Service difficulty report · Frame · Boeing 737824

Difficulty date
December 21, 2021
Submitted
December 22, 2021
Operation
Air carrier
Aircraft
N77261
Make and model
Boeing 737824
Aircraft serial
31582
Aircraft time
66,404 hours, 22,636 cycles
Part
Frame
Part number
141A8800
Condition
Cracked
Location
L1 Window
Stage of operation
IN
How discovered
V
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

AVO9353 REV-A STEP B1-4 HFEC ACCOMPLISHED , L1 CRACK FOUND ( CRACK CONDITION #1 ) FIG12.1 FIG A. NO CRACK ON OUTER SURFACE, JUST ON WINDOW FRAME INNER EDGE AND ON THE INSIDE SURFACE OF FRAME, SEE ATTACHED PICTURE. VERIFIED FRAME SEPARATED AND CRACK CUT OUT REF AVO STEPS A&B. VERIFIED HARDWARE INSTALLATION AND SLIDING WINDOW OPERATION PER VERIFIED CORRECT KIT PART NUMBER FOR FOR L-1 WINDOW REPAIR PER CKS OK. OK TO REINSTALL SIDE POST FASTENERS PER STEP C FOR L-1 AVO STEP C OF L-1 WINDOW. AVO. WINDOW. PER A.V.O. ESC211217-0261-1B, STEPS A& B SEPARATED AND CUT COMPLIED WITH STEP C.C-D OF A.V.O ESC211217-0261-1B REINSTALLED THIS IS FOR A INSPECTION VERIFICATION ON WORKED PERFORMED ON THE VERIFIED BOEIG REPAIR KIT P/N 002A0003-233 FOR LEFT WINDOW FRAME WINDOW FRAME. PREVIOUSLY REMOVED FASTENERS AND VERIFIED WINDOW 2 DOES NOT MAKE PREVIOUS UPDATE, STEP C.C-D OF A.V.O. ESC211217-0261-1B CRACK AS IN A.V.O ESC211217-0261-1B CONTACT WITH FASTENERS. VERIFIED ALL STEPS ABOVE ARE COMPLIED. OK TO INSTALL REPAIR PARTS. VERIFIED STEPS D, SUB STEPS8 THRU 21 ARE COMPLY WITH , FIGURE 24 SHEETS 7&8.OK TO INSTALL ,LEFT HANFRAME PER ESC 211217-0261-1B. AS IN A.V.O ESC 211217-0261-1B, STEP D. COMPLIED WITH SUB-STEPS 8 THRU 21 OF FIGURE #21 SHEET 7 & 8, DRILLED AND COUNTERSUNK REPAIR DOUBLER AND TRIPLER. COUNTERBORED WINDOW FRAME, APPLIED ALODINE AND PRIMER, INSTALLED COUNTERSINK FILLER WASHERS. VERIFIED INSTALLATION OF 7 SCREWS AND 2 HI LOK''S I/B OF LH POST INSPECTED REF STEPS 22 T