Service difficulty report · Track · Boeing 73776N

Difficulty date
November 23, 2021
Submitted
December 13, 2021
Operation
Air carrier
Aircraft
N7722B
Make and model
Boeing 73776N
Aircraft serial
32668
Aircraft time
49,599 hours, 25,042 cycles
Part
Track
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 ON TRACK AT AFT CARGO BAY RBL13 BS807; BS867; BS810; BS817; BS814; BS787; BS795; BS799; BS747. EVALUATED DAMAGE FOUND TO BE OUT LIMIT ON BS799 AND BS 814 VERIFY STEPS 1 TO 9; [02] VERIFIED STEPS 1-9. REMOVED ACB CARGO TRACK BS727-887 RBL 13 IAW SRM 51-40-02-0G-0. LOCATED AND DRILLED NEW ACB TRACK IAW SRM 51-40-05-0G-0 AND DWG 146A7501. FABRICATED NEW ACB TRACK SPLICE FOR ACB TRACK. LOCATED DRILLED AND APPLIED A CHEMICAL CONVERSION COATING IAW SRM 53-00-53=2R-3 REPAIR 3. PRIMED THE NEW ACB TRACK SPLICE FOR ACB TRACK IAW SRM 53-00-53=2R-3 REPAIR 3. INSTALLED NEW TRACK ON AFT CARGO BAY IAW. SRM 51-40-02, DWG 146A7501, DWG 146A7500 AND SRM 51-40-03 FIG.2 SHEET 10.

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