Service difficulty report · Rail · Boeing 7377H4

Difficulty date
July 21, 2022
Submitted
August 23, 2022
Operation
Air carrier
Aircraft
N490WN
Make and model
Boeing 7377H4
Aircraft serial
32476
Aircraft time
59,880 hours, 35,571 cycles
Part
Rail
Condition
Corroded
Location
Aft Cargo Floor
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 RAIL AT AFT CARGO BAY BS727C+7; BS767+6 LBL8. / [01] [1]REMOVED (1EA) NUTS PLATE FOR ACCESS IAW SRM 51-40-02. REMOVED CORROSION ON RAIL AT AFT CARGO BAY BS 727C+ 7 LBL 8 IAW SRM 51-10-02-0G-0 MEASURE: L= 1.5' X W= .9' X D= 0.003' REWORKED AREA FOUND TO BE WITHIN LIMITS IAW SRM 53-00-53-1A-2 ALLOWABLE DAMAGE 2 PARAG. 4.A.(2) DETAIL E (B-B) FIG.103 SHEET 3.<BR> USED TOOL: DEPTH GAGE :<BR> ID: ATS1738.<BR> S/N: UNKNOWN.<BR> DUE DATE:09/2022. OK TO TREAT AND PRIME.<BR>[2]CORRODED SPLICE REPAIR ; ON UPPER FLANGE AT A JOGGLE; LOCATED AT AFT CARGO BAY BS 767 + 6 LBL3. NOT HAVE ENTRIES ALLOWABLE DAMAGE IN SRM MUST BE REPAIR BY REPLACEMENT IAW SRM 51-10-02 ITEM 9.C.;[03] REMOVED SPLICE REPAIR LOCATED AT A JOGGLE AT AFT CARGO BAY BS 767 + 6 LBL.8 IAW SRM 51-40-02. RECEIVED REPAIR CHANNEL WITH P/N: 53100004-001; LOT: 1469421; INSTALLED ACB FLOOR RAIL SPLICE ANGLE AT JOGGLE BS 767 + 6 LBL.8 IAW SRM 53-00-53-2R-2 REPAIR 2;[06] STEP #(1) THE STRUCTURAL REPAIR WAS DONE WITH SRM 53-00-53-2R-2 REPAIR 2 AND NOT SRM 51-10-02<BR>THE ITEMS #5;6;7. COMPLETED. ALL MAINTENANCE ACTION ARE COMPLETED REQUEST FINAL BUYOFF.;[11] VERIFIED RII INSPECTION REQUIREMENTS WERE MET.;[12] VERIFIED CORROSION AT BS727C+7 LBL8 WAS REWORKED WITHIN LIMITS AND RESTORED PER SRM 53-00-53-1A-2 ALLOWABLE DAMAGE 2 PARAG. 4.A.(2) DETAIL E (B-B) FIG.103 SHEET 3 . VERIFIED CORROSION AT BS767+6 LBL8 HAD NO ALLOWABLE LIMITS AND WAS REPAIRED PER SRM 53-00-53-2R-2 REPAIR 2. WORKSCOPE COMPLETE.

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