Service difficulty report · Frame · Boeing 7377H4

Difficulty date
July 15, 2021
Submitted
August 18, 2021
Operation
Air carrier
Aircraft
N444WN
Make and model
Boeing 7377H4
Aircraft serial
29839
Aircraft time
61,121 hours, 35,983 cycles
Part
Frame
Condition
Cracked
Location
Bs 312 S5l
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 IN RADIUS OF BS312 FRAME ABOVE STR5L ; / [01] TRIMMED OUT DAMAGE IN RADIUS OF BS 312 FRAME ABOVE STR 5L PER SRM 51-10-02-0G-0. REMOVED 0.30' FROM EDGE OF FRAME. FOUND TO BE OUT OF LIMITS PER SRM 53-00-07-1A-1.; [02] VERIFIED CORRECTIVE ACTION #1<BR> FOUND TO BE OUT OF LIMITS PER SRM 53-00-07; [03] REQUEST NDI TO PERFORM HFEC INSPECTION OF DAMAGE TRIM OUT EDGE IN RADIUS OF BS 312 FRAME ABOVE STR 5L TO VERIFY CRACK FREE CONDITION.; [04] HFEC INSPECTED TRIMMED EDGE OF DAMAGE CUTOUT PER 737NDT PART 6 51-00-00 PROCEDURE 23. NO CRACKS FOUND. CAL ID IS000450 S/N N500D000M120071; [05] ACCOMPLISHED STEP 1-5 OF 21-153-02110-WIP1; [06] INSPECTED AND VERIFIED STEP 1-5 OF 21-153-02110-WIP1; [07] ACCOMPLISHED STEP 6-10 OF 21-153-02110-WIP1; [08] VERIFIED ACTION 7; [09] REPAIRED CRACK IN RADIUS OF BS 312 FRAME ABOVE STR 5L PER EA 21-153-02110 (N444WN - ATS(PAE) - REPAIR - BS 312 FRAME INNER CHORD BETWEEN S-5L AND S-6L) [TTG8Q0064927].; [10] VERIFIED CORRECTIVE ACTION 9 PER EA 21-153-02110 (N444WN - ATS(PAE) - REPAIR - BS 312 FRAME INNER CHORD BETWEEN S-5L AND S-6L) [TTG8Q0064927].

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