Service difficulty report · Transition Panel · Boeing 737990ER

Difficulty date
April 25, 2019
Submitted
May 13, 2019
Operation
Air carrier
Aircraft
N442AS
Make and model
Boeing 737990ER
Aircraft serial
43293
Aircraft time
21,604 hours, 7,078 cycles
Part
Transition Panel
Part number
143A7501201
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

FWD PIT FLOOR STRUCTURE, TRANSITION PANEL CORRODED FROM STA. 500E- 500L LBL 27. GROUNDED - YES. REMOVED CORROSION IAW SRM 51-10-02. ORG .040, REMOVED .006, REMAINING .034 AND FOUND OUT OF LIMITS IAW SRM 53-30-53-01 FROM STA 500H -500L. TOOL T8225I. REMOVED CORROSION FROM STA 500E-500F IAW SRM 51-10-02. ORIG .040, REMOVED .002, REMAINING .038 FOUND IN LIMITS IAW SRM 53-30-53 OK ALODINED IAW SRM 51-20-01. PRIMED IAW SOPM 20-41-02. REMOVED CORRODED SECTION IAW SRM 51-40-02 MAT ID BAC 1496-444 ZEE CHANNEL 7075T62 PO 883991.1 LOT # 151608137 IAW SRM 53-30-53-01-2. FABED IAW SRM 53-00-53-2R-5. ALODINED IAW SRM 51-20-01. PRIMED SOPM 20-41-02. INSTALLED NEW ZEE CHANNEL IAW SRM 51-40-002. AND SRM 53-00-53-2R-5. INSTALLED SIDEWALL SUPPORT IAW SRM 51-40-02.