SDR CALA2026021313750

Service difficulty report · Web · Boeing 737724

Difficulty date: January 17, 2026
Submitted: February 13, 2026
Operation: Air carrier
Aircraft: N14731
Make and model: Boeing 737724
Aircraft serial: 28799
Aircraft time: 81,665 hours, 30,075 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Web
Part number: 146A8120
Condition: Corroded
Location: Zone 100
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

FOUND EXCESSIVE CORROSION ON THE AFT CARGO MAIN SILL WEB, BTW BS 794 & 847. REMOVED, LOCATED, DRILLED, COUNTERSINK, APPLIED ALODINE, PRIMER, INSTALLED NUTPLATES, & INSTALLED A NEW MAIN SILL WEB IAW SRM 51-40-05-0G-0, SRM 51-40-08-0G-0, AMM 51-21-41-370-802, 51-21-72-370-801, 51-40-02-0G-0, AMM 20-60-07-913-801, & DWG 146A8120.