Service difficulty report · Transition Panel · Boeing 737990

Difficulty date
June 19, 2021
Submitted
July 26, 2021
Operation
Air carrier
Aircraft
N305AS
Make and model
Boeing 737990
Aircraft serial
30013
Aircraft time
65,127 hours, 25,974 cycles
Part
Transition Panel
Part number
143A7501162
Condition
Corroded
Location
Bs 500h-500i
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 PIT R/H TRANSITION PANEL HAS AREA OF CORROSION STA 500H TO 500I. GROUNDED - YES. CORROSION FOUND TO BE OUT OF LIMITS, REPAIRED SIDEPLATE IAW B737-900 SRM 53-00-53-2R-5W=1.50" O=0.040" R=0.033" L=4.00" D=0.007".