SDR SCNA20201008114

Service difficulty report · Floor Support · Boeing 7378Q8

Difficulty date: September 20, 2020
Submitted: October 8, 2020
Operation: Air carrier
Aircraft: N801SY
Make and model: Boeing 7378Q8
Aircraft serial: 30332
Aircraft time: 63,730 hours, 24,799 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Condition: Corroded
Location: Bs 500d-500e
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

CORROSION FORWARD CARBO BAY CORROSION ON INTERCOSTAL UNDER LEFT CARGO FLOOR Z CHANNEL STA 500D-500E LBL 25 WL 160 NEAR SCREW HOLES, MARKED. FORWARD CARGO BAY INTERCOSTAL AT BS 500D TO 500E LBL 25 UNDER Z-CHANNEL FOUND TO BE OUT OF LIMITS, IAW B737-800 SRM 53-00-53-1A-2 FIG 103. REMOVED AND REPLACED INTERCOSTAL, IAW B737-800 SRM 51-40-02-0G-0 AND BOEING DRAWING 143A7505 REV A.

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