What was found
NR 4 ENGINE REAR MOUNT THRUST LINK FWD END LUG BORE LOWER AREA WITH CRACK INDICATION ( > 126 PERCENT FSH ) WHICH EXCEED LIMIT. NR 4 ENGINE REAR MOUNT THRUST LINK REPLACED PER 747 MM 71-21-03, REF EO NR B747-7120-22596-C APPENDIX I.
- Difficulty date
- December 6, 2005
- Submitted
- December 7, 2005
- Operation
- Air carrier
- Aircraft
- N523UP
- Make and model
- Boeing 747283B
- Aircraft serial
- 22381
- Aircraft time
- 75,840 hours, 15,610 cycles
- System (JASC)
- 7120 · Engine Mount Section
- Part
- Link
- Part number
- 65B903604
- Condition
- Cracked
- Location
- Nr 4 Mount
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.