Service difficulty report · Skin · Boeing 7377H4

Difficulty date
December 8, 2022
Submitted
January 4, 2023
Operation
Air carrier
Aircraft
N935WN
Make and model
Boeing 7377H4
Aircraft serial
36641
Aircraft time
44,804 hours, 27,025 cycles
Part
Skin
Condition
Cracked
Location
Horizontal Stab
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 ON THE LT HORIZONTAL STABILIZER LOWER SKIN, HSS 193.90, 9 INCHES AFT OF FORWARD SPAR, .5 INCH CRACK LENGTH. CUT OUT DAMAGE IAW SRM 55-10-01-2R-11, REPAIR 11. PERFORMED HFEC AT CUT OUT IAW NDTM, PART 6, 51-00-00, PROCEDURE 23. NO CRACKS. PERFORMED HFEC HOLE PROBE INSPECTION ON ALL REMOVED FASTENER LOCATIONS IAW NDTM PART 6, 51-00-00, PROCEDURE 16. NO CRACKS. PERFORMED HFEC COUNTERSINK INSPECTION ON ALL REMOVED FASTENER LOCATIONS IAW NDTM PART 6, 53-30-00, PROCEDURE 3. NO CRACKS. FABRICATED A DOUBLED AND FILLED REPAIR IAW 55-10-01-2R-11, REPAIR 11 AND SRM 51-40-05-0G-0. INSTALLED THE REPAIR IAW SRM 55-10-01-2R-11, REPAIR 11.

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