OBTAINED ANOTHER NEW SET OF PLUGS AND FOUND ONE LUG WITH WIRE AROUND CENTER ELECTRODE AND TWO OTHERS WOULD NOT TEST GOOD. BOTH SETS CAME FROM THE SAME BATCH OR LOT. LOT NR 4G99.
INSTALLED NEW PLUGS IN ENGINE. PERFORMED RUN-UP. OPS OK. FOUR HOURS LATER, ENGINE HAD A 600 RPM DROP. REMOVED SPARK PLUGS, FOUND A PIECE OF WIRE AROUND CENTER ELECTRODE OF 3 PLUGS AND 4 OTHER PLUGS NOT FIRING VERY HOT ON PLUG TESTER. OPENED ANOTHER SET OF LUGS AND FOUND PIECE OF METAL RING AROUND CENTER ELECTRODE. APPEARED TO BE FROM MANUFACTURING PROCESS. LOT NR 4G99.
COMPRESSION TEST REVEALED 64/80 FOR NR 6 CYLINDER. USED LEAK DETECTOR LIQUID TO DETECT CRACK ADJACENT TO EXHAUST PORT BETWEEN 18TH AND 19TH FIN.