Service difficulty report · Web · Boeing 737724

Difficulty date
January 25, 2020
Submitted
February 2, 2020
Operation
Air carrier
Aircraft
N24729
Make and model
Boeing 737724
Aircraft serial
28945
Aircraft time
66,834 hours, 23,476 cycles
Part
Web
Part number
148A851058
Condition
Cracked
Location
Bs 1112-1121
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

LOWER HORZONTAL WEB LIGHTING HOLE HAS A HALF INCH CRACK BETWEEN STATION 1112 AND 1121 RIGHT HAND SIDE OUTBOARD CRACK MEASURES 0.5". REF AVO7943. PERFORMED STEP 1 OF OF AVO AND ROUTED OUT DAMAGE. ENSURE CRACK WAS REMOVED. REF AVO7943 STEP 2 NEED TO PERFORM HFEC AT EDGE OF TRIM OUT TO PERFORMED HFEC AS PER STEP 2 AT EDGE CUTOUT...NO CRACKS NOTED PERFORMED STEPS 2.A. AND 3 OF AVO7943. AVO 7943 REV A REPAIR REQUIRES MATERIAL VERIFICATION IAW STEP 5. FABRICATED 2 REPAIR STIFFENERS PER AVO7943 REV. A UPTO AND INCLU 0-41-02. READY FOR INSTALL. DING STEPS 6. WHICH INCLUDES 2 LAYER OF TYPE 1 PRIMER PER SOPM 2 MATERIAL VERIFICATION ACCOMPLISHED, REF AVO7943 REV A, STEP 5. MATERIAL 2024-T3. .063 THICK, PO# 83102700142 PER AVO AND VERIFIED TREAT AND PRIME OF REPAIR PARTS PER STEP 6 PER AVO 7943 STEP 4, ACCOMPLISHED INSPECTION OF STRUCTURE IN AREA OF CUTOUT, PER STEP 5 VERIFIED FABRICATION OF REPAIR PARTS COMPLETE INSTALLATION OF 2 STIFFENERS PER AVO 7943 REV. A. REQU IRE FINAL ECRA FOR COMPLETION. RII C/W. ALL STEPS C/W IN AVO 7943 REV A. APPLIED CIC, STEP 9 OF AVO 7943 REV A COMPLETE. OKAY TO CLOSE REQUIRED. AREA OK TO CLOSE. VERIFIED STEP 9 OF AVO7943 REV A COMPLETED. VISUALLY INSPECTED PERFORMED REPAIR PER ECRA 5380-01260, SEE ALL STEPS ABOVE FOR ALL WORK ACCOMPLISHED. 01260. RII INSPECTION COMPLETED.ALL STEPS COMPLETED AS PER ECRA 5380- WEB WAS REPAIR PER ECRA 5380-01260. SEE ALL ABOVE STEPS FOR ALL WORK PERFORMED. ACCOMPLISH PERMANENT REPAIR PER PART 3 WITHIN 4 MONTHS OR 500 FLIGH