Service difficulty report · Skin · Boeing 7377H4

Difficulty date
June 9, 2023
Submitted
July 3, 2023
Operation
Air carrier
Aircraft
N942WN
Make and model
Boeing 7377H4
Aircraft serial
36648
Aircraft time
45,425 hours, 27,767 cycles
Part
Skin
Part number
UNKNOWN
Condition
Cracked
Location
Zn 300 Stabilize
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 LEFT HORIZONTAL STABILIZER LOWER SKIN AT STAB STA 193.90; 17' FROM FRONT SPAR ;I/B ROW. CRACK LENGTH: 1.468' CRACK FOUND AT LEFT HORIONTAL STABILIER LOWER SKIN AT STAB STA 193.90 17&#34; FROM FRONT SPAR I/B ROW. CRACK LENGTH: 1.468&#34;<[01] INSTALLED REPAIR AT LH HORIZONTAL STAB. LOWER SKIN STA 293.90; PER SRM 55-10-01-2R-11 AND SRM 51-40-02-0G--0;;[02] CORRECTION STEP 1; INSTALLED REPAIR AT LH HORIZONTAL STAB. LOWER SKIN STA 293.90; PER SRM 55-10-01-2R-11 AND SRM 51-40-02-0G-0; AND FINISH; PAINT TO BE DONE ON TTG8Q00LQ2KH;[03] RII....VERIFIED FINAL CORRECTIVE ACTION.;[04] CORRECTION STEPS 1 AND 2;INSTALLED REPAIR AT LH HORIZONTAL STAB. LOWER SKIN STA 293.90; PER SRM 55-10-01-2R-11 AND SRM 51-40-02-0G-0; AND FINISH; PAINT TO BE DONE ON TTG8Q00LQ2KH; THIS IS CATEGORY B REPAIR; INSPECTION TRESHOLD AT 56.000 TOTAL FLIGHT CYCLES AND INTERVAL DETAIL VISUAL INSPECTION AT 9.000 FLIGHT CYCLES;[05] RII....VERIFIED FINAL CORRECTIVE ACTION STEP 4.

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