Service difficulty report · Support Angle · Boeing 7377H4

Difficulty date
June 9, 2021
Submitted
July 19, 2021
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
54,253 hours, 32,244 cycles
Part
Support Angle
Condition
Corroded
Location
Bs 500d
Stage of operation
IN
How discovered
V
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 SIDEWALL SUPPORT ANGLE AT FWD CARGO BAY BS500D S-23R TO S-25R WL157. ; / [01] EVALUATED CORROSION ON BULKHEAD SUPPORT; FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS IN THE SRM AND REQUIRES REPLACEMENT PER SRM 51-10-02-0G-0; [02] VERIFIED CORROSION ON BULKHEAD SUPPORT; FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS IN THE SRM AND REQUIRES REPLACEMENT PER SRM 51-10-02-0G-0; [03] REMOVED FCB RH SIDEWALL SUPPORT ANGLE BS500D S-23R TO S-25R IAW SRM 51-40-02-0G-0; [04] R/H SIDEWALL SUPPORT ANGLE AT BS500D WAS REMOVED FROM STR19R TO STR25R IAW SRM 51-40-02; [05] CERTIFIED STEP 4; [06] CONFORMED WITH NEW PART; BKD TO SIDEWALL SUPPORT ANGLE BS500D LBL21-61;[08] LOCATED AND DRILLED NEW BKD TO SIDEWALL SUPPORT ANGLE AT BS 500D LBL 21-61 AND APPLIED CHEMICAL CONVERSION COATING AND PRIMER IAW SRM 51-40-05-0G-0 AND DWG 143A9485.; [09] VERIFIED LOCATED AND DRILLED NEW BKD TO SIDEWALL SUPPORT ANGLE AT BS 500D LBL 21-61 AND APPLIED CHEMICAL CONVERSION COATING AND PRIMER IAW SRM 51-40-05-0G-0 AND DWG 143A9485;

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