Service difficulty report · Web · Boeing 73779P

Difficulty date
November 9, 2021
Submitted
December 1, 2021
Operation
Air carrier
Aircraft
N7862A
Make and model
Boeing 73779P
Aircraft serial
33009
Aircraft time
48,858 hours, 32,792 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

AFT CARGO BAY DOOR CUT OUT INNER WEB IS CORRODED AT RBL 26; WL 160; STA 787+12; STA 787+15; STA 787+17 TO STA 807+15; STA 807+16 TO STA 807+19; STA 827 TO STA 827+3; STA 827+4; STA 827+6 TO STA 827+9. ; / [01] EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 787+12 RBL 26 WL 160. FOUND 0.015 REMOVED FROM ORIG 0.045 IN 1'X1' AREAS; FOUND TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1 USING DIAL DEPTH GAUGE ATS 1225 S/N UNKNOWN; [02] VERIFIED OUT OF LIMITS; [03] RECEIVED NEW SUBTHRESHOLD WEB P.O.# 840933; LOCATED DRILLED; DEBURRED; INSTALLED NUT PLATES PER SRM 51-40-05-0G-0; SRM %1-40-02-0G-0; DWG 146A8340.; [04] SHOULD BE SRM 51-40-02-0G-0.; [05] VERIFIED CORRECTIVE ACTIONS 3 AND 4

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