Service difficulty report · Threshold · Boeing 7377CT

Difficulty date
October 13, 2022
Submitted
November 17, 2022
Operation
Air carrier
Aircraft
N569WN
Make and model
Boeing 7377CT
Aircraft serial
33656
Aircraft time
66,340 hours, 34,395 cycles
Part
Threshold
Condition
Corroded
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

CORROSION ON AFT CARGO BAY THRESHOLD AT RBL 27 BS 807+19; BS 827+1; BS 827+6; BS 827+8; BS 827+11; BS 827+13. / [01] VERIFIED APLICABILITY FOR IDENTIFICATION IAW SRM 53-60-15-01-1 AND SRM 53-60-15-1A-1 FOR ALLOWABLE DAMAGE;[02] REMOVED CORROSION ON AFT CARGO BAY THRESHOLD AT RBL 27 BS 827+6 IAW SRM 51-10-02 EVALUATED DAMAGE MEASURES L= 1.0' X W=.800' D=0.012' REMAINING THICKNESS 0.033' ORIGINAL. THICKNESS 0.045'<BR>FOUND TO BE OUT OF LIMITS IAW SRM 53-60-15-1A-1 A.D. USED TOOL: ID:ATS2473 S/N: UNKNOWN DUE DATE: 08/2023;[03] THIS DISCREPANCY WILL BE ACCOMPLISHED ON CARD;[04] THIS DISCREPANCY WILL BE ACCOMPLISHED ON CARD TTG8Q00FFHHA;[05] VERIFIED STEPS 1 - 6.<BR>VERIFIED ITEM 4 CORRECTIVE ACTIONS. <BR>VERIFIED MEASUREMENTS.

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