SDR CALA2025061705624

Service difficulty report · Intercostal · Boeing 75733N

Difficulty date: June 15, 2025
Submitted: June 17, 2025
Operation: Air carrier
Aircraft: N57864
Make and model: Boeing 75733N
Aircraft serial: 32588
Aircraft time: 71,824 hours, 22,161 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Part number: 146N5700U2
Condition: Corroded
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 CARGO FLOOR R/H FRAME WEB HAS CORROSION FROM STA 1300-1320, STR 27R TO 28R, ON THE O/B SIDE. EVALUATED CORROSION ON FRAME WEB IN AFT CARGO FLOOR BTW STA 1300 -1320 STR 27R-28R AND FOUND OUT OF LIMITS. REMOVED AND REPLACED WITH NEW WEB IAW B757-300 SRM 53-60-04-1A-0, SRM 51-40-02.

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