# SDR CALA2026090719272

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2026
- Submitted: September 9, 2026
- Operation: Air carrier
- Aircraft: [N27997](https://openairdocs.org/aircraft/N27997), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 68625
- Aircraft time: 3,666 hours, 382 cycles
- System (JASC): [3244 · Tire](https://openairdocs.org/jasc/3244)
- Part: Tire
- Condition: Overspeed
- Location: Zone 700
- Stage of operation: TO
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026090719272

## Discrepancy

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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