Measured in flight at 11,000 feet (3,400 m), 50 °F (28 °C) rich of peak turbine inlet temperature, maximum cruise yielded 199 knots (369 km/h) true air speed and 24.7 US gallons (93 L) per hour fuel flow.

[5] In a 2006 review, Richard L. Collins of Flying magazine said of the 400: Someone asked me if I could come up with one word to describe the G1000 [equipped] Columbia 400.

The production line was restarted in October, 2009 in the Cessna Independence paint facility, at a rate of one aircraft per six months initially.

As a result, the FAA issued an Emergency Airworthiness Directive affecting seven Cessna 400s and one 350, all on the production line.

[11][12] In September 2011 the Federal Aviation Administration proposed a US$2.4M fine against the company for its failure to follow quality assurance requirements while producing fiberglass components at its plant in Chihuahua, Mexico.

The FAA also discovered 82 other aircraft parts that had been incorrectly made and not detected by the company's quality assurance.

The aircraft has not been selling well since the late-2000s recession started, with 110 delivered in 2008, the first year Cessna produced the model, 41 in 2009 and just seven sold in 2010.

The improved aircraft features a new glass cockpit panel, designed by Cessna and based on the Garmin G2000.

Called Intrinzic, it features two 14 in (36 cm) wide high definition displays and a touchscreen controller that uses an infra-red grid to accept touch commands.

[14][15][16][17] At Sun 'n Fun in March 2012 the company announced that a flight-into-known icing package would be an option on the TTx model.