Service difficulty report · Strap · Boeing 737*

Difficulty date
December 24, 2021
Submitted
February 7, 2022
Operation
Air carrier
Aircraft
N454WN
Make and model
Boeing 737*
Aircraft serial
29851
Aircraft time
59,747 hours, 35,307 cycles
Part
Strap
Condition
Corroded
Location
Fuselage
Stage of operation
UK
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** AFT CARGO COMPARTMENT BILGE FLOOR PANEL SPLICE AT STA-887; CORRODED. DOT#208-110 ; / [01] REMOVED CORROSION ON AFT CARGO COMPARTMENT BILGE FLOOR PANEL SPLICE AT STA 887 AS PER REF B737 SRM 53-00-53-1A-2; [02] CORRECTION REFERENCE. REMOVED CORROSION ON AFT CARGO COMPARTMENT BILGE FLOOR PANEL SPLICE AT STA 887 AS PER REF B737 SRM 51-10-02-0G-0; [03] VERIFIED STEPS 2 AND 3; [04] PERFORMED UT THICKNESS INSP ON REWORKED AREA IAW B737 NDT P4 51-00-00 PROC.3 ; MIN THK. NOTED 0.040'<BR>TOOL USED : OLYMPUS 27MG B/C 172139 04/22; [05] EVALUATE REWORKED AREA. MATERIAL THICKNESS 0.062';MATERIAL LOST 0.020'; MATERIAL REMAINING 0.042'. FOUND OUT OF LIMITS AS PER REF SRM 53-00-53-1A-2; [06] REMOVED CORROSION ON AFT CARGO COMPARTMENT BILGE FLOOR PANEL SPLICE (STRAP) AT STA 887. FOUND OUT OF LIMITS AS PER REF B737-700 SRM 53-00-53-1A-2. REMOVED AND REPLACED STRAP AND WILL BE INSTALLED IN ITEM TTG8Q004FPW7; [07] VERIFIED STEP 6.