SDR FDEA201312203031

Service difficulty report · Bolt · Boeing 75728A

Difficulty date: December 20, 2013
Submitted: December 24, 2013
Operation: Air carrier
Aircraft: N970FD
Make and model: Boeing 75728A
Aircraft serial: 28166
Aircraft time: 61,665 hours, 19,607 cycles
System (JASC): 2780 · Leading Edge Slat Control System
Part: Bolt
Condition: Out Of Position
Location: Le Slat
Stage of operation: LD
How discovered: O
Nature of condition: F, J
Precautionary procedure: K

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

What was found

AFTER LANDING GOT FLAP LE SLAT AYSYM EICAS MESSAGE BETWEEN UP & 1 POSITION. NR 1 FLAP, SLAT ELEX UNIT BITE SHOWS RT SLAT DRIVE. NR 2 UNIT SHOWS RT SLAT XMITTER. TROUBLESHOT IAW FIM 27-51. FAULT TREE 805, FOUND NR 6 LE SLAT CTR OTBD TORQUE TUBE DRIVE SPLINED COUPLING BOLTS THREE EACH DROPPED OUT FROM COUPLING. REINSTALLED THREE BOLTS IN SPLINED COUPLING & SAFE TIED BOLTS IAW AMM 27-81-20-4. RAN FLAPS & SLATS THRU SEVERAL TIMES IAW AMM 27-81-00-5, NO FAULTS FOUND. A/C OK FOR SERVICE.

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