Service difficulty report · Doubler · Boeing 747412F

Difficulty date
May 27, 2022
Submitted
May 31, 2022
Operation
Air carrier
Aircraft
N489MC
Make and model
Boeing 747412F
Aircraft serial
26553
Aircraft time
84,432 hours, 13,881 cycles
Part
Doubler
Condition
Cracked
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

EO 4453A821-1 & 4 FUSELAGE SKIN NOSE WHEEL WELL FORWARD CORNER DOUBLER INSPECTION AND MODIFICATE (SB 747-53A2851) L/H FASTENERS & WASHERS DEVIATIONS DOUBLER S.E.M AND R/H FASTENERS WASHERS DEVIATIONS FASTENER HOLE CRACK (1EA), L/R DOUBLER INSTALLED AS PER BOEING DWG 624U0073 SHT 1 & 2 AND RI NO: RI-53-00-15647 REV.A