What was found
NR 3 PYLON REAR ENGINE MOUNT BULKHEAD HAS ALL 4 FRAMES CRACK DAMAGE BEYOND LIMITS OF S/B 747-54A2202 FIG 12. REPLACED ALL 4 FRAMES PER B747 SRM 51-30-05 PG 6-9 AND 51-30-02 PG 8-9 ITEM 7D AND SB 747-54A2202 FIG 12.
- Difficulty date
- February 9, 2011
- Submitted
- February 10, 2011
- Operation
- Air carrier
- Aircraft
- N471EV
- Make and model
- Boeing 747273C
- Aircraft serial
- 20651
- Aircraft time
- 104,941 hours, 24,717 cycles
- System (JASC)
- 5411 · Nacelle/Pylon, Frame/Spar/Rib
- Part
- Frame
- Condition
- Cracked
- Location
- Nr 3 Pylon
- 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.