Service difficulty report · Threshold · Boeing 7378H4

Difficulty date
October 24, 2023
Submitted
November 20, 2023
Operation
Air carrier
Aircraft
N8673F
Make and model
Boeing 7378H4
Aircraft serial
36937
Aircraft time
26,478 hours, 12,864 cycles
Part
Threshold
Part number
UNKNOWN
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

AFT CARGO ENTRY DOOR THRESHOLD STA. 790-847; CORROSION AROUND NUT-PLATE HOLES.<[01] REMOVED CORROSION FROM AREA PER SRM 53-60-15-1A-1 (REMAINING THICKNESS 0.042'). THRESHOLD WEB IS OUT OF LIMITS PER SRM 53-60-15-1A-1.;[02] REMOVED WEB PER SRM 51-40-02;[03] LOCATED AND DRILLED HOLES FOR NEW WEB PER SRM 51-40-05;[04] C/W INSPECTION OF LOCATED AND DRILLED HOLES FOR NEW WEB PER SRM 51-40-05;[05] INSTALLED FASTENERS PER SRM 51-40-02;[06] C/W MEASUREMENT FIELD MAJOR REPAIR;[07] STEP 5. C/W INSP INSTALLED FASTENERS PER SRM 51-40-02;[08] STEP 6. COMPLETED.;[09] R&R THRESHOLD PANEL PER SRM 51-40-02;[10] R&R THRESHOLD PER SRM 51-40-02

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