SDR 2002FA0001258

Service difficulty report · Fork · Cessna 175

Difficulty date: October 10, 2002
Submitted: November 6, 2002
Operation: General aviation
Aircraft: N9391B
Make and model: Cessna 175
Aircraft serial: 55191
Engine: Lyc O360*
Propeller: Hartzl HCC2YK1
System (JASC): 6114 · Propeller Hub Section
Part: Fork
Part number: B24573
Condition: Cracked
Location: Propeller
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

OVERHAUL WAS BEING ACCOMPLISHED DUE TO HIGH CALENDER TIME, LOW HOURS SINCE NEW. DURING MAGNETIC PARTICAL INSPECTION, MULTIPLE LARGE CRACKS WERE DISCOVERED IN PITCH CHANGE FORK. FORK APPEARS TO BE MANUFACTURING DEFECTS, POSSIBLY HEAT TREAT CRACKS.

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