Service difficulty report · Transition Panel · Boeing 737990ER

Difficulty date
March 5, 2018
Submitted
March 13, 2018
Operation
Air carrier
Aircraft
N402AS
Make and model
Boeing 737990ER
Aircraft serial
41189
Aircraft time
21,246 hours, 6,990 cycles
Part
Transition Panel
Part number
143A7501192
Condition
Corroded
Location
Fuselage
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

FORWARD CARGO COMPARTMENT RIGHT SIDE TRANSITION PANEL CORRODED BS 500A - BS 500L, RBL 23. GROUNDED - YES. REMOVED CORROSION ON RT TRANSITION PANEL IN FWD CARGO STA 500A-500L IAW SRM 51-10-02 LOWEST READING STA 500A-500E+7 IS .037 ORIG THICKNESS .040 REMOVED .003 FOUND TO BE IN LIMITS IAW SRM 53-00-53-1A -2 AND IN REFERENCE W/BAC 1496-444 STA 500E+7 TO 500L LOWEST READING WAS .028 ORIG THICKNESS .040 REMOVED .012 FOUND TO BE OUT LIMITS IAW SRM 53-00-53-IA-2 AND IN REF W/BAC 1496-444. REMOVED TRANSITION PANEL STA 500E+7 TO 500L FOR FABRICATION IAW SRM 53-00-53-2R-5. FABRICATE TRANSITION PANEL IAW SRM 53-00-53-2R-6 SRM 53-00-53- 2R-5, SRM 51-40-05, SRM 51-40-08 AND 51-40-06, INSTALLED TRANSITION PANEL STA 500E+7 TO 500L AND SPLICES IAW BAC DWG 143A7501, BACDWG 143A7505 REV B AND SRM 53-00-53-2R-6, SRM 53-00-53-2R- 5 AND SRM 51-40-02.