UPDATE 1-United Tech quarterly revenue up 2.7 percent; raises forecast

(Adds details from CFO interview)

July 25 (Reuters) - United Technologies Corp, maker of Otis Elevators, Pratt & Whitney engines and Carrier air conditioners, on Tuesday reported a 2.7 percent rise in quarterly revenue, helped by higher sales in three of its four business units.

Pointing to the strong organic revenue growth, which excludes foreign exchange and acquisitions, the company raised its forecast for full-year sales and lifted the low end of its range for adjusted earnings.

"The top line continues to come in," Chief Financial Officer Akhil Johri said in an interview, referring to revenue.

The company plans to deliver 350 to 400 Pratt Geared Turbofan engines this year, despite a temporary supply chain problem that required the company to retest some engines in the second quarter.

"It did cause a problem to Airbus, no doubt," Johri said, referring to a big customer.

Johri added: "Our production issues are pretty much in control. We understand what needs to be done. There is more capacity coming, we are improving, increasing our production every day, and therefore feel pretty good about 350 to 400."

United Tech shares rose 1 percent to $124.35 in light premarket trading.

Pratt built 145 engines in the first half, seven more than in all of last year, and is accelerating production, he said, adding that engine deliveries in the fourth quarter would be greater than in the third quarter.

Income from continuing operations rose to $1.44 billion, or $1.80 per share, in the quarter, from $1.43 billion, or $1.71 per share, a year earlier.

Adjusted earnings rose to $1.85 per share, compared with $1.82 a year earlier. Analysts expected $1.78, according to Thomson Reuters I/B/E/S.

Net sales rose to $15.28 billion from $14.87 billion.

United Tech raised the lower end of its 2017 adjusted earnings forecast to $6.45 from $6.30 per share, while keeping the upper end unchanged at $6.60.

It lifted its sales forecast to $58.5 billion to $59.5 billion, from $57.5 billion to $59 billion. (Reporting by Alwyn Scott in New York and Ankit Ajmera in Bengaluru; Editing by Amrutha Gayathri and Jeffrey Benkoe)