Service difficulty report · Transition Panel · Boeing 737990

Difficulty date
February 23, 2016
Submitted
March 8, 2016
Operation
Air carrier
Aircraft
N319AS
Make and model
Boeing 737990
Aircraft serial
33679
Aircraft time
46,130 hours, 17,707 cycles
Part
Transition Panel
Part number
143A7501
Condition
Corroded
Location
Bs 500j-500l
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 LT TRANSITION PANEL FROM BS 500J+10 TO 500L CORRODED IN SEVERAL PLACES. ACFT GROUNDED. REMOVED CORROSION FWD PIT LT TRANSITION PANEL FROM BS 500J+10 TO BS 500L IAW SRM 51-10-02. AFTER FURTHER EVALUATION CORROSION FOUND TO BE MORE THAN 50 PERCENT, OUT OF LIMITS. ORIGINAL THICK .040 IAW SRM 53-30-53. R & R TRANSITION PANEL FROM BS 500J+10 TO BS 500L IAW SRM 53-00-53-2R-6 AND DWG 1143A7501 ALODINED IAW SRM 51-20-01 AND PRIMED IAW SOPM 20-41-02 DOT REMOVED .