Service difficulty report · Sidewall Support · Boeing 7377BD

Difficulty date
April 18, 2022
Submitted
May 10, 2022
Operation
Air carrier
Aircraft
N7736A
Make and model
Boeing 7377BD
Aircraft serial
35109
Aircraft time
50,096 hours, 25,534 cycles
Part
Sidewall Support
Part number
146A750127
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 ON AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT LBL 21 BS 727C+6; BS 727C+10; BS 727C+14; BS 727D+3; BS 727D+5-727D+8; BS 727D+10-727D+16; BS 727D+18; BS 727E+1-727E+8. / [01] VERIFY APPLICABILITY OF SRM 53-00-53-1A-2 FOR ALLOWABLE DAMAGE ON AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT LBL 21; BS 727-847 WL 156;[02] UPDATED STEPS 9-12;[03] UPDATED STEPS 13-16;[04] UPDATED STEPS 1-8;[05] VERIFIED CORRECTIVE ACTION 1.<BR>VERIFIED AND COMPLETED STEPS 1-16;[06] COMPLETED STEPS 1-16;[07] LOCATED AND DRILLED NEW FLOOR TO SIDEWALL SUPPORT PART#146A7502-27 IAW SRM 51-40-05-0G-0 AND DWG 146A7500;[08] VERIFIED CORRECTIVE ACTION 7;[09] OK TO INSTALL.;[10] VERIFIED OK TO INSTALL L/H AFT CARGO FLOOR TO SIDEWALL SUPPORT.;[11] INSTALLATION NEW FLOOR TO SIDEWALL SUPPORT PART#146A7502-27 S DOCUMENTED ON CUSTOMER CARD #TTG8Q0049QGG.;[12] INSTALLED NEW FLLOR TO SIDEWALL SUPPORT PART#146A7502-27 PER SRM 51-40--2-0G-0 DWG#146A7502;[13] VERIFIED NEW FLOOR TO SIDEWALL SUPPORT PART#146A7502-27 INSTALLED PER SRM 51-40-02-0G-0; DWG146A7502; DWG146A7500.

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