Service difficulty report · Skin · Boeing 7377H4

Difficulty date
May 6, 2025
Submitted
June 11, 2025
Operation
Air carrier
Aircraft
N900WN
Make and model
Boeing 7377H4
Aircraft serial
32544
Aircraft time
57,299 hours, 34,643 cycles
Part
Skin
Condition
Cracked
Location
Zone 300
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 ON LH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 RIB; 17 INCHES FROM FRONT SPAR; INB SIDE OF RIB LENGTH APPROX= 1.225 INCHES. 2025-309239<[01] EQUIPMENT P/N PHASEC 3D; S/N 800YBRK; DUE DATE 16-JUL-25 WAS USED ON STEP 6;[02] EQUIPMENT P/N PHASEC 3D; S/N 800YBRK; DUE DATE 16-JUL-25 WAS USED ON STEP 8;[03] PERFORMED REPAIR ON LH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 RIB; 17 INCHES FROM FRONT SPAR; INB SIDE OF RIB I.A.W B737-700 SRM 55-10-01-2R-11 REPAIR 11; THIS REPAIR COMPLY WITH AERODYNAMIC LIMITS AND ELEVATOR POWER OFF FLIGHT TEST IS NOT NECESSARY; SEE INDIVIDUAL SIGN-OFF BELOW;[04] CERTIFIED WORK PERFORMED AS RII<BR>PERFORMED REPAIR ON LH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 RIB; 17 INCHES FROM FRONT SPAR; INB SIDE OF RIB I.A.W B737-700 SRM 55-10-01-2R-11 REPAIR 11; THIS REPAIR COMPLY WITH AERODYNAMIC LIMITS AND ELEVATOR POWER OFF FLIGHT TEST IS NOT NECESSARY; SEE INDIVIDUAL SIGN-OFF BELOW

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