Service difficulty report · Fuel Tank · Boeing 767322

Difficulty date
April 21, 2026
Submitted
April 23, 2026
Operation
Air carrier
Aircraft
N643UA
Make and model
Boeing 767322
Aircraft serial
25093
Aircraft time
136,748 hours, 21,021 cycles
Part
Fuel Tank
Condition
Leaking
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FOUND FUEL SEEPING IN LH AIR CONDITIONING BAY, PANEL 193 ABOVE PLENUM. REMOVED SEALANT AND APPLED B 1/2 SEALANT ON EXTERIOR PORTION OF LEAK AT 20:10 REF AMM 28-11-00 COMPLETED BLOWBACK LEAK DETECTION PROCEDURE AND FOUND LEAK IN SEALANT AT 3RD STRINGER IN THE 3RD BAY OF THE CENTER FUEL TANK REF AMM 28-11-00-796-111. SCRAPED OLD SEALANT ON STRINGER AND APPLIED B 1/2 SEALANT AT 20:30 IAW AMM 28-11-00-308-013 LEAK CHECKED GOOD IAW MM 28-11-00.