Service difficulty report · Skin · Boeing 7377H4

Difficulty date
January 9, 2023
Submitted
January 24, 2023
Operation
Air carrier
Aircraft
N793SA
Make and model
Boeing 7377H4
Aircraft serial
27888
Aircraft time
70,764 hours, 41,915 cycles
Part
Skin
Condition
Cracked
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

CRACK FOUND AT EXTERNAL LOWER SURFACE OF RH I/B AFT FLAP 19.5' FROM I/B EDGE AND 3.375' FROM T/E. CRACK CONFIRMED IAW NDTM PART 6; 51-00-00 PROCEDURE 23. CRACK LENGTH : 0.393'. CUT OUT DAMAGED AERA AT R\H I\B AFT FLAP ON LOWER SURFACE SIZE 1.5'X0.5' NO CORE DAMAGE FOUND WATER IAW SRM 51-70-10-2R-0 PARAGRAPH(7.A). PERFORMED DRY OUT ON DAMAGE AREA; FOUND NO WATER; FABRICATE FILLER AND DOUBLER CLEANED PARTS AND APPLIED ADHESIVE PRIMER. NO CORE DAMAGE IAW SRM 51-70-10-2R-4. PERFORMED HFEC AT CUT OUT AS PER NDTM PART 6; 51-00-00 PROCEDURE 23. NO CRACKS. REPAIRED DAMAGE AREA AT R/H LOWER SURFACE I/B AFT FLAP 19.5' FROM I/B EDGE AND 3.75' FROM T/E IAW SRM 51-70-10-2R-4. ACCOMPLISHED TAP TEST AT R/H I/B AFT FLAP LOWER SURFACE FOUND NO DELAMINATION IAW NTM 51-05-01.

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