Service difficulty report · Beam · Boeing 7377H4

Difficulty date
February 9, 2023
Submitted
February 27, 2023
Operation
Air carrier
Aircraft
N408WN
Make and model
Boeing 7377H4
Aircraft serial
27895
Aircraft time
71,794 hours, 42,650 cycles
Part
Beam
Condition
Corroded
Location
Zn 600 Right Win
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. RIGHT WING T/E; PANELS SUPPORT BETWEEN W/S 485 TO 302; EVIDENCE CORROSION AROUND FASTENER HOLE.<[01] REMOVED NUT PLATES TO GAIN ACCESS TO CORROSION AS PER B 737 SRM 51-40-02-0G-0;[02] REMOVED CORROSION AT RIGHT WING T/E AT PANEL SUPPORT BETWEEN W/S 485 TO 302 AS PER B 737 SRM 51-10-02-0G-0;[03] VALIDATED STEPS 1 & 2;[04] PART REWORKED HAS EXFOLIATED CORROSION FOUND TO BE OUT OF LIMITS AS PER B737-700 SRM 57-51-02-1A-1 FIG 108 DETAIL A;B;C;AND D;[05] VALIDATED STEP 4;[06] LOCATED AND DRILLED NEW SUPPORT BEAM AS PER B 737 51-40-05-0G-0;[07] VALIDATED STEP 6<BR><BR><BR>OK TO INSTALL NEW ASSY.;[08] INSTALLED NEW RIGHT WING T/E; PANELS SUPPORT BETWEEN W/S 485 TO 302 AS PER B737-700 SRM 51-40-02-0G-0;[09] VALIDATED STEP 8

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