SDR 96ZZZX152

Service difficulty report · Gear Assy · Boeing 757*

Difficulty date
November 29, 1995
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N2FOR
Make and model
Boeing 757*
Part
Gear Assy
Part number
QAR44806
Condition
Bearing Froze
Location
Le Slat Actuator
Component
Sundstrandem · 755299A
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

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

What was found

NEEDLE BEARING FROZE IN PLANET GEAR ASSY CAUSING CARRIER TO BECOME INOPERATIVE. PIN ELONGATED MATING HOLES IN CARRIER. SUNSTRAND SB 27-15 REPLACES NEEDLE BEARING AND PIN WITH CORROSIVE RESISTANT MATERIAL. PRODUCT IMPROVEMENT. SUSPECT CAUSE, WATER IN ACTUATOR DUE TO ACTUATOR BEING VENTED DESIGN. DEFECT CAUSED SLAT LOCK-OUT.