Service difficulty report · Angle · Boeing 7377H4

Difficulty date
September 6, 2021
Submitted
April 27, 2022
Operation
Air carrier
Aircraft
N415WN
Make and model
Boeing 7377H4
Aircraft serial
29836
Aircraft time
66,271 hours, 39,040 cycles
Part
Angle
Condition
Cracked
Location
Bs 663
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

SUPPLEMENTAL INFORMATION: CRACK ON ANGLE LOC BS 663.75 BTW RBL 8 TO RBL 30 VAPOR BARRIER AREA ; 2021-369636 / [01] REMOVED ANGLE LOC BS 663.75 BTW RBL 8 TO RBL 30 VAPOR BARRIER AREA IAW SRM B737-700 51-40-02 DUE TO ALLOWABLE DAMAGE NOT FOUND ON SRM AND MUST BE REPLACED AND PERFORMED VISUAL INSPECTION ON ADJACENT AREA AND NOT FOUND MORE DAMAGE MEASURE OF CRACK IS L= 1.900 TOOL USED CALIPER P/N:700-113-10;S/N:0019287 DUE DATE:31/MAY/22; [02] STEP 1 COMPLETED.; [03] DRILLED HOLES ON NEW ANGLE LOC BS 663.75 BTW RBL 8 TO RBL 30 VAPOR BARRIER AREA. IAW B737-700 SRM 51-20-07. AND APPLIED PROTECTIVE TREATMENT ON HOLES OF NEW ANGLE IAW B737-700 SRM 51-20-01.; [04] OK TO INSTALL NEW ANGLE AND FASTENERS LOC BS 663.75 BTW RBL 8 TO RBL 30 VAPOR BARRIER AREA.; [05] COMPLETED STEP 3 AND 4. OK TO INSTALL GRANTED; [06] INSTALLED NEW ANGLE AND FASTENERS LOC BS 663.75 BTW RBL 8 TO RBL 30 VAPOR BARRIER ARE I.A.W B737-700 SRM 51-40-02 AND DRAWING 111A1001-42 REV. B:; [07] STEP 6 COMPLETED; [08] REPLACED NEW ANGLE (STIFFENERS) AND FASTENERS LOC BS 663.75 BTW RBL 8 TO RBL 30 VAPOR BARRIER IAW SRM B737-700 51-10-02 TEM 9 AND DRAWING 111A1000 REV:-; [09] JOB COMPLETED.

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