Service difficulty report · Web · Boeing 737790

Difficulty date
September 25, 2017
Submitted
February 4, 2022
Operation
Air carrier
Aircraft
N557WN
Make and model
Boeing 737790
Aircraft serial
30166
Aircraft time
55,212 hours, 25,579 cycles
Part
Web
Condition
Corroded
Location
Aft Cargo Bay
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*** ACB; BS 727+4; BL0; WEB; CORRODED. / OUT OF LIMITS DUE TO CORROSION OVER MORE THAN 3 IN 10 FASTENERS PER SRM 53-00-53-1A-2 STEP 4C(B) FIG 103(E). FORMED; ALODINED; DRILLED AND PRIMED PER DWG. 146A3426-7 & SRM 51-40-05-0G-0. MADE OUT OF 7075-0- .032 CLAD LOT # 1285531 HEAT TREATED TO T62 ON P.O.# 64969T. PART TO BE INSTALLED ON SWA CARD NO. T704486.