Service difficulty report · Axle · Boeing 757222

Difficulty date
May 12, 2000
Submitted
October 4, 2000
Operation
Air carrier
Aircraft
N540UA
Make and model
Boeing 757222
Aircraft serial
25252
Aircraft time
30,277 hours, 11,130 cycles
Engine
Pwa PW2037
Part
Axle
Part number
161N16253
Part serial
366DC57
Condition
Fractured
Location
Rt Mlg
Part time
11,000 cycles
Stage of operation
IN
How discovered
V
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

THE RT MLG WHEEL TRUCK AFT AXEL WAS FOUND BROKEN. *S/D* NR 7 AXLE WAS FOUND COMPLETELY FRACTURED APPROX 18 INCHES FROM AXLE END. CAUSE IS DUE TO STRESS CORROSION CRACKING. THERE MAYBE A POSSIBLE CHROME PLATING ADHESION ISSUE RELEVANT TO OTHER AXLES THAT HAVE SIMILAR TYPE STRESS CORROSION. BOEING HAS BEEN INCLUDED IN THE ANALYSIS PROCESS.