What was found
DURING C-CHECK, WHILE ACCOMPLISHING ULTRASONIC INSPECTION OF NR 4 STRUT REAR ENGINE MOUNT THRUST LINKIAW 747 MM 71-21-03, THE FORWARD BORE HAD A CRACK INDICATION AT O/B LUG BORE EDGE.
- Difficulty date
- February 14, 2007
- Submitted
- February 19, 2007
- Operation
- Air carrier
- Aircraft
- N526UP
- Make and model
- Boeing 747212B
- Aircraft serial
- 21937
- Aircraft time
- 89,777 hours, 16,916 cycles
- System (JASC)
- 7120 · Engine Mount Section
- Part
- Mount
- Condition
- Cracked
- Location
- Nr 4 Engine
- Stage of operation
- IN
- How discovered
- U
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.