Service difficulty report · Rib · Boeing 7377Q8

Difficulty date
February 4, 2023
Submitted
March 2, 2023
Operation
Air carrier
Aircraft
N7853B
Make and model
Boeing 7377Q8
Aircraft serial
30707
Aircraft time
60,009 hours, 39,704 cycles
Part
Rib
Condition
Cracked
Location
Zn 300 Stabilize
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 INSPAR RIB LOWER FLANGE AT STAB STA 147.90 AND 25 INCH OF FRONT SPAR AT RT HORIZONTAL STABILIZER 2023-109444<[01] TOOL USED EDDY CURRENT EQUIPMENT P/N: NORTEC 600D; S/N: 220272712; DUE DATE: 17-DEC-23.;[02] TOOL USED: EDDY CURRENT EQUIPMENT P/N: NORTEC 600D; S/N: 210138003; DUE DATE: 22-FEB-23.;[03] PERFORMED PERMANENT REPAIR ON INSPAR RIB LOWER FLANGE AT STAB STA 147.90 AND 25 INCH OF FRONT SPAR AT RT HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-09-2R-4 REPAIR 4; FIGURE 202 SHEET 1 DETAIL A.<BR>SEE INDIVIDUAL SIGNOFF BELOW;[04] PERFORMED PERMANENT REPAIR ON INSPAR RIB LOWER FLANGE AT STAB STA 147.90 AND 25 INCH OF FRONT SPAR AT RT HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-09-2R-4 REPAIR 4; FIGURE 202 SHEET 1 DETAIL A. <BR>SEE INDIVIDUAL SIGNOFF BELOW<BR><BR>RII ACCOMPLISHED

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