Service difficulty report · Tension Tie · Boeing 737*

Difficulty date
March 17, 2022
Submitted
April 20, 2022
Operation
Air carrier
Aircraft
N472WN
Make and model
Boeing 737*
Aircraft serial
33831
Aircraft time
58,559 hours, 34,804 cycles
Part
Tension Tie
Condition
Corroded
Location
Fuselage
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

CORROSION ON SHEAR WEB TENSION STRAP AT B.S. 1016+7 - 1016+12; R.B.L. 3; W.L. 208.1. / [01] THIS STRUCTURAL ITEM DOES NOT HAVE ENTRIES IN SRM FOR ALLOWABLE DAMAGE IS REPAIRABLE BY REPLACEMENT. PER SRM 51-10-02-0G-0 PARAGRAPH 9;[02] VERIFIED CORRECTIVE ACTION #1;[03] FABRICATED; LOCATED AND DRILLED NEW TENSION STRAP PER SRM 51-40-05 & DWG#147A8744; FROM 7075-T6 X 0.071' CLAD SHEET LOT# 1478276-1. OK TO TREAT AND PRIME.;[04] VERIFIED CORRECTIVE ACTION STEP 3.;[05] TREATED AND PRIMED TENSION STRAP PER SRM 51-20-01 AND SOPM 20-41-02. OK TO INSTALL.;[06] VERIFIED CORRECTIVE ACTION STEP 5. VERIFIED OK TO INSTALL.;[07] INSTALLED NEW SHEAR WEB TENSION STRAP IAW SRM 51-40-02-0G-0 AND DWG#147A5600.;[08] VERIFIED COMPLETE STEP 1.