An emb-145 flight crew; unable to raise their landing gear following receipt of an air/ground switch...

Attributes
ACN	1016129
Time
Date	201206
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Tower
State Reference	US
Aircraft 1
Make Model Name	EMB ERJ 145 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Takeoff Initial Climb
Flight Plan	IFR
Component
Aircraft Component	Gear Extend/Retract Mechanism
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Immediately after takeoff an EICAS message appeared: 'lg air/ground fail' and we were unable to move the landing gear [lever] to the up/retract position. We completed several checklists and returned for an uneventful--below max structural landing weight--landing at our departure airport. We taxied back to the gate; notified maintenance and operations and entered appropriate aml write ups.

Original NASA ASRS Text

Title: An EMB-145 flight crew; unable to raise their landing gear following receipt of an air/ground switch failure warning; returned uneventfully to their departure airport for maintenance attention.

Narrative: Immediately after takeoff an EICAS message appeared: 'LG AIR/GND FAIL' and we were unable to move the landing gear [lever] to the up/retract position. We completed several checklists and returned for an uneventful--below max structural landing weight--landing at our departure airport. We taxied back to the gate; notified Maintenance and Operations and entered appropriate AML write ups.

Data retrieved from NASA's ASRS site as of July 2013 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.

An emb-145 flight crew; unable to raise their landing gear following receipt of an air/ground switch failure warning; returned uneventfully to their departure airport for maintenance attention.