Service difficulty report · Intercostal · Boeing 737990ER

Difficulty date
February 13, 2026
Submitted
February 23, 2026
Operation
Air carrier
Aircraft
N251AK
Make and model
Boeing 737990ER
Aircraft serial
62470
Aircraft time
34,790 hours, 11,280 cycles
Part
Intercostal
Part number
143A751020
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

WHILE GAINING ACCESS TO REPLACE BONDED NUTPLATES AT BS 500J, FOUND RT BAFFLE CORRODED BETWEEN BS 500I - 500J. GROUNDED - YES. REMOVED CORROSION BETWEEN BS 500I - 500J, RT BAFFLE, ORIGINAL MATERIAL 0.020", REMOVED 0.020", L=0.500", W=0.500" FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2. ACCOMPLISHED REPAIR 1, SECTION 43, FUSELAGE FWD CARGO COMPARTMENT FLOOR STRUCTURE, BAFFLE REPAIR WITH NEW BAFFLE AND REPAIR ANGLE, ITEM 2 IAW SRM 53-30-53-2R-1, REPAIR 1. CATEGORY A REPAIR.