Service difficulty report · Flap System · Boeing 7474R7F

Difficulty date
December 14, 2023
Submitted
December 14, 2023
Operation
Air carrier
Aircraft
N581UP
Make and model
Boeing 7474R7F
Aircraft serial
25866
Aircraft time
124,770 hours, 21,008 cycles
Part
Flap System
Part number
UNKNOWN
Part serial
NA
Condition
Warning Message
Location
Unknown
Stage of operation
CL
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

*AIR TURN BACK* ON TAKEOFF CLIMBING OUT OF 2000 SELECTED FLAPS 15 FROM 5 AND FLAPS PRIMARY CAUTION AND LE MULT DRIVE MESSAGES CAME UP. FLAPS RETRACTED NORMAL AND LE RETRACT SLOW (SEC MORE).EXTENSION NORMAL ON LANDING DISCOVERED FLAPS PRIMARY AND LE MULT DRIVE MESSAGES LINKED TO SINGLE CMC LISTED FAULT #27695. TROUBLESHOT PER FIM 27-88 TASK 817. PERFORMED GVI OF R1 FEEDBACK SWITCH AND SWITCH ACTUATOR. NO DEFECTS NOTED IN ASSEMBLIES. PERFORMED LE FLAPS OPS TEST MULTIPLE TIMES IAW AMM 27-88-00. OPERATIONAL SPEED OKAY. REPORTED STATUS MESSAGES SUCCESSFULLY CLEARED. UNABLE TO RECREATE FAULT CONDITION AT THIS TIME. CMC SHOWS NO OCCURRENCE OF THIS CONDITION PRIOR TO THIS INTERMITTENT FAULT. SYSTEM CHECKS OKAY AT THIS TIME.

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