SDR FDEA201711183273

Service difficulty report · Cusp Web · Boeing 757204

Difficulty date: November 18, 2017
Submitted: November 21, 2017
Operation: Air carrier
Aircraft: N924FD
Make and model: Boeing 757204
Aircraft serial: 26267
Aircraft time: 65,533 hours, 25,868 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Cusp Web
Part number: 144N51509
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

MAIN DECK STA 978 LT SIDE CUSP WEB CORRODED. REMOVED CORROSION AND EVALUATED CUSP WEB MAIN DECK AT STA 978 LT, ORIGINAL MAT .056", MAT REM .044" FOUND TO BE OUT OF LIMITS IAW SRM 53-40-13-1A DET II FIG 101. FORMED, LOCATED, DRILLED AND TRIMMED SHEAR WEB (CUSP WEB) IAW B DWG 144N5150 REV C REV A, INSTALLED NEW SHEAR WEB (CUSP WEB) IAW B DWG 144N5150 REV C AND REV A.