Crj-700 flight crew reported loss of a main landing gear wheel on takeoff roll.

Attributes
ACN	1579414
Time
Date	201809
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 900 (CRJ900)
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Main Gear Wheel
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Person 2
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

After 1.5 hour[s] into our flight we were informed by maintenance that one of our medium large transport (main landing gear) wheels had been lost during takeoff. We had no indications that anything had occurred prior to that point. We prepared a game plan with our QRH; flight attendants; maintenance; ATC and company. We did a flyby of the tower to confirm medium large transport wheel loss and it was confirmed. We executed a go around and set up for an ILS approach on the longest runway. We landed uneventful; using limited braking and were towed off the taxiway. The wheel sheared off during takeoff; during the walk around all tires and wheels looked normal. Taxiing everything felt normal; expect one of the times we used the brakes it felt like it was a bumpy taxiway and the plane stuttered. The second time we used the brakes it was normal; so we assumed it was a bumpy taxiway; which is normal on taxiways. Nobody knows the exact cause yet.

Original NASA ASRS Text

Title: CRJ-700 flight crew reported loss of a main landing gear wheel on takeoff roll.

Narrative: After 1.5 hour[s] into our flight we were informed by Maintenance that one of our MLG (Main Landing Gear) wheels had been lost during takeoff. We had no indications that anything had occurred prior to that point. We prepared a game plan with our QRH; flight attendants; Maintenance; ATC and company. We did a flyby of the Tower to confirm MLG Wheel loss and it was confirmed. We executed a go around and set up for an ILS approach on the longest runway. We landed uneventful; using limited braking and were towed off the taxiway. The wheel sheared off during takeoff; during the walk around all tires and wheels looked normal. Taxiing everything felt normal; expect one of the times we used the brakes it felt like it was a bumpy taxiway and the plane stuttered. The second time we used the brakes it was normal; so we assumed it was a bumpy taxiway; which is normal on taxiways. Nobody knows the exact cause yet.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.