Service difficulty report · Bulkhead · Boeing 737924ER

Difficulty date
October 28, 2019
Submitted
November 3, 2019
Operation
Air carrier
Aircraft
N27421
Make and model
Boeing 737924ER
Aircraft serial
37094
Aircraft time
38,815 hours, 13,341 cycles
Part
Bulkhead
Part number
111A1111
Condition
Cracked
Location
Lt Mlg Ww
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

LEFT WHEEL WELL VERICAL PRESSURE DECK WEB APPEARS TO BE CRACKED APPROX 1.0 LONG IDT - NEED TO VERIFY SUSPECT CRACK. LEFT WHEEL WELL VERICAL PRESSURE DECK WEB HAS A CRACK APPROX 1.0 LONG. PERFORMED NDT SURFACE INSPECTION PER 737 NDT MANUAL PART 6 51-00-00 PROC. 23. ACCESS TO CRACK AT LBL 43.0 AND STOP DRILLED ENDS OF CRACK. REQUEST Q/C PERFORM STEP 4. C. HFEC OF STOP DRILL HOLES. COMPLIED WITH SRM 57-10-10 REPAIR 4 STEPS 4. A. - B. GAINED DRILL HOLES. NO ADDITIONAL CRACKS NOTED. COMPLIED WITH SRM 57-10-10 REPAIR 4.C, PERFORM HFEC OF STOP COMPLIED WITH SRM 57-10-10 REPAIR 4 STEP 4.C, PERFORM HFEC OF REF.) STOP DRILL HOLES. NO ADDITIONAL CRACKS NOTED.( UPDATED THE SRM BETWEEN STOP DRILLED ENDS OF CRACK. REQUEST Q/C PERFORM STEP 4. E. HFEC INSPECTION OF ANY TRIMMED EDGE. COMPLIED WITH SRM 57-10-10 REPAIR 4 STEP 4. D. CUT A SLOT COMPLIED WITH SRM 57-10-10 REPAIR 4 STEP 4.E, PERFORMED NDT PORTION OF STEP 4. E. "HFEC INSPECTION OF ANY TRIMMED EDGE NO CRACKS NOTED."NEED TO MAKE A O.040 LN. INSURANCE CUT OF THE TRIMOUT . TRIMOUT AREA. CRACKS NOTED."NEED TO MAKE A 0.040 IN. INSURANCE CUT OF THE PORTION OF STEP 4. E. "HFEC INSPECTION OF ANY TRIMMED EDGE NO COMPLIED WITH SRM 57-10-10 REPAIR 4 STEP 4.E, PERFORMED NDT PERFORMED INSURANCE CUT AND VERIFIED MATERIAL FOR REPAIR DOUBLER PER SRM 57-10-10 REPAIR 4 PART 4.E AND TABLE 201 AS 2024T3 .100" CLAD P.O.# 8369903 FABRICATED REPAIR DOUBLER PER SRM 57-10-10 REPAIR 4 PART 4.F FABRICATION OF REPAIR DOUBLER REF SRM 57-10-10 REPAIR 4 PART 4.E