Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
June 27, 2021
Submitted
August 5, 2021
Operation
Air carrier
Aircraft
N750SA
Make and model
Boeing 7377H4
Aircraft serial
29802
Aircraft time
75,691 hours, 44,551 cycles
Part
Stringer
Condition
Cracked
Location
Bs 536 S23r
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

FCB STR-23R CRACKED IN DISTRIBUTION BAY AT BS 536 (MARKED) ; / [01] EVALUATED CRACK MEASUREMENTS ON FCB STRINGER 23R BS 536. STRINGER DAMAGE FOUND TO BE OUT OF LIMITS I.A.W SRM 53-00-03-1A-1 FIGURE 103; DETAIL A.; [02] VERIFIED; EVALUATED CRACK MEASUREMENTS ON FCB STRINGER 23R BS 536. STRINGER DAMAGE FOUND TO BE OUT OF LIMITS I.A.W SRM 53-00-03-1A-1 FIGURE 103; DETAIL A.; [03] CLEANED AREA IAW AMM 20-60-02-100-801; [04] CLEANED STR 23R BS 536-539 IAW AMM 20-60-02-100-801; [05] REQUEST NDI TO VERIFY CRACK LOCATION; [06] HFEC INSPECTED STRINGER 23R AT BS 532-536 AROUND FASTENERS AND FLANGES PER 737NDT PART 6 51-00-00 PROCEDURE 23. NO CRACKS FOUND. CAL ID IS000450 S/N N500D000M120071; [07] AFTER CLEANING STRINGER 23R BS 536 AND NDI WAS ACCOMPLISHED NO CRACKS WERE FOUND IN STRINGER; [08] VERIFIED; AFTER CLEANING STRINGER 23R BS 536 AND NDI WAS ACCOMPLISHED NO CRACKS WERE FOUND IN STRINGER

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