Service difficulty report · Skin · Boeing 7377H4

Difficulty date
July 31, 2020
Submitted
August 3, 2020
Operation
Air carrier
Aircraft
N285WN
Make and model
Boeing 7377H4
Aircraft serial
32536
Aircraft time
44,446 hours, 26,608 cycles
Part
Skin
Condition
Delaminated
Location
Rt Wing Te Flap
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

RIGHT WING AFT OUTBOARD FLAP UPPER SURFACE DELAMINATED 3' OUTBOARD OF INBOARD EDGE; 3' UP FROM TRAILING EDGE. DAMAGE MEASURES 1.7 X 3' / RIGHT WING AFT OUTBOARD FLAP UPPER SURFACE DELAMINATED 3' OUTBOARD OF INBOARD EDGE; 3' UP FROM TRAILING EDGE. DAMAGE MEASURES1.7 X 3'. PER SRM 57-53-01-1A-5; APPLIED SPEED TAPE TO DISBONDED AREA. DETAILED INSPECTION OF THE DAMAGED AREA AND SPEED TAPE REQUIRED AT 300 FLIGHT HOUR INTERVAL IAW 51-00-06. DO A DETAILED INSPECTION OF THE SURROUNDING FASTENERS FOR CRACK OR SIGNS OF PULLED FASTENERS AT 300 FLIGHT HOUR INTERVALS. TAP TEST REQUIRED OF THE EDGE OF THE DAMAGED AREA; AND 5.0 IN. PAST THE DAMAGED AREA AT 300 FLIGHT HOUR INTERVAL TO MAKE SURE THE DAMAGE HAS NOT BECOME LARGER. REFER TO 737 NDT PART 1 ; 51-50-01. REPLACE THE TAPE IF IT IS DAMAGED. IF THE DAMAGE BECOMES LARGER; DO A PERMANENT REPAIR BEFORE THE NEXT FLIGHT. DO A PERMANENT REPAIR WITHIN 24 MONTHS (730 DAYS) FROM THE TIME THE DAMAGE WAS FOUND.

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