SDR ASAA2017100622219

Service difficulty report · Cusp Web · Boeing 737990

Difficulty date: October 6, 2017
Submitted: October 18, 2017
Operation: Air carrier
Aircraft: N303AS
Make and model: Boeing 737990
Aircraft serial: 30016
Aircraft time: 58,579 hours, 22,838 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Cusp Web
Part number: 147A851023
Condition: Corroded
Location: Bs 947-992
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

CUSP WEB AT BS 950 - 990 HAS SURFACE CORROSION. ACFT GROUNDED. REMOVED CORROSION, AND FOUND TO BE OUT OF LIMITS IAW SRM 53-70-15-1A-1. REMOVED AND REPLACED THE CUSP WEB IAW SRM 51-40-02, DRAWING 147A8501, REV-, SHEET 71, AND EA 900-53EA-19364, REV 00.