Service difficulty report · Sidewall Support · Boeing 73773V

Difficulty date
July 20, 2023
Submitted
August 15, 2023
Operation
Air carrier
Aircraft
N7839A
Make and model
Boeing 73773V
Aircraft serial
30243
Aircraft time
63,332 hours, 39,016 cycles
Part
Sidewall Support
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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 ON FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS727A - BS807 LBL21 WL157.<FOUND TO BE OUT LIMITS.;[02] VERIFIED STEPS 1;2;3;4; IN PARTIAL.;[03] REMOVED FWD SHIELD AT ACB BS767 - BS787 PER SRM 51-40-02-0G.;[04] UPDATED CORRECTIVE ACTION #3.<BR>REMOVED FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS727- BS847 PER SRM 51-40-02-0G.;[05] FABRICATED FLOOR SIDEWALL SUPPORT FROM MATERIAL BAC1496-377 7075-T62 LOT# 1526048-1 FROM BS 727 TO BS 847 AND SPLICE SIDEPLATE FROM MAT BAC1496-377 7075-T62 LOT# 1526048-1 AT BS 727E+10; LOCATED AND DRILLED ALL REPAIR PARTS AND APPLIED CHEMICAL CONVERSION COATING IAW SRM 53-00-53-2R-6 REPAIR 6; DWG 146A7502.<BR><BR> OK TO PRIMER;[06] VERIFIED COMPLETION OF CORRECTIVE ACTIONS 5.;[07] APPLIED PRIMER ON FLOOR TO SIDEWALL SUPPORT AND SPLICE SIDEPLATE IAW SOPM 20-41-02.;[08] VERIFIED COMPLETION OF CORRECTIVE ACTIONS 7.<BR>COMPLETED STEPS 1-4.;[09] OK TO INSTALL SPLICE AT BS 727E+10 PER SRM 53-00-53-2R-6 REPAIR 6.;[10] OK TO INSTALL SPLICE AT BS 727E+10 GIVEN;[11] INSTALLED SPLICE ON FLOOR TO SIDEWALL SUPPORT AT BS 727E+10 PER SRM 53-00-53-2R-6 REPAIR 6.APPLIED CORROSION INHIBITING COMPOUND ON ALL PARTS PER SRM 51-20-01.<BR>TIME OF APPLICATION: AT 27-JUL-2023 19:04 UT INSTALLED FLOOR TO SIDEWALL SUPPORT FROM BS727 TO BS847 PER SRM 51-40-02-0G. AND DWG 146A7500.;[19] VERIFIED COMPLETION OF CORRECTIVE ACTIONS 18.

More about the Boeing 737-73V