Service difficulty report · Support · Boeing 7377BX

Difficulty date
February 25, 2020
Submitted
March 12, 2020
Operation
Air carrier
Aircraft
N552WN
Make and model
Boeing 7377BX
Aircraft serial
30744
Aircraft time
59,169 hours, 33,658 cycles
Part
Support
Part number
143A7500
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

***CORROSION*** ON FORWARD CARGO BAY FLOOR TO SIDEWALL SUPPORT AT B.S. 500A-500D, R.B.L. 22, W.L. 155. REMOVED CORROSION ON FCB FLOOR TO SIDEWALL SUPPORT BS 500A-500D RBL22 AREAS: 1.2"X0.8"; 1"X0.7"; 0.8"X0.6" AND 1.4"X0.8" FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 STEP 4.A.(3) FIG 103 DETAIL D. REMOVED AND REPLACED FLOOR TO SIDEWALL SUPPORT BS500A-500D RBL 22, FABRICATED FROM EXTRUSION BAC 1496-444 #7075T6 LOT #1426040-1 IAW SRM 51-40-02 AND DWG 143A7500 REV A 89008U 05MAR20

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