Service difficulty report · Frame · Boeing 7377H4

Difficulty date
May 15, 2021
Submitted
June 16, 2021
Operation
Air carrier
Aircraft
N440LV
Make and model
Boeing 7377H4
Aircraft serial
29835
Aircraft time
60,603 hours, 35,703 cycles
Part
Frame
Condition
Cracked
Location
Bs 312 S5-6l
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 FRAME ON BS 312 BETWEEN STRINGER 5L TO STRINGER 6L AT FWD GALLEY AREA ; 2021-215624 / REPAIRED FRAME LOC ON BS 312 BETWEEN STRINGER 5L TO STRINGER 6L AT FWD GALLEY AREA IAW B737-700 SRM 53-1007-2R-1 REPAIR 1. THIS REPAIR IS CATEGORY B AND MUST BE RE-INSPECTED AT 50;000 TOTAL FLIGHT CYCLES OR 12;000 FLIGHT CYCLES AFTER REPAIR INSTALLATION; WHICHEVER IS LATER; WITH INTERVAL OF 12;000 FLIGHT CYCLES PERFORM HIGH FRECUENCY (HFEC) INSPECTION IAW 737 NDT PART 6; 51-00-00; PROCEDURE 4 OR 737 NDT PART 6; 51-00-00; PROCEDURE 23; COMPLETED RII INSPECTION;REPAIRED FRAME LOC ON BS 312 BETWEEN STRINGER 5L TO STRINGER 6L AT FWD GALLEY AREA IAW B737-700 SRM 53-1007-2R-1 REPAIR 1. THIS REPAIR IS CATEGORY B AND MUST BE RE-INSPECTED AT 50;000 TOTAL FLIGHT CYCLES OR 12;000 FLIGHT CYCLES AFTER REPAIR INSTALLATION; WHICHEVER IS LATER; WITH INTERVAL OF 12;000 FLIGHT CYCLES PERFORM HIGH FRECUENCY (HFEC) INSPECTION IAW 737 NDT PART 6; 51-00-00; PROCEDURE 4 OR 737 NDT PART 6; 51-00-00; PROCEDURE 23.;TOOL USED P/N: NORTEC 600D; S/N: 60009161631; DUE DATE: 01-DEC-21

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