Service difficulty report · Skin · Boeing 7377H4

Difficulty date
November 27, 2021
Submitted
December 27, 2021
Operation
Air carrier
Aircraft
N455WN
Make and model
Boeing 7377H4
Aircraft serial
32462
Aircraft time
58,698 hours, 34,771 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

RIGHT HAND HORIZONTAL STABILIZER LOWER SURFACE SKIN HAS A CRACKING INDICATION LOCATED APPROXIMATELY 16.5 INCHES FORWARD OF REAR AND APPROXIMATELY 4.5 INCHES OUTBOARD OF SKIN SPLICE. (MARKED IN RED) ; RIGHT HAND HORIZONTAL STABILIZER LOWER SURFACE SKIN HAS A CRACKING INDICATION LOCATED APPROXIMATELY 16.5 INCHES FORWARD OF REAR AND APPROXIMATELY 4.5 INCHES OUTBOARD OF REPAIR SKIN SPLICE. (MARKED IN RED) / [01] REMOVED PANEL 341BZ AT FRONT OF R/H HORIZONTAL STABILIZER IAW SRM 51-40-02.; [02] TRIMMED OUT THE DAMAGED PART OF THE SKIN AT R/H HORIZ. STAB LOWER SURFACE AT DISCREPANCY AREA; CUT OUT DIMENSIONS 1.5' X 0.8' IAW SRM 51-10-02.; [03] REQUEST HFEC INSPECT FOR NO CRACKS ON DAMAGE CUTOUT PER SRM 51-10-02; STEP 5.C.; [04] EDDY CURRENT INSPECTED EDGE OF CUT-OUT AND SURROUNDING AREA IN ACCORDANCE WITH 737 NDT MANUAL PART 6; 51-00-00 PROCEDURE 23. NO CRACKS FOUND. <BR><BR>TOOL I.D. ATS1465 (OLYMPUS NORTEC 600); [05] QC VERIFY DAMAGE REMOVAL; [06] VERIFIED DAMAGE REMOVED; [07] REPAIRED PER EA 21-155-03646.; [08] VERIFIED CORRECTIVE ACTION 7.

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