SDR UIEA2024081900838

Service difficulty report · Pdu · Boeing 747409F

Difficulty date: August 19, 2024
Submitted: August 20, 2024
Operation: Air carrier
Aircraft: N439GT
Make and model: Boeing 747409F
Aircraft serial: 30767
Aircraft time: 93,913 hours, 17,247 cycles
System (JASC): 2780 · Leading Edge Slat Control System
Part: Pdu
Part number: 1267629
Part serial: 11865
Condition: Failed
Location: Zone 500
Stage of operation: CR
How discovered: O
Nature of condition: F, J
Precautionary procedure: A

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

What was found

2 HR IN CRUISE FLIGHT, LEFT MID SPAN L/E FLAP INDICATED DEPLOYED, "FLAP PRIMARY" MASTER CAUTION. AFTER 5 MIN, FLAPS PRIMARY MASTER CAUTION, FLAP DRIVE CAUTION ANNUNCIATED, COULD NOT RETRACT IN FLIGHT, "LE MULTI DRIVE" STS MSG(<P>R/R L2 L/E SLAT PDU PER AMM 27-81-03. OPS & IND CHECK GOOD. NIL EXISTING FAULT NOTED. REF IPC 27-81-03-02 ITEM 95.</P>)