McFarlane Aviation Products

Part Number: 766-585

DRILL FIXTURE

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Witness Hole Drill Fixture

Saves time! Avoids disassembly of U-joint and shaft

A convenient tool to drill a witness hole in Piper universal joints per Piper Service Bulletin 1197D.

Make	Series	Model	Beginning S/N	Ending S/N	Eligibility Chart
Piper	Many	Many	0	ZZZZZZZZZZZZZZZ	6641

Question
How do I know if my universal joint needs to be replaced? A universal joint attaches to each control yoke shaft behind the instrument panel. Universal joints are very precision. Replacement of the universal joint is required if any free motion or rust around the joint pivots is detected or if the joint fails inspection required by the Piper AD 2010-15-10.