Service difficulty report · Transition Panel · Boeing 737990ER

Difficulty date
October 16, 2018
Submitted
November 1, 2018
Operation
Air carrier
Aircraft
N423AS
Make and model
Boeing 737990ER
Aircraft serial
35206
Aircraft time
21,888 hours, 7,230 cycles
Part
Transition Panel
Part number
146A750237
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

AFT CARGO COMPARTMENT RIGHT SIDE FLOOR TO SIDEWALL TRANSITION PANEL HAS APPROX 24 SPOTS OF CORROSION ON UPPER SURFACE (WHICH INCLUDES PREVIOUSLY BLENDED AREAS) BETWEEN STATION 727I +8. GROUNDED - YES. REMOVED CORROSION FROM UPPER AND LOWER FROM TRANSITION PANEL IAW SRM 53-00-53-1A-2- ORG MAT .040 IAW SRM 53-60-53-01-2. MAT LOSS .030 REMAINING THICKNESS IS .010. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2-. REMOVED DAMAGE SECTION FROM STA 727 1+8 TO STA 767 IAW SRM 51-40-02-. FABRICATED NEW TRANSITION PANEL SECTION FROM STA 727 1+8 TO 767 IAW SRM 53-00-53-R-5- AND DWG 166A73-02-37 REV- SHEET .0037. ALODINED IAW SRM 51-20-02- PRIMED IAW SOPM 20-41-02 AND INSTALLED NEW TRANSITION PANEL FROM STA 727 1+8 TO STA 767 IAW DWG SRM 51-40-02.