Service difficulty report · Axle · Boeing 767322

Difficulty date
January 4, 2023
Submitted
January 6, 2023
Operation
Air carrier
Aircraft
N673UA
Make and model
Boeing 767322
Aircraft serial
29241
Aircraft time
81,120 hours, 16,715 cycles
System (JASC)
3242 · Brake
Part
Axle
Part number
26088115
Part serial
0597
Condition
Damaged
Location
2
Stage of operation
LD
How discovered
O
Nature of condition
M
Precautionary procedure
K

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

What was found

NO.2 WHEEL/BRAKE REPORTED HOT ON ARRIVAL TO LHR SCORING DAMAGE FOUND ON AXLE WHERE INNER WHEEL BEARING RACE DMG #5: SCORING. 1.321"X0.085", 0.002" DEEP. 0200 OCLOCK. DMG IAW AMM 32-45-01-404-027. PART 3 OF ECRA TO BE COMPLETED WITHIN SITS. SEE PHOTOS. SKETCH AND MEASUREMENTS IN PROGRESS #6: SCORING. 0.490"X0.025", 0.002" DEEP. 1200 OCLOCK. SEE PHOTO 2 CYCLES FOR LOCATIONS. AWAITING ECRA ECRA 3211-02697 PART 1 INTERIM REPAIR COMPLETED. BRAKE ASSEMBLY REPLACED IAW AMM 32-41-08-420-801-C1, WHEEL ASSEMBLY REPLACED APPROVED FOR 2 CYCLE DIP REF ECRA 3211-02697 TOMC-APPROVAL FROM SC1ELBYC COMMENT INSPECTION OF BRAKE ROD INSTALLATION PER AMM 32-41-08 AS PER REQUIREMENTS ON GMM 09-10-05. BRAKE INSTALLATION WAS DONE CORRECTLY AS PER AMM 32-41-08 WHEEL AND BRAKE ASSY REMOVED FROM AXLE REF AMM 32-41/45-00. AMM 05-51-17-212-001 WHEEL BEARING FAILURE INSP C/O. AS STATED DMG #1: CHIPPED CHROME AREA, 0.122"X0.040" 0.005", 0930 OCLOCK. COMPONENT TRANSACTION ADDED PARTS USED: 00-0609-3-7342,QTY SUSPECT INNER WHEEL BEARING OR RIM FAILURE. BRAKE TORQUE ROD WHEEL AND BRAKE DAMAGED AND REQUIRES REPLACEMENT, NO HEAT DAMAGE DMG #2: DENT/MARK IN CHROME, 0.1"X0.115", 0.003" DEEP. 0830 :1 1894037,QTY :1 1894046,QTY :1 REMOVED FOR ACCESS REF AXLE INSP FOR HEAT DAMAGE REF AMM NO VISABLE OCLOCK. DMG #3: SCORING, 1.357"X0.084", 0.003" DEEP. 0500 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1894046 SN OFF 0797 DISCOLOURATION OR BLISTERING INSIDE OR OUT OF AXLE DUE TO HEAT. OCLOCK. DMG #4: SCORING, 0.67"