Service difficulty report · Doubler · Boeing 747243B

Difficulty date
October 17, 2010
Submitted
October 18, 2010
Operation
Air carrier
Aircraft
N540MC
Make and model
Boeing 747243B
Aircraft serial
22508
Aircraft time
107,948 hours, 19,016 cycles
Engine
Ge CF650*
Part
Doubler
Condition
Cracked
Location
Fuselage
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

DURING MX WALKAROUND, MX FOUND THE MAIN DECK - MDSCD AREA - BS1910 ROLL OUT GUIDE - DOUBLER CRACKED (REF FIG 1). THE DAMAGE EXCEEDS THE ALLOWABLE LIMITS IAW AMM 25-58-00. DISPOSITION WAS MADE TO PERFORM A TIME LIMITED REPAIR AS DESCRIBED IN PART 1 WORK INSTRUCTIONS, DVI INSPECTIONS AFTER EVERY 5 FLIGHT CYCLES UNTIL ACCOMPLISHMENT OF PERMANENT REPAIR PRIOR TO THE ACCUMULATION OF 1,000 FH (FLIGHT HOURS) AFTER PART 1.