Service difficulty report · Threshold · Boeing 7377H4

Difficulty date
March 16, 2023
Submitted
April 24, 2023
Operation
Air carrier
Aircraft
N957WN
Make and model
Boeing 7377H4
Aircraft serial
41528
Aircraft time
38,518 hours, 23,626 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

MULTIPLE AREA OF CORROSION ON FWD CARGO BAY THRESHOLD AT RBL 23-29 BS 440-480+11 WL 156.<[01] VERIFIED APPLICABILITY PER SRM 53-30-15-1A-1 AND ID 53-30-15-O-0I-1.<BR><BR>COMPLETED STEPS;[02] VERIFIED CORRECTIVE ACTION 1 AND STEPS 1-3.;[03] LOCATED AND DRILLED NEW THRESHOLD WEB PER SRM 51-40-02 AND DWG # 143A8330;[04] VERIFIED CORRECTIVE ACTION #3.;[05] UPDATED PARTS USAGE;[06] VERIFIED MEASUREMENT TABLE COMPLETED.<BR>VERIFIED NO FURTHER ACTION REQUIRED.

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