Service difficulty report · Tire · Boeing 747422

Difficulty date
October 23, 2013
Submitted
October 25, 2013
Operation
Air carrier
Aircraft
N121UA
Make and model
Boeing 747422
Aircraft serial
29167
Aircraft time
60,344 hours, 7,001 cycles
Engine
Pwa PW4056
System (JASC)
3244 · Tire
Part
Tire
Condition
Worn
Location
Landing Gear
Stage of operation
IN
How discovered
O
Nature of condition
E
Precautionary procedure
O

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

What was found

VERY STRONG VIBRATION ON GEAR RETRACTION IN NOSE. MAJOR VIBRATION OF MCP MORE THAN NORMAL. REPLACED LT TIRE ASSEMBLY IAW AMM, TIRE FOUND WORN. INSPECTED NOSE WHEEL SNUBBER PADS & FOUND TO BE SERVICEABLE.