The phrase 'courtesy call on' is correct and can be used in written English.
This phrase is typically used to describe a visit or telephone call that is made out of politeness or expediency. For example, "I'm going to make a courtesy call on my grandparents to thank them for my birthday present."
Paid a courtesy call on Earth one Sunday morning.
He said Miliband gave him a "courtesy call" on Tuesday night to explain his decision – "it was a personal one, based on what was best for his family".
During a visit to military units in Panama, he arranged to make a courtesy call on General Noriega.
He paid a courtesy call on President Kim Dae Jung and visited with senior cabinet ministers and Kogas officials.
BANGKOK — President Obama flew around the world to visit a giant reclining Buddha and pay a courtesy call on a hospitalized king — all to make a point.
When he paid a courtesy call on the Justices, before his Inauguration in 2009, Anthony Kennedy invited him to play basketball in the Court's top-floor gym.
She will pay courtesy calls on at least two heads of state, the kings of Jordan and Saudi Arabia.
I usually approached these as courtesy calls on a man who, in large measure, had been temporarily sidelined by events, but who nonetheless remained in the mix.
The Yankees made the offer to Johnson on Dec. 17, and Cashman said he then made a courtesy call to Damon's agent, Scott Boras.
On visits to higher-end establishments, Powers and Thomas usually give a courtesy call so they can enter through the back.
While Berlusconi's one-day visit was billed as a courtesy call, certainly one pressing item on his agenda was to mollify Qaddafi on the reparations question, and it was largely in hopes of a breakthrough that some 40 Italian journalists flew into Tripoli with the prime minister.
