Service difficulty report · Skin · Boeing 76731B

Difficulty date
August 10, 2026
Submitted
August 12, 2026
Operation
Air carrier
Aircraft
N664GT
Make and model
Boeing 76731B
Aircraft serial
26259
Aircraft time
114,032 hours, 18,364 cycles
Part
Skin
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

CORROSION ON LOWER FUSELAGE SKIN AROUND DRAIN VALVE BETWEEN STA.1540 - 1562 AND BETWEEN S-39L AND S-39R. REMOVED CORROSION L = 5.290" X W = 2.215" AND ACCOMPLISHED PERMANENT CATEGORY A CORROSION DAMAGE BLEND REPAIR ON EXTERNAL SIDE OF FUSELAGE SKIN P/N 146T3241-12 AROUND DRAIN VALVE BETWEEN FS1540 AND FS1562 AND BETWEEN S-39L AND S-39R IAW STE SAA EA# 767-5360-28-B0756 REV I/R DATED JUNE 25, 2026, AND ATLAS AIR EA-6753A316 REV. 0 DATED 11JUL 26. CLASSIFIED AS MAJOR REPAIR, APPROVED 8100-9 ISSUED. NO FURTHER DEFECTS NOTED.

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