Service difficulty report · Transition Panel · Boeing 737890

Difficulty date
November 4, 2025
Submitted
December 2, 2025
Operation
Air carrier
Aircraft
N557AS
Make and model
Boeing 737890
Aircraft serial
35176
Aircraft time
70,079 hours, 20,914 cycles
Part
Transition Panel
Part number
143A7501199
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

FWD CARGO PIT LT BS 480 TO 500D TRAINSION Z-ANGLE, HAS CORROSION MARKED. GROUNDED - YES. REMOVED CORROSION FROM FWD PIT L/H TRANSITION PANEL AT STA 480-500D IAW B737-800 SRM 53-00-53-1A-2.2.D. ORIG THICKNESS IS .040" IAW B737-800 SRM 53-30-53-01-2. TABLE 2. REMOVED .005" REMAINING THICKNESS IS .035" AND IS FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-00-53-1A-2.4.A.(2). REPAIRED FWD CARGO PIT L/H STA 480 TO 500D TRANSITION PANEL IAW B737-800 SRM 53-00-53-2R-5.