SDR UIEA2025070600843

Service difficulty report · Brace · Boeing 7474B5F

Difficulty date: July 12, 2025
Submitted: July 14, 2025
Operation: Air carrier
Aircraft: N445MC
Make and model: Boeing 7474B5F
Aircraft serial: 33515
Aircraft time: 91,656 hours, 15,322 cycles
System (JASC): 5420 · Nacelle/Pylon Miscellaneous Structure
Part: Brace
Condition: Chafed
Location: Zone 400
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

NO.1 PYLON DIAGONAL BRACE RH BELOW HYD DEPRESSURIZATION MODULE FOUND CHAFING.(<P>#1 PYLON DIAGONAL BRACE CHAFING AREA SMOOTHED AS PER RI-54-50-17750 REV.A. (AFTER SMOOTH OUT AREA MEASURED: L=2", W=1.25" & D=0.125"). NO FURTHER DEFECTS NOTED.</P>)

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