SDR 2021F00059

Service difficulty report · Wire · Raythn 400ARAYTHEON

Difficulty date
March 27, 2021
Submitted
March 29, 2021
Operation
General aviation
Aircraft
N711P
Make and model
Raythn 400ARAYTHEON
Aircraft serial
RK578
Aircraft time
5,207 hours, 4,225 cycles
Part
Wire
Condition
Cut
Location
Autopilot
Stage of operation
CR
How discovered
O
Nature of condition
B
Precautionary procedure
A

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

What was found

PILOTS REPORT HAVING AN UNCOMMANDED AUTOPILOT DISCONNECT THAT RESULTED IN THE AIRPLANE PITCHING UP. THE CAPTAIN PUSHED THE YOKE FORWARD AND GOT SPARKS FROM THE FORWARD SIDE OF THE YOKE. THE AIRPLANE LANDED AT KLAL INSTEAD OF KAPF. IT APPEARS THAT THE SHARP EDGE OF THE CAPTAIN'S DISPLAY CUT INTO THE WIRES THAT COME OUT OF THE YOKE AND CAUSED THE SPARKS. WIRES WERE REPAIRED AND AUTOPILOT SYSTEM IS BEING EVALUATED AT THIS TIME.