Service difficulty report · Vapor Barrier · Boeing 7377H4

Difficulty date
September 26, 2023
Submitted
September 26, 2023
Operation
Air carrier
Aircraft
N288WN
Make and model
Boeing 7377H4
Aircraft serial
36611
Aircraft time
52,214 hours, 31,459 cycles
Part
Vapor Barrier
Part number
NOTREPORTED
Condition
Cracked
Location
Bs 663
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

FOUND CRACK EXTENDED 18 INCHES AT LEFT WHEEL WELL VAPOR BARRIER LBL 31.83 WING CENTER SECTION SPAR. PERFORMED PULSE-ECHO INSPECTION OF LAMINATED STRUCTURES TO DETECT INTERPLY DELAMINATIONS WITH ACCESS TO ONE SIDE OF PART ONLY ON THE PERMANENT REPAIR AFTER IT WAS ACCOMPLISHED AT THE FORWARD SIDE OF LT MLG WW VAPOR BARRIER LBL 31.83 IAW NDT MANUAL; PART 4; 51-00-01. NO DEFECTS NOTED. INSTALLED CATEGORY A REPAIR ON LOWER 6' OF DAMAGE AREA PER SRM 51-70-04-2R-10; REPAIR 10. INSTALLED INTERIM REPAIR ON REMAINING 12' CRACK PER SRM 57-10-10-1A-2; ALLOWABLE DAMAGE 2.

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