Service difficulty report · Beam · Boeing 74745EF

Difficulty date
July 29, 2026
Submitted
July 30, 2026
Operation
Air carrier
Aircraft
N485MC
Make and model
Boeing 74745EF
Aircraft serial
30607
Aircraft time
113,499 hours, 20,012 cycles
Part
Beam
Condition
Corroded
Location
Zone 100
Stage of operation
IN
How discovered
V
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 DOOR INNER SURFACE LOWER CLOSEOUT BEAM SURFACE CORR FROM BS 1820 - 1920 SEVERAL PLACES. CORROSION AREA REMOVED IAW SRM 51-10-02 AND REPROTECTED IAW SRM 51-20-01, REWORK AREA MEASURED ORG 0.120", L: 4" X W: 20" X D: 0.011" WITHIN SRM 52-30-02-1A-1A ALLOWABLE DAMAGE 1 FIG 101 LIMITS. NO FURTHER DEFECTS NOTED.

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