SDR SWAA2020093016182

Service difficulty report · Floor Support · Boeing 7378H4

Difficulty date: September 15, 2020
Submitted: September 30, 2020
Operation: Air carrier
Aircraft: N8652B
Make and model: Boeing 7378H4
Aircraft serial: 36971
Aircraft time: 20,887 hours, 9,203 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 143A7500
Condition: Corroded
Location: Bs 500a-500i
Stage of operation: IN
How discovered: 9
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 STA 500A TO 500I RBL 24 FLOOR SUPPORT Z ANGLE UPPER SURFACE CORRODED AT WL157. REMOVED AND EVALUATED CORROSION ON FWD CARGO RT Z ANGLE FROM STA 500A TO 500I, IAW B737 SRM 51-10-02-0G-0 & 53-00-53-1A-2. FOUND OUT OF LIMITS WITH .008' LOSS, ORIG .040' REMAIN .032'. REMOVED & REPLACED RT Z-ANGLE FROM STA 500A TO 500I RBL 24, IAW BOEING DWG 143A7500 REV-& B737 SRM 53-00-53-2R-5 P/N 143A7501-188.

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