Service difficulty report · Skin · Boeing 7377H4

Difficulty date
April 18, 2026
Submitted
May 11, 2026
Operation
Air carrier
Aircraft
N479WN
Make and model
Boeing 7377H4
Aircraft serial
33990
Aircraft time
71,547 hours, 43,324 cycles
Part
Skin
Condition
Cracked
Location
Zone 300
Stage of operation
IN
How discovered
V
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 LT HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 18 INCHES FROM FRONT SPAR INB SIDE OF RIB LENGTH APPROX= 0.750 INCHES. REPAIRED LOWER SKIN LOCATED AT LH HORIZONTAL STABILIZER LOWER SKIN BTW STA 203.10 TO STA 184.70. IAW SRM 55-10-01-2R REPAIR 11.

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