SDR FDEA2020072311615

Service difficulty report · Gearbox · Boeing 757236

Difficulty date: July 21, 2020
Submitted: July 23, 2020
Operation: Air carrier
Aircraft: N954FD
Make and model: Boeing 757236
Aircraft serial: 29113
Aircraft time: 35,842 hours, 21,780 cycles
System (JASC): 2750 · Trailing Edge Flap Control System
Part: Gearbox
Condition: Underserviced
Location: Te Flaps
Stage of operation: AP
How discovered: O
Nature of condition: F
Precautionary procedure: A

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

What was found

TE FLAP DISAGREE ON FINAL. PERFORMED QRH. BNA U BITE OF FSEU #1 SHOWED FLAP DISAGREE. FIM 27-51-00 FIG. 105, NO AFT FLAP TRANSMISSION OVERLOAD INDICATORS ARE TRIPPED. FOUND SEVERAL AFT FLAP BALLSCREW, GIMBALS AND GEARBOXES NEEDING SERVICED. LUBRICATED AND SERVICED LEFT AND RIGHT AFT FLAP BALLSCREW, GIMBALS AND GEARBOXES AS REQUIRED IAWAMM 12-21-09. RAN FLAPS , SLATS THROUGH SEVERAL CYCLES WITH NO DEFECTS NOTED IAW AMM 27-50-00.