Service difficulty report · Tire · Boeing 7879

Difficulty date
September 4, 2026
Submitted
September 9, 2026
Operation
Air carrier
Aircraft
N27997
Make and model
Boeing 7879
Aircraft serial
68625
Aircraft time
3,666 hours, 382 cycles
System (JASC)
3244 · Tire
Part
Tire
Condition
Overspeed
Location
Zone 700
Stage of operation
TO
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

DURING TAKEOFF IN DEN, UNSURE IF TIRE SPEED MAY HAVE EXCEEDED 204 IAW ENGINEERING REPORT ER3240R01126. REVIEW OF EFAR DATA CONFIRMED NLG TIRES ARE OK AT 201.6 KNOTS (MAX = 204.2 KNOTS) AND DO NOT REQUIRE REPLACEMENT. DATA SHOWED MLG TIRES DID OVERSPEED AT 205.7 KNOTS - (MAX = 204.2 KNOTS) AND WILL REQUIRE REPLACEMENT (ALL 8 MLG TIRES). REPLACED ALL MLG WHEEL ASSEMBLIES (X8) IAW AMM DMC-B787-A-32-45-01-00A-720A-A. RAISED SEPARATE LOG PAGES FOR EACH WHEEL. NO MORE CONDITIONAL INSPECTIONS REQUIRED FOR OVERSPEED WHEEL ROTATION.

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