Service difficulty report · Rail · Boeing 7377H4

Difficulty date
April 11, 2023
Submitted
May 18, 2023
Operation
Air carrier
Aircraft
N958WN
Make and model
Boeing 7377H4
Aircraft serial
36673
Aircraft time
38,993 hours, 23,664 cycles
Part
Rail
Condition
Damaged
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

AFT CARGO BAY - RAIL HAS A MECHANICAL DAMAGE BS 747+6 RBL 3.<OUT OF LIMITS IAW SRM 51-10-02 AND 53-00-53-1A-2 FIG 103;DETAIL D.<BR>USED TOOL:<BR>ID:ATS2827<BR>DATE:01/13/23<BR>DUE:01/31/24;[02] VERIFIED CORRECTIVE ACTIONS STEP 1.;[03] CORRECTIVE ACTION FOR STEP 1; RIGHT REFERENCE IAW SRM 53-00-53-1A-2 FIG 103;DETAIL D.;[04] VERIFIED CORRECTION ITEM 3.;[05] SRM 53-00-53-2R-3 REPAIR 3 IS FOUND TO BE APPLICABLE.;[06] CUTOUT AND REMOVED RAIL SECTION BETWEEN BS 747+5' TO BS 747+8' IAW SRM 53-00-53-2R-3 REPAIR 3 PAR 4. STEP C.;[07] CUTOUT AND REMOVED RAIL SECTION BETWEEN BS 747+5' TO BS 747+8' IAW SRM 53-00-53-2R-3 REPAIR 3 PAR 4. STEP C. ALTERNATIVE 1 ; FIG 203; RECEIVED NEW CHANNEL P/N: HFAB53-CN-017; LOT:1507930-1; PO/N:889513/1 AND TRACK EXTRUSION P/N:BAC1509-100146#7050T76511;LOT:1481054-1;PO/N:854563/1.;[13] LOCATED; DRILLED AND TRIMMED NEW CHANNEL AND NEW EXTRUSION IAW SRM 53-00-53-2R-3 REPAIR 3 PAR 4. STEP C. ALTERNATIVE 1; FIG 203;[17] TREATED AND PRIMED NEW CHANNEL AND EXTRUSION IAW SRM 51-20-01 & SOPM 20-42-01. OK TO INSTALL.;[18] VERIFIED CORRECTIVE ACTION 17.<BR>OK TO INSTALL;[19] INSTALLED NEW CHANNEL AND EXTRUSION ON AFT CARGO BAY RAIL BS 747+6 RBL 3 IAW SRM 53-00-53-2R-3 REPAIR 3 PAR 4. PERMANENT) WILL BE COMPLIED WITH ON TTG8Q00KFZ0T.

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