Service difficulty report · Hub · Boeing 737*

Difficulty date
October 20, 2021
Submitted
October 27, 2021
Operation
Air carrier
Aircraft
N825NN
Make and model
Boeing 737*
Aircraft serial
31087
Aircraft time
35,458 hours, 14,472 cycles
Engine
CFM567B
Engine time
35,458 hours, 4,472 cycles
Part
Hub
Condition
Damaged
Location
Zone 400 - Nac/P
Component
Engine · CFM567B
Component part number
9324M60G10
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

AIRCRAFT WAS GROUNDED: DURING THE ACCOMPLISHMENT OF THE #1 ENGINE FAN BLADE LUBE MAINTENANCE REPORTED DAMAGE TO THE FAN HUB ON HUB POST #1 WITH A DEPTH OF 0.011 INCHES AND HUB POST 22 WITH A DEPTH OF 0.012 INCHES. BOTH HUB POST ARE DAMAGED IN AREA D AND ARE OUTSIDE THE ALLOWABLE LIMITS. **SUPPLEMENTAL REPORT FOR AALA202110216407: REPLACED ENGINE PER TASK CARD 08L40072003** (CLOSED)