Service difficulty report · Pressure Deck · Boeing 737724

Difficulty date
December 22, 2019
Submitted
January 6, 2020
Operation
Air carrier
Aircraft
N39726
Make and model
Boeing 737724
Aircraft serial
28796
Aircraft time
65,957 hours, 22,270 cycles
Part
Pressure Deck
Part number
111A11111
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

WING CENTER SECTION REAR SPAR VERTICAL PRESSURE DECK WEB FOUND C RACK AT LBL40-LBL45. CRACK AT CENTER SECTION REAR SPAR REPAIRED AS PER B737-700 SRM 5 7-10-10 REPAIR 3 FIG 204. CATAGORY B REAPIR. INITIATIND DIP TO ACCOMPLISH HFEC & LFEC INSPECTION WITH A THRESHOLD OF 56,000 CYCLES AFTER REPAIR INSTALLED AND THERE AFTE R RIR INSPECTION AT 36,000 FLIGHT CYCLES REF BSH HANGAR N/R N0123 FOR DETAILS OF WORK ACCOMPLISHED. DIP INITIATED TO ACCOMPLISH HFEC & LFEC INSPECTION WITH A THRESHOLD OF 56,000 CYCLES AFTER REPAIR INSTALLED AND THERE AFTER RIR INSPECTION AT 36,000 FLIGHT CYCLES