SDR 20010502CW001

Service difficulty report · Hinge · Piper PA31350

Difficulty date: March 5, 2001
Submitted: May 2, 2001
Operation: General aviation
Aircraft: N555FS
Make and model: Piper PA31350
Aircraft serial: 317952046
Engine: Lyc TIO540*
System (JASC): 5280 · Landing Gear Doors
Part: Hinge
Part number: 4752932
Condition: Cracked
Location: Mlg Inner Door
Part time: 5,393 hours
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

INSPECTED HINGES, ONLY FORWARD HINGES ON BOTH DOORS HAD CRACKS ON INNER RADIUS APPROX .1250 TO .1875 INCH DEEP. REAR HINGES WERE NOT CRACKED, REPLACED ALL FOUR HINGES. SUSPECT CRACKS ARE CAUSED DUE TO LOCATION OF HYD ACTUATOR FORWARD OF FORWARD HINGE, CAUSING MORE STRESS ON FORWARD HINGE THAN ON REAR HINGE.

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