Service difficulty report · Skin · Boeing 747230B

Difficulty date
November 15, 2004
Submitted
November 24, 2004
Operation
Air carrier
Aircraft
N512MC
Make and model
Boeing 747230B
Aircraft serial
21220
Engine
Ge CF650E2
Part
Skin
Part number
65B8904938
Condition
Cracked
Location
Nr 2 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.

What was found

DURING SCHEDULED MAINTENANCE INSPECTION, THE BULKHEAD UPPER ASSY FORWARD ANGLE FRAME OF THE NR 2 PYLON LT AND RT SIDE WERE FOUND CRACKED. FABRICATED AND INSTALLED REPAIR ANGLES ON THE FORWARD AND AFT FRAMES IN THE REPAIR AREA. INSTALLED THE REPAIR ANGLES BY PICKING-UP ALL EXISTING FASTENER LOCATIONS AFFECTED BY THE REPAIR PARTS WITH LOCK FASTENERS. CONDUCT REPEAT DETAILED VISUAL INSPECTION OF THE FORWARD FRAMES AT THE REPAIRS AND ADJACENT CHORD AREA EVERY C-CHECK OR 18 MONTHS WHICHEVER IS FIRST, FOR CRACK, LOOSE FASTENERS AND DAMAGE. EO TO BE ISSUED TO ACCOMPLISH INSPECTION AT 18 MONTH INTERVALS OR C-CHECK WHICH EVER IS FIRST.