Service difficulty report · Drum · Piper PA22150

Difficulty date
July 13, 2000
Submitted
September 13, 2000
Operation
General aviation
Aircraft
N1940P
Make and model
Piper PA22150
Aircraft serial
222691
System (JASC)
3242 · Brake
Part
Drum
Part number
1690010
Condition
Warped
Location
Brake Drum
Part time
3,092 hours
Component
Landing Gear
Stage of operation
IN
How discovered
V
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

INNER WHEEL HALF ASSEMBLY CAUSING BRAKE DRUMS TO WARP. FOUND EXCESSIVE BRAKE DRAGGING WHEN PERFORMING ANNUAL INSPECTION. SINCE NO SPECIFIC KEY POSITION, ASSEMBLY CAN BE TAKEN OFF AND RE-ASSEMBLED IN DIFFERENT POSITIONS. WHEN TORQUING, WARPING CAN OCCUR IN BRAKE ASSEMBLY. CAUSE IS DUE TO INACCURACY OF CASTING AT ALL CONTACT POINTS. SUBMITTER SUGGESTED STAMPING ON THE INNER HALF OF WHEEL AND BRAKE ASSY AS REFERENCE MARK CAN HELP PREVENT WARPING. (X)

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