April 27 (Reuters) - Boeing Co reported a nearly 9 percent fall in quarterly profit, hurt by an after-tax charge related to the KC-46 aerial refueling tanker it is developing for the U.S. Air Force.
The world's largest plane maker earned $1.22 billion, or $1.83 per share, in the first quarter ended March 31, compared with $1.34 billion, or $1.87 per share, a year earlier.
The company recorded a tanker charge of $156 million or 24 cents per share in the quarter.
Core earnings, which exclude pension and other costs, fell to $1.74 per share from $1.97.
Revenue rose about 2 percent to $22.63 billion.
Commercial aircraft deliveries fell 4.3 percent to 176. (Reporting by Sweta Singh in Bengaluru; Editing by Shounak Dasgupta)