SDR CALA2026052116432

Service difficulty report · Intercostal · Boeing 737724

Difficulty date: May 19, 2026
Submitted: May 22, 2026
Operation: Air carrier
Aircraft: N24702
Make and model: Boeing 737724
Aircraft serial: 28763
Aircraft time: 85,810 hours, 31,575 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Part number: 146A7505
Condition: Corroded
Location: Zone 200
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

DURING REMOTION OF AFT CARGO SIDEWALLS PANELS, FOUND CORROSION ON INTERCOSTAL BTW BS 747 - 767, RBL 21, REQUIRES REPLACEMENT. REMOVED, LOCATED, DRILLED, APPLIED ALODINE, PRIMER AND INSTALLED NEW INTERCOSTAL IAW SRM 51-40-02-0G-0, 51-40-05-0G-0, AMM 51-21-41-370-802, AMM 51-21-72-370-804, AND DWG 146A7505.