SDR SWAA2020030442069

Service difficulty report · Channel · Boeing 7377K9

Difficulty date: February 10, 2020
Submitted: March 4, 2020
Operation: Air carrier
Aircraft: N7879A
Make and model: Boeing 7377K9
Aircraft serial: 34321
Aircraft time: 44,713 hours, 21,719 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Channel
Part number: 143A75000
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*** FORWARD CARGO BAY L/H Z-CHANNEL HAD CORROSION ON FASTENER HOLES FROM STA 400-500D, LBL 24, WL 157 CORROSION ON FORWARD CARGO BAY L/H Z CHANNEL FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2. R&R L/H ZEE CHANNEL PER SRM 51-40-02, SRM 57-40-05, SRM 53-00-53-2R-5 AND BOEING DRAWING 143A7500. CHANNEL SPLICE LOCATED AT BS 480-500 LBL 24 WL 157

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