What was found
AD NR 4 PYLON REAR ENGINE MOUNT THRUST LINK FWD END LUG FOUND CRACK INDICATION EXCEEDED LIMIT. NR 4 PYLON REAR UPPER ENGINE MOUNT AFT THRUST LINK ASSY CHANGED AND INSTALLED IAW MM 71-21-03.
- Difficulty date
- October 23, 2005
- Submitted
- October 28, 2005
- Operation
- Air carrier
- Aircraft
- N681UP
- Make and model
- Boeing 747121
- Aircraft serial
- 19661
- Aircraft time
- 106,207 hours, 26,971 cycles
- Engine
- Pwa JT9D3
- System (JASC)
- 5410 · Nacelle/Pylon, Main Frame
- Part
- Link
- Part number
- 65B903604
- Part serial
- 8ET366
- Condition
- Cracked
- Location
- Nr 4 Pylon
- 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.