Service difficulty report · Rib · Boeing 747200

Difficulty date
August 13, 2007
Submitted
September 4, 2007
Operation
Air carrier
Aircraft
N521UP
Make and model
Boeing 747200
Aircraft serial
21944
Aircraft time
79,715 hours, 18,925 cycles
Part
Rib
Condition
Cracked
Location
Nr 2 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.

What was found

INSPECTION TYPE:C NR 2 PYLON REAR ENG MOUNT BULKHEAD ATTACHMENT UPPER LINK BEAM O/B AND I/B SIDE RIB ANGLE FOUND CRACKED (NAC STA 277-4) FWD SIDE (CRACK LENGTH 1 INCH APPROX). NR 2 PYLON REAR ENG MOUNT BULKHEAD ATTACHMENT UPPER LINK BEAM O/B AND I/B SIDE RIB ANGLE REPAIRED AS PER SRM 54-14-03 FIG 13.

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