Service difficulty report · Skin · Boeing 7377H4

Difficulty date
June 16, 2021
Submitted
July 14, 2021
Operation
Air carrier
Aircraft
N226WN
Make and model
Boeing 7377H4
Aircraft serial
32494
Aircraft time
53,110 hours, 31,655 cycles
Part
Skin
Condition
Cracked
Location
Horizontal Stab
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

WHILE ACCOMPLISHING HFEC INSPECTION; FOUND 1 EA CRACK ON R/H HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 184.70 RIB 4 IN. AFT OF THE DRAIN HOLE; AREA MARKED ; / [01] REMOVED PANEL 341BZ AT R/H STAB FRONT SIDE IAW SRM 51-42-02; [02] TRIMMED OUT THE DAMAGED PART AT R/H HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 184.70 RIB 4 IN. AFT OF THE DRAIN HOLE DIMENSIONS L=1.6 '<BR> W= 0.8' IAW SRM 51-10-02; [03] VERIFIED DAMAGE REMOVED AT RH HORIZONTAL STAB LOWER IN SPAR SKIN STATION 184.70 IAW SRM 51-10-02<BR><BR>NO OTHER DEFECTS NOTED.; [04] HFEC REQUEST AT THE EDGES OF THE CUT OUT TO ENSURE NO CRACKS EXIST.; [05] ET INSPECTED CUT EDGE IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23; NO CRACKS NOTED.<BR><BR>CAL ID IS000450 N500D; [06] REMOVED AFT O/B DOUBLER AT R/H HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 175 IAW SRM 51-42-02. [11] DAMAGE REPAIRED PER EA 21-155-01748. REPETITIVE INSPECTION PROGRAM DEFINED IN EA 155-01748-INSP; [12] VERIFIED DAMAGE REPAIRED PER EA 21-155-01748. REPETITIVE INSPECTION PROGRAM DEFINED IN EA 155-01748-INSP

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