SDR SCNA20201116203

Service difficulty report · Channel · Boeing 7378Q8

Difficulty date: October 16, 2020
Submitted: November 16, 2020
Operation: Air carrier
Aircraft: N813SY
Make and model: Boeing 7378Q8
Aircraft serial: 28237
Aircraft time: 60,154 hours, 22,792 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Channel
Condition: Corroded
Location: Bs 500a-500h
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 AROUND MULTIPLE NUTPLATES ON FWD CARGO BAY RT FLOOR TO SIDEWALL ZEE CHANNEL STA 500A-500H+16 RBL 24 WL 156. CORROSION ON Z-CHANNEL FWD CARGO RT BS 500A-500H FOUND TO BE OUT OF LIMITS, IAW SRM 53-00-53-1A-2 FIG 103 DETAIL D. REMOVED Z-CHANNEL BS 500A-500I, IAW SRM 51-40-02-0G-0. INSTALLED REPLACEMENT Z CHANNEL, IAW SRM 51-40-02-0G-0 AND BOEING DWG 143A7501 REV C Z-CHANNEL REPAIR SRM 53-00-53-2R-5.

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