Service difficulty report · Uplock Switch · Cessna 680A

Difficulty date
October 1, 2022
Submitted
October 10, 2022
Operation
Air carrier
Aircraft
N668QS
Make and model
Cessna 680A
Aircraft serial
680A0276
Aircraft time
1,453 hours, 957 cycles
Part
Uplock Switch
Part number
69481013
Condition
Defective
Location
Rt Mlg
Stage of operation
TX
How discovered
C
Nature of condition
J
Precautionary procedure
O

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

What was found

MLG: AFTER TAKEOFF RIGHT MAIN LANDING GEAR FAILED TO RETRACT. RECEIVED A GEAR DISAGREE R AMBER CAS MESSAGE. PERFORMED ARES DOWNLOAD & SENT TO MANUFACTURER FOR REVIEW. JACKED ACFT REF MM 07-10-10. PERFORMED MAIN MLG UPLOCK SWITCH ADJUSTMENT PROCEDURE IAW MM 32-32-00 AND NOTED THAT BOTH THE LT AND RT MLG UPLOCK SWITCHES ARE RIGGED CORRECTLY. DURING MANUF REVIEW OF ARES DATA, IT WAS NOTED THAT STARTING WITH OLDEST ON THE 15TH THE RT UPLOCK SWITCH, UPLOCK LEG FEEDING THE GEA TOOK 17 SECONDS TO CHANGE STATE TO NOT UP AND LOCKED AFTER LANDING GEAR HANDLE WAS PUT DOWN. THE SECOND PLOT IS OF THE GEAR DOWN FERRY FLIGHT TO MKE SHOWING RT UPLOCK SWITCH LEG GOING TO GEA GOES BANANAS. THE THIRD PLOT IS FROM THE LATEST SQUAWK SHOWING THE SAME LEG OF RT UPLOCK SWITCH SWITCH WAS STEADY STATE, NOT UP AND LOCKED, BUT THE TWO LEGS GOING TO THE PCBS CHANGED AS THEY SHOULD. ACCESSED RT MLG UP LOCK SWITCH, DOWNLOCK SWITCH & CONNECTORS & VISUALLY INSPECTED CONNECTOR & CONNECTOR PINS AND SOCKETS WITH NO DISCREPANCIES. ACCESSED GEA 3 AND CONNECTOR PT408 ABOVE BAGGAGE AS REQUIRED . VISUALLY INSPECTED GEA 3 AND PT408 CONNECTOR, PINS, AND SOCKETS WITH NO DISCREPANCIES. ACCESSED PT008 FORWARD OF THE BAGGAGE COMPARTMENT AS REQUIRED. VISUALLY INSPECTED PT008 CONNECTOR, PINS, AND SOCKETS WITH NO DISCREPANCIES. ACCESSED WIRE HARNESS RUN ABOVE RT WING. VISUALLY INSPECTED HARNESS, JG002, AND GYCB02 WITH NO DISCREPANCIES. ACCESSED PY002 BEHIND FORWARD BELLY PANEL. VISUALLY INSPECTED HARNESS, & PY002 CONNECTOR, PINS & SOCKETS WITH NO DISCREPANCIES. CONNECTED WIRELESSLY TO AIRCRAFT ARES FROM LAPTOP WITH ARES LIVE VIEW SOFTWARE AND SECURED THE RT MLG UP LOCK SWITCH IN THE DEPRESSED POSITION WHILE MANIPULATING THE HARNESS FROM THE SWITCH TO THE GEA 3 IN THE BAGGAGE COMPARTMENT, AS WELL AS ALL OTHER PREVIOUSLY ACCESS CONNECTORS, NOTING THAT THE UP AND LOCKED SIGNAL IN THE ARES LIV

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