SDR CALA2026071017665

Service difficulty report · Intercostal · Boeing 737824

Difficulty date: July 9, 2026
Submitted: July 10, 2026
Operation: Air carrier
Aircraft: N38257
Make and model: Boeing 737824
Aircraft serial: 30612
Aircraft time: 77,090 hours, 29,091 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Part number: 141A5410U12
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

POSSIBLE CORROSION ON INTERCOSTAL BTW BS 312 TO 328, LBL 45. REMOVED AND LOCATED, DRILLED, AND INTALLED NEW INTERCOSTAL ON FLOOR SUPPORT BTW BS 312 - 328, LBL 45. IAW SRM 51-40-02-0G-0, SRM 51-40-08-0G-0, AMM 51-21-41-370-802, & AMM 51-21-72-370-804.