Service difficulty report · Magneto · Cessna 172S

Difficulty date
November 5, 2015
Submitted
November 20, 2015
Operation
General aviation
Aircraft
N21679
Make and model
Cessna 172S
Aircraft serial
172S9648
Engine
Lyc IO360L2A
Part
Magneto
Part number
4371
Part serial
15040613
Condition
Out Of Adjust
Location
Engine
Part time
94 hours
Stage of operation
NR
How discovered
9
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

MAGNETOS WERE INSTALLED ON 8/27/2015. INSTALL TACH 4455.9. DURING FIRST 100 HR INSPECTION, BOTH MAGNETOS WERE FOUND TO BE 8 DEGREES ADVANCED. BOTH WERE SET AT 33 DEGREES BTDC AND ARE SUPPOSED TO BE SET A 25 DEGREES. REMOVAL DATE 11/5/2015, TACH AT REMOVEAL 4550.1. TOTAL TIME ON PART WAS 94.2 HRS.

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