SDR CALA2020032700715

Service difficulty report · Stiffener · Boeing 737724

Difficulty date: March 25, 2020
Submitted: March 27, 2020
Operation: Air carrier
Aircraft: N24736
Make and model: Boeing 737724
Aircraft serial: 28803
Aircraft time: 66,406 hours, 22,024 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Stiffener
Part number: 111A2401U3
Condition: Cracked
Location: Fuselage
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

CENTER WIN BOX FWD UPPER SKIN STA 546 RBL- 54.5 HORIZONTAL STIFFNER SHOW EVIDENCE OF BEING CRACKED . MKD 126-027 REF AAR NR 99878133 REMOVED AND REPLACED CENTER WING BOX FWD UPPER SKIN STA 546 RBL 54.5 STIFFENER IN REF B737-700 ECRA 5714-01121 & RES # 2015752-SC PERFORMED HFEC ON EXISTING HOLES REF # PT6 51-00-00 PROC 16 NO CRACKS. FILLED SEAL AND CAP SEAL WILL BE ACCOMPLISHED ON N/R 99878455 C/W INSPECTION