Service difficulty report · Spar · Boeing 7377H4

Difficulty date
January 4, 2023
Submitted
February 10, 2023
Operation
Air carrier
Aircraft
N214WN
Make and model
Boeing 7377H4
Aircraft serial
32486
Aircraft time
59,300 hours, 35,194 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
Condition
Cracked
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

R/W FRONT SPAR INFERNAL UPPER CHORD FWD TIE-DOWN CLIP CRACKED ABOVE ACCESS PANEL621EB DEFUELING STATION MKD DOT<[01] REMOVED ACCESS PANEL # 621FB GAINED ACCESS TO REPAIR REF B 737-700 SRM 51-40-01;[02] PARTIAL REMOVED FASTENERS AT R/W UPPER CHORD FWD TIE DOWN ABOVE ACCESS PANEL 621EB REF B737-700 SRM 57-40-01;[03] REMOVED NOSE BEAM F/P AT R/W T/E SS 150.81 AND SS 48.97 IN REF SRM 51-40-02-0G-0;[04] LOCATED AND DRILED NEW NOSE BEAM P/N 116A5640Y18 REF. B737-700 SRM 51-40-05-0G-0;[13] PARTIALLY INSTALLED FASTENERS. 70% AT NOSE BEAM R/W FRONT SPAR ABOVE ACCESS PANEL 621 REF. B737-700SRM 51-40-02-0G-0;[14] COMPLETED INSTALLATION OF NOSE BEAM R/W FRONT SPAR ABOVE ACCESS PANEL 621EB 100% FASTENERS INSTALLED PER REF 51-40-02-0G-0 AND DWG 116A5640.;[21] (FINAL) REMOVED ACCESS PANEL # 621FB TO GAIN ACCESS TO NOSE BEAM REPLACEMENT; LOCATED; DRILLED; TREATED; PRIMED AND TOPCOAT NEW NOSE BEAM (P/N 116A5640Y18). INSTALLED NEW NOSE BEAM AND APPLIED CIC AND INSTALLED ACCESS PANEL # 621FB.;[22] VERIFIED STEPS 20 AND 21

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