Service difficulty report · Transition Panel · Boeing 737990ER

Difficulty date
January 9, 2025
Submitted
January 24, 2025
Operation
Air carrier
Aircraft
N479AS
Make and model
Boeing 737990ER
Aircraft serial
60576
Aircraft time
32,160 hours, 9,918 cycles
Part
Transition Panel
Part number
BAC1496444
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 PIT R/H TRANSITION PANEL HAS CORROSION FROM STA 500F TO 500L. GROUNDED - YES. REMOVED CORROSION FROM FWD PIT TRANSTION PANEL FROM STA 500F-STA 500L IAW B737-900 SRM 53-00-53-1A-2. ORIGINAL THICKNESS IS 0.040 IAW B737-900 SRM 53-30-53-0I-2. REMOVED 0.040, 0.0 REMAINS. FOUND TO BE OUT OF LIMITS FROM STA500F -STA500I AND STA500J -STA500L FOUND TO BE WITHIN LIMITS IAW B737-900 SRM 53-00-53-1A-2. ALODINED, PRIMED AND INSTALLED REPAIR PARTS IAW B737-900 SRM 53-00-53-2R-5.