Service difficulty report · Shear Tie · Boeing 7377H4

Difficulty date
March 20, 2021
Submitted
May 3, 2021
Operation
Air carrier
Aircraft
N407WN
Make and model
Boeing 7377H4
Aircraft serial
29817
Aircraft time
66,792 hours, 39,453 cycles
Part
Shear Tie
Condition
Corroded
Location
Bs 1036 S2l-R
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 ANGLE AT FUSELAGE SKIN BS 1036 S-2L TO S-2R. / REMOVED CORROSION AT FUSELAGE SKIN BS 1036 STR 2R TO STR 2L ANGLE CORROSION THROUGH FOUND OUT OF LIMITS PER REF B737-700 SRM 51-10-02-0G-0.REMOVED ANGLE AT FUSELAGE SKIN BS 1036 STR 2R TO STR 2L PER REF B737-700 SRM 51-40-02-0G-0. FABRICATED ANGLE; MAT USED BAC 1490-53 7075-0 PO# 1620743 PER REF DWG #148A3112-2.HEAT TREATED ANGLE PN 148A3112-2 FROM 7075-0 TO 7075 T62 PER REF BAC 5602 AND AAR FORM QP 84 REV 7. LOCATED AND DRILLED NEW ANGLE PER REF B737-700 SRM 51-40-05-0G-0 AND DWG# 148A3112-2.INSTALLED NEW ANGLE AT FUSELAGE SKIN BS 1036 STR 2R TO STR 2L PER REF B737-700 SRM 51-40-02-0G-0 AND DWG# 148A3112-2.

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