Service difficulty report · Skin Panel · Boeing 7377H4

Difficulty date
May 29, 2022
Submitted
July 11, 2022
Operation
Air carrier
Aircraft
N481WN
Make and model
Boeing 7377H4
Aircraft serial
29853
Aircraft time
60,481 hours, 35,778 cycles
Part
Skin Panel
Condition
Cracked
Location
L/H Horiz. 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 FOUND ON LT HORIZONTAL STABILIZER LOWER SKIN PANEL. LOCATED AT STAB STA 193.90 AND 16 INCH. FROM FRONT SPAR. CRACK LENGTH = 0.500 INCH. APPROX. 2022-267968 / [01] ET TOOL USED: PN: NORTEC 600D; SN:210138203; DUE DATE: 11-APR-23;[02] TOOL USED EDDY CURRENT INSTRUMENT P/N NORTEC500D S/N N500X11290U021704 DUE DATE 01-FEB-23.;[03] REPAIRED LH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN LOCATED AT STAB STA 193.90 AND 16 INCH. FROM FRONT SPAR. IAW B737 700 SRM 55-10-01-2R-11 REPAIR 11. SEE INDIVIDUAL SING-OFF BELOW;[04] REPAIRED LH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN LOCATED AT STAB STA 193.90 AND 16 INCH. FROM FRONT SPAR. IAW B737 700 SRM 55-10-01-2R-11 REPAIR 11.RII. SEE INDIVIDUAL SING-OFF BELOW

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