Service difficulty report · Pdu · Cndair CL604

Difficulty date
April 25, 2019
Submitted
August 17, 2020
Operation
General aviation
Make and model
Cndair CL604
Engine
Ge CF343B
Part
Pdu
Part number
20222565
Condition
Overheated
Location
Flap System
Stage of operation
NR
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

(CAN) FLAP MOTOR 1 AND 2 OVERHEAT AT THE SAME TIME. CARRIED OUT OPS TESTS FLAPS AND CB PULLED OUT ONE BY ONE OF THE FLAP MOTORS. AND OPS CHECK ON ONE MOTOR EACH TIME. NO OVERHEAT OCCURRED. ALL SATISFACTORY DUE TO BOTH FLAP MOTORS OVERHEAT AT THE SAME TIME IT WILL BE MOST LIKELY THE POWER DRIVE UNIT. BECAUSE THE OVERHEAT IS GOING OVER 2 DIFFERENT RELAY TO GENERATE THE WARNING TO THE DCU. THE NEXT T/S STEP IS TO SWAP OR REPLACE THE POWER DRIVE UNIT. WE CAN SEE FOR BOTH FLAP MOTORS ONE TIME OCCURRENCE ON THE 25TH APR. AT THE MOMENT FLAP FAIL NOT TO BE REPRODUCED. CAN BE MONITORED AND IF BOTH MOTOR OVERHEAT OCCURS SUGGEST PDU REPLACEMENT OR DEEPER T/S. (TC# 20190430014)