Service difficulty report · Transition Panel · Boeing 737990ER

Difficulty date
August 5, 2026
Submitted
September 15, 2026
Operation
Air carrier
Aircraft
N474AS
Make and model
Boeing 737990ER
Aircraft serial
40715
Aircraft time
41,075 hours, 12,860 cycles
Part
Transition Panel
Part number
146A750235
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

AFT CARGO BAY, LT TRANSITION HAS MULTIPLE SPOTS OF CORROSION AT BS 727 - 847. GROUNDED - YES. REMOVED CORROSION, FOUND OUT OF LIMITS, REPAIRED IAW SRM 53-00-53-2R-5 W= 1.5" O= 0040:. R= 0.032" L= 2" D= 0.008.