Service difficulty report · Skin · Boeing 7377H4

Difficulty date
July 1, 2021
Submitted
August 12, 2021
Operation
Air carrier
Aircraft
N411WN
Make and model
Boeing 7377H4
Aircraft serial
29821
Aircraft time
66,572 hours, 39,411 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 INDICATION ON LT HORIZONTAL STABILIZER LOWER SKIN PANEL. LOCATED AT STA 193.90 AND 16 INCH. FROM THE FRONT SPAR. CRACK LENGTH = 0.75 INCH. APPROX. ; 2021-311490 / [01] TOOL USED PN: NORTEC500D; SN: N500X12101V022235; DUE DATE: 03 JUN 22.; [02] MADE REPAIR PART (DOUBLER; FILLER) LOC LT HORIZONTAL STABILIZER LOWER SKIN PANEL BTW STA 184.70 TO STA 203.10 IAW B 737-700 SRM 55-10-01-2R-11 REPAIR 11 STEP 4. G (1) TO (3) AND STEP 4.H TO M. FIGURE 204 DETAIL B; [03] REPAIRED LOWER SKIN OF HORIZONTAL STABILIZER STA193.90 AND 16 FROM THE FRONT SPAR ;I.A.W SRM B737-700 55-10-01-2R-11; [04] REPAIRED LOWER SKIN OF HORIZONTAL STABILIZER STA193.90 AND 16 FROM THE FRONT SPAR ;I.A.W B737-700 SRM 55-10-01-2R-11; COMPLETED RII INSPECTION

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