Service difficulty report · Skin · Boeing 7377H4

Difficulty date
February 4, 2022
Submitted
March 7, 2022
Operation
Air carrier
Aircraft
N235WN
Make and model
Boeing 7377H4
Aircraft serial
34630
Aircraft time
53,482 hours, 32,044 cycles
Part
Skin
Condition
Cracked
Location
L/H Horiz. Stab.
Stage of operation
UK
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 LEFT HORIZONTAL STAB LOWER SKIN HSS 193.90, I/B ROW 9 CRACK :0.75'. CUT OUT DAMAGED AREA AT LT HORIZ. STAB. LOWER SKIN STA 193.90 (2 PLACES) 17' AND 24' FROM FWD EDGE PER B737-700 SRM 55-10-01-2R-11 FIG. 204. 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 WITHIN REPAIR AREA IAW NDTM PART 6; 51-00-00; PROCEDURE 16. NO CRACKS. FABRICATED FILLERS (2EA) IAW SRM 55-10-01-2R-11 FIG. 204. FABRICATION DOUBLER REPAIR IAW SRM 55-10-01-2R-11 FIG. 204

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