SDR CALA2026021913901

Service difficulty report · Web · Boeing 737824

Difficulty date: January 21, 2026
Submitted: February 19, 2026
Operation: Air carrier
Aircraft: N33289
Make and model: Boeing 737824
Aircraft serial: 31607
Aircraft time: 66,417 hours, 24,571 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Web
Part number: 143A8122
Condition: Corroded
Location: Zone 100
Part time: 66,416 hours, 24,571 cycles
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

FWD CARGO BAY MAIN SILL WEB BTWN BS 440 - 500 POSSIBLE CORROSION. REPLACED THE MAIN SILL WEB BTWN BS 440 - 500 IAW SRM 51-40-02--0G-0, 51-40-05-0G-0, 51-40-08-0G-0. AMM 51-21-91-620-802, 51-21-72-370 -804, AND DWG 143A8122, REV D, DWG 143A8120, REV T.