Service difficulty report · Inlet · Boeing 74747UF

Difficulty date
May 17, 2011
Submitted
May 18, 2011
Operation
Air carrier
Aircraft
N498MC
Make and model
Boeing 74747UF
Aircraft serial
29259
Aircraft time
50,864 hours, 7,750 cycles
Part
Inlet
Condition
Eroded
Location
Nr 3 Nacelle
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 WALK-AROUND INSP, MX FOUND THE NR 3 RT FAN COWL L/E WITH EROSION DAMAGE, MEASURING 0.350 IN. WIDE X 1.5 FT. LONG (REF FIG 1). THE DAMAGE IS BEYOND THE ALLOWABLE DAMAGE LIMITS IAW SRM 54-25-01 (ALLOWABLE DAMAGE 1). (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 2,000 FH (FLIGHT HOURS) AFTER PART 1.)

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