Service difficulty report · Contact · Cessna 172S

Difficulty date
May 6, 2010
Submitted
May 6, 2010
Operation
General aviation
Aircraft
N851SP
Make and model
Cessna 172S
Aircraft serial
172S8759
Aircraft time
2,024 hours
Part
Contact
Part number
A1196A
Condition
Burned
Location
Ignition Sys
Part time
2,024 hours
Component
Ignition Switch
Component part number
A5109C2925010107
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

AD 93-05-06 (IGNITION SWITCH INSPECTION) DOES NOT APPLY BY S/N TO 2001 CESSNA 172S - BUT THE AD STATES: REPEAT INSPECTION AND LUBRICATE IAW ACS SB92-01 EACH 2000 HRS. CHOOSE TO INSPECT & RE-LUBE BECAUSE OF THE MFR'S, 2000 HR SERVICE LIFE. UPON INSPECTION THE SWITCH CONTACTS WERE FOUND TO BE BURNT ON THE STARTER CIRCUIT CONTACTS (AS SUSPECTED IN AD 93-05-06) AND THERE WAS NO SIGNS OF EVER BEING FACTORY LUBRICATION. NOTE: THE AD STATES THAT SWITCHES MFR'D, AFTER FEB 1989 CAME LUBRICATED. INSTALLED ACS PRODUCTS KIT A3650-2 (NEW CONTACTS & SPECIAL GREASE).

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