Service difficulty report · Actuator · Lear 45LEAR

Difficulty date
April 13, 2006
Submitted
April 17, 2006
Operation
Air carrier
Aircraft
N611FX
Make and model
Lear 45LEAR
Aircraft serial
2037
Aircraft time
399 hours, 261 cycles
Part
Actuator
Part number
6627602001007
Condition
Failed
Location
Spoiler
Part time
399 hours, 261 cycles
Stage of operation
TO
How discovered
O
Nature of condition
F, J
Precautionary procedure
C

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

What was found

SPOILER FAIL CAS ILLUMINATED ON TAKEOFF ROLL THEN WENT OUT WHEN SPOILERS DEPLOYED. MAINTENANCE INTERROGATED THE MCOS COMPUTER AND FOUND SPOILERS FAILED ON RETRACT, GO CODE 2428 LR ACTUATOR COMMAND DOES NOT MATCH ACTUATOR POSITIONS. MX RANG THE WIRES AND FOUND THE LT ACTUATOR READINGS ARE A-B IS 706 OHMS, A-C IS 354, B-C IS 352 OHMS. ON THE RT SIDE A-B IS 648 OHMS, A-C IS 343, AND B-C IS 342 OHMS. FSR RECOMMENDS REPLACEMENT OF THE SPOILER ACTUATORS. ACTUATORS REPLACED IAW AMM AND GROUND CHECKS PERFORMED. NO ADDITIONAL DISCREPANCIES NOTED. THIS DATA HAS BEEN FORWARDED TO MFG ENGINEERING THROUGH THE JSLLC CAS REPORTING SYSTEM.