Service difficulty report · Transition Panel · Boeing 737990

Difficulty date
September 5, 2018
Submitted
September 27, 2018
Operation
Air carrier
Aircraft
N315AS
Make and model
Boeing 737990
Aircraft serial
30019
Aircraft time
56,321 hours, 22,319 cycles
Part
Transition Panel
Part number
146A750221
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

LT TRANSITION PANEL IS CORRODED STA 767 TO 807. GROUNDED - YES. REMOVED CORROSION STA 767-807 LT TRANSITION PANEL IAW SRM 51-10-02 MATERIAL ORIGINAL THICKNESS=.040, MATERIAL REMAINING AT AREAS OF GREATEST LOSS=.023, MATERIAL LOSS=.017 AND FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53 FIG 103, IAW SRM 53-60-53 FIG 2, TABLE 2. REMOVED LT TRANSITION PANEL STA 727K+12-803+3, FABRICATED PANELS AND SPLICES, ASSEMBLED PANELS, SPLICES AND NUTPLATES AND INSTALLED IAW SRM 53-00-53 REPAIR 5 AND SRM 51-40-03 TABLE II. ALODINED AND PRIMED AREAS OF CORROSION REMOVAL AND FABRICATED PARTS IAW SRM 51-20-01.