Service difficulty report · Nacelle · Boeing 7472D7B

Difficulty date
November 10, 2010
Submitted
November 10, 2010
Operation
Air carrier
Aircraft
N522MC
Make and model
Boeing 7472D7B
Aircraft serial
21783
Aircraft time
106,920 hours, 21,423 cycles
Engine
Ge CF650*
Part
Nacelle
Condition
Cracked
Location
Nr 1
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

THE PURPOSE OF THIS EO 4771A096 & NBSP; IS TO DOCUMENT A MAJOR REPAIR. DURING WALK-AROUND INSPECTION AT RMS, MX FOUND THE NR 1 RT FAN COWL WITH DAMAGE; CRACK MEASURING 6.0 IN. LONG (REF FIG 1). THE DAMAGE IS BEYOND THE ALLOWABLE DAMAGE LIMITS IAW SRM 51-40-06, FIG 2, SHEET 2 (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 1,000 FH (FLIGHT HOURS) AFTER PART 1.)

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