Service difficulty report · Support · Boeing 7378H4

Difficulty date
July 1, 2022
Submitted
July 25, 2022
Operation
Air carrier
Aircraft
N8641B
Make and model
Boeing 7378H4
Aircraft serial
60085
Aircraft time
27,233 hours, 12,566 cycles
Part
Support
Condition
Corroded
Location
Aft 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 AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT RBL 22 BS 727J+5; BS 727J+10; BS 747+6; BS 747+10; BS 747+14; BS 747+18; BS 767+2; BS 767+6; BS 767+14; BS 767+18. / [01] EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 747+6' REMOVED 0.015' IN A AREA OF 1'X1' ORIGINAL THICKNESS 0.045' FOUND TO BE OUT OF LIMITS PER SRM 53-30-15-1A-1 USING ATS TOOL ID ATS2678 EXP 4/2023. PART WILL BE REMOVED AND REPLACED ON FAULT TTG8Q00DBC71;[02] EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 747+6' REMOVED 0.015' IN A AREA OF 1'X1' ORIGINAL THICKNESS 0.040' FOUND TO BE OUT OF LIMITS PER SRM 53-00-15-1A-2 USING ATS TOOL ID ATS2678 EXP 4/2023. PART WILL BE REMOVED AND REPLACED ON FAULT TTG8Q00DBC71;[03] UPDATED MEASUREMENT TABLE;[04] VERIFIED CORRECTIVE ACTIONS 1-3<BR>VERIFIED MEASUREMENTS TABLE<BR>VERIFIED FAULT WILL BE RESOLVED ON TTG8Q00DBC71;[05] VERIFIED CORRECTIVE ACTIONS 1-3<BR>VERIFIED MEASUREMENTS TABLE<BR>VERIFIED FAULT WILL BE RESOLVED ON TTG8Q00DBC71

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