Service difficulty report · Shear Tie · Boeing 737*

Difficulty date
March 12, 2022
Submitted
March 25, 2022
Operation
Air carrier
Aircraft
N7728D
Make and model
Boeing 737*
Aircraft serial
33925
Aircraft time
51,265 hours, 26,478 cycles
Part
Shear 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 AT SHEAR TIE STA 360; WL 149; BETWEEN STRINGER 27L & 28L / [01] REMOVED SHEAR TIE BETWEEN STR 27L AND STR 28L AT STA 360 AS PER B737-700 SRM 51-40-02-0G-0.;[02] REMOVED CORROSION AT SHEAR TIE AS PER B737-700 SRM51-10-02-0G-0. FOUND OUT OF LIMITS AS PER B737-700 SRM 53-00-07-1A-1 (ORIGINAL MATERIAL 0.050';MATERIAL REMOVED 0.020';MATERIAL REMAINING 0.030' );[03] VERIFIED REMOVAL AND OUT OF LIMITS;[04] LOCATED AND DRILLED NEW SHEAR TIE P/N 141A1171U90 AS PER SRM 51-40-05-0G-0.;[05] VERIFIED STEP 4;[06] OK TO INSTALL SHEAR TIE AT STA 360 WL 149 BETWEEN STRINGER 27L & 28L.;[07] PARTIALLY INSTALLED NEW SHEAR TIE P/N 141A1171U90 AT STA 360 WL 149 BETWEEN STR 27L AND 28L AS PER SRM 51-40-02-0G-0 AND DWG 141A3502.;[08] VERIFIED STEP 7.;[09] INSTALLED NEW SHEAR TIE P/N 141A1171U90 AT STA 360 WL 149 BETWEEN STR 27L AND 28L AS PER SRM 51-40-02-0G-0 AND DWG 141A3502;[10] VERIFIED INSTALLATION.;[11] VERIFIED INSTALLATION.