SDR SWAA2024100734525

Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date: September 5, 2024
Submitted: October 7, 2024
Operation: Air carrier
Aircraft: N489WN
Make and model: Boeing 7377H4
Aircraft serial: 33855
Aircraft time: 63,611 hours, 38,095 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Condition: Cracked
Location: Zone 100
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

AFT OF FWD CARGO COMPARTMENT SUPPORT INTERCOSTAL WEB CRACKED @ FASTENER'S TAIL S-25R STA 520 MKD DOT SUPPORT TO AIR FILTER. NOT PRIMARY STRUCTURE. NOT RII.<[01] REMOVED AND REPLACED SUPPORT INTERCOSTAL WEB AT AFT OF FWD CARGO COMPARTMENT; FABRICATED FROM MATERIAL: 7075-O-0.032; PO# 163997 IAW B/737 SRM 51-40-05-0G-0; SRM 51-40-02-0G-0; DWG 143A9803.;[02] VERIFIED REPLACEMENT. NOT RII. ONLY SUPPORT TO AIR FILTER HOUSING.

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