Service difficulty report · Transition Panel · Boeing 737990

Difficulty date
June 22, 2023
Submitted
July 21, 2023
Operation
Air carrier
Aircraft
N318AS
Make and model
Boeing 737990
Aircraft serial
30018
Aircraft time
64,297 hours, 25,973 cycles
Part
Transition Panel
Part number
143A75012
Condition
Corroded
Location
Fwd Cargo
Stage of operation
IN
How discovered
9
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 R/H TRANSITION PANEL HAS MULTIIPLE AREAS OF CORROSION BETWEEN STA 500D+ TO STA 500I+8. GROUNDED - YES. REMOVED AND REPLACED TRANSITION FROM STA 500D TO 500I+8 IAW B737-900 SRM 51-40-02-0G-0.W= 2" O= .040" R= .024 L= 2" D= .016.