Service difficulty report · Crease Beam · Boeing 7377BD

Difficulty date
February 29, 2020
Submitted
August 25, 2021
Operation
Air carrier
Aircraft
N7702A
Make and model
Boeing 7377BD
Aircraft serial
33917
Aircraft time
53,747 hours, 28,462 cycles
Part
Crease Beam
Condition
Corroded
Location
Bs 706-727
Stage of operation
IN
How discovered
9
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

WHILE INSPECTING FOR NRC U135593; FOUND CORROSION ON UNDERSIDE AND INNER EDGE OF CREASE BEAM SHEAR WEBS; STA 706 TO STA 706 + 11'; STA 706 + 11' TO STA 727; RBL 65; WL 208 INCLUDING ON FASTENER TAILS AND EXPOSED FASTENER HOLES OUTBOARD TO OUTER CREASE BEAM CHORD. / REPLACED CREASE BEAM SHEAR WEB; STA:706 TO 706+11; RBL65; WL208 FROM .045' CLAD 7075T; LOT#1415875-1; T-62 IAW SRM 53-40-13; SRM 51-10-02; SRM 51-20-01; SRM 51-40-05; SRM 51-40-02; BAC5602; BOEING DWG# 144A5925(-42); DWG#144A5920; DWG#144A5900 STATION 716-727 RBL65 WL208 FOUND TO BE WITHIN LIMITS PER SRM 53-40-13-1A-1.

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