SDR CALA2018030500839

Service difficulty report · Cusp Web · Boeing 757222

Difficulty date: March 2, 2018
Submitted: March 5, 2018
Operation: Air carrier
Aircraft: N502UA
Make and model: Boeing 757222
Aircraft serial: 24623
Aircraft time: 94,400 hours, 27,235 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Cusp Web
Part number: 144N514016
Condition: Corroded
Location: Bs 1020-1040
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 RT FLOOR CUSP WEB HAS AREAS OF CORROSION BETWEEN BS 1020 & 1040. FOUND TO BE OUT OF LIMITS IAW SRM 53-40-13, ALLOWABLE DAMAGE 1, FIG 101, DETAIL V1. REMOVED AND REPLACED THE CUSP WEB IAW DRAWING 144N5140, AND SRM 51-40-02, PG 7.