Service difficulty report · Frame · Boeing 7377H4

Difficulty date
November 6, 2023
Submitted
December 13, 2023
Operation
Air carrier
Aircraft
N454WN
Make and model
Boeing 7377H4
Aircraft serial
29851
Aircraft time
64,962 hours, 38,713 cycles
Part
Frame
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

CRACK ON FRAME LOCATED BS 747 BTW STR 8L TO STR 9L AT PASSENGER CABIN 2023-689259<[01] TOOL USED P/N: NORTEC 500D; S/N: N500X1693P030456; CAL DUE: 12-MAR-24.;[02] VERIFIED CRACK ON FRAME BS 747 BTW STR 8L TO STR 9L BY HFEC INSPECTION IAW NDT PART 6; 51-00-00 PROCEDURE 16 AND CRACK NOT FOUND RESTORED TO NORMAL CONDITION. REFER TO INDIVIDUAL SIGN OFF BELOW.;[03] TASK CARD COMPLETED <BR>VERIFIED CRACK ON FRAME BS 747 BTW STR 8L TO STR 9L BY HFEC INSPECTION IAW NDT PART 6; 51-00-00 PROCEDURE 16 AND CRACK NOT FOUND RESTORED TO NORMAL CONDITION. REFER TO INDIVIDUAL SIGN OFF BELOW.

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