Service difficulty report · Pressure Web · Boeing 737824

Difficulty date
April 6, 2021
Submitted
April 7, 2021
Operation
Air carrier
Aircraft
N33294
Make and model
Boeing 737824
Aircraft serial
34000
Aircraft time
47,917 hours, 17,077 cycles
Part
Pressure Web
Part number
111A1111
Condition
Cracked
Location
Bs 1016
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

2EA CRACKS FOUND AT EXTERNAL CENTER WING REAR SPAR VERTICAL PRESSURE WEB CRACK NO.1 LOCATED BETWEEN LBL 45.64 TO LBL 40.00 LENGTH OF CRACK APPROX 1IN. CRACK NO.2 LOCATED BETWEEN LBL 31.83 TO LBL 24.92 LENGTH OF CRACK APPROX .400IN REF AAR N/R 9614270 REAPAIRED CENTER WING REAR SPARE VERTICAL PRESSURE WEB BETWEEN L BL 15.65 ANDLBL 45.64 STA 663 PER B737-800 SRM 57-10-10 REPAIR 3 ALTERNATIVE 3 FIG 205 THIS IS A CATEGORY "B" REPAIR. SUPPLEMENTAL INSPECTION PER B737-800 SRM 57-10-10 REPAIR 3 PARAGRAPH 7C TABLE 206. S AND REPEAT INTERVALS OF 36000 CYCLES. SUPPLEMENTAL INSPECTION REQUIRTED IAW BOEING 737SRM 57-10-10 REP AIR 3 PARAGRAPH 7C TABLE 206. HEFC/LEFC REQUIRED AT 832538 CYCLE CYCLES THEREAFTER, PERFORM LFEC AND HFEC INSPECTIONS IAW SRM 57-10-10 REPAIR 3 TBL 206 FOR CAT B ALTERNATIVE 3 REPAIR CORRECTION AFTER 56000 CYCLES(PTC 73,077) AND THEN EVERY 36,000 TOMC-APPROVAL FROM SC1ELBYC COMMENT RECORDS UPDATE CORRECTION: SHOULD STATE" AT OR BEFORE 56000 CYCLES(PTC 73,077) AND THEN EVERY 36,000 CYCLES THEREAFTER, PERFORM LFEC AND HFEC INSPECTIONS IAW SRM 57-10-10 REPAIR 3 TBL 206 FOR CAT B ALTERNATIVE 3 REPAIR.