Service difficulty report · Support · Boeing 7377H4

Difficulty date
April 21, 2022
Submitted
May 9, 2022
Operation
Air carrier
Aircraft
N927WN
Make and model
Boeing 7377H4
Aircraft serial
36889
Aircraft time
45,530 hours, 27,478 cycles
Part
Support
Condition
Corroded
Location
Fwd Cargo
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 FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT AT LBL 24 BS 460+6; BS 460+10. / [01] VERIFIED SRM 53-00-53-1A-2 IS APPLICABLE FOR THIS REPAIR. <BR><BR>REMOVED CORROSION AT TWO LOCATIONS ON FCB FLOOR TO SIDEWALL SUPPORT PER SRM 51-10-02-0G-0. 1ST LOCATION: LBL 24; BS 460+6 MEASURES L=0.600; W=0.450; Y=0.011. 2ND LOCATION: LBL 24; BS 460+10 MEASURES L=0.700; W=0.450; Y=O.018. ORIGINAL PART THICKNESS PER SRM 53-30-53-01-2 IS 0.040' WITH MAX REMOVAL OF DAMAGE AT 10% OF PART THICKNESS THEREFORE BOTH MEASUREMENTS/LOCATIONS ARE OUT OF LIMITS PER SRM 53-00-53-1A-2 STEPS 2. D. (1); 4. A. (2) (A) DETAIL D.<BR><BR>TOOL USED: DIAL DEPTH GAGE<BR>ID:ATS2678<BR>SN:UNKNOWN<BR>DATE:04/2022<BR>DUE:04/2023;[02] VERIFIED APPLICABILITY OF SRM 53-00-53-1A-2. VERIFIED DAMAGE IS OUT OF LIMITS AS NOTED IN CORRECTIVE ACTION ITEM 1.;[03] UPDATED MEASUREMENTS;[04] UPDATED PART NUMBER;[05] NEW FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT (PN: 143A7501-183) AT LBL 24 BS 460+6 - 460+10 WAS RECEIVED NEW; LOCATED AND DRILLED; AND WILL BE INSTALLED ON CUSTOMER CARD TTG8Q00BZS3P AND TTG8Q004FTYD;[06] UPDATED MEASUREMENTS;[07] NEW FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT (PN: 143A7501-183) AT LBL 24 BS 460+6 - 460+10 WAS RECEIVED NEW ON CUSTOMER CARD: TTG8Q00BZS3P. PART WILL BE WORKED/INSTALLED ON CUSTOMER CARD TTG8Q00BZS3P AND TTG8Q004FTYD;[08] VERIFIED ITEMS 4;6;7. CORRECTIVE ACTIONS.

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