Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
September 8, 2023
Submitted
October 6, 2023
Operation
Air carrier
Aircraft
N906WN
Make and model
Boeing 7377H4
Aircraft serial
36887
Aircraft time
51,081 hours, 29,796 cycles
Part
Stringer
Part number
UNKNOWN
Condition
Cracked
Location
Zn 100 Fus Lower
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

AREA AFT OF FWD CARGO BAY HAS A CRACKED STR AT THE AFT FASTENER; STR 26L; BS 520+19; WL 152<[01] VERIFIED APPLICABILITY PER REF SRM 53-00-03-2R-1;[02] VERIFIED NDT HFEC INSPECTION COMPLETED IN SUB-STEP 2; COMPLETES THE REQUIREMENTS OF SRM SRM 53-00-03-2R-1 STEP 4.C. (737 NDTM PART 6 CHAPTER 51-00-00 PROCEDURE 23 IS THE SAME AS FIGURE 4) OK TO INSTALL REPAIR PARTS.;[03] REMOVED DAMAGED AREA OF STRINGER 26L AND INSTALLED NEW STRINGER SECTION AND SPLICE AT BS 500D+8 TO BS 540 STR 26L IAW SRM 53-00-03-2R-1-A01015.;[04] VERIFIED CORRECTIVE ACTION #3.<BR>VERIFIED MEASUREMENTS.

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