For Dave Kyu, the messages hovering over Philadelphia would represent almost two years of work. But his masterpiece would literally fade away in minutes.
Midday Sunday, five World War II-style aircraft took offย from Long Island to make the 45-minute trip to Philadelphia to realize Kyuโs project,ย Write Sky.
The planesย would spell out three messages, composed by teams of people who live andย work in Philadelphia’sย Callowhill neighborhood, above the entire city.

โI canโt believe weโre actually here,โ saidย Kyu, a resident artist at the Asian Arts Initiative.
For each of three dates they had to cancel over the past year-and-a-half, he said, there had been four others considered. The sky Sunday was a little bit cloudier than ideal but Kyu had given the pilots the verbal OK to take off.
This was the last possible date this year, before the planes fly south for the winter to perform at airshows.
โAnd I just couldnโt go on, emotionally, next year,โ he admits.
The planes would not perform what most people think of as skywriting, i.e. a looping airplane trailing a continuous message. The GEICO Skytypers perform whatโs called โsky-typing.โ Flying in formation, the five planes spell out words, as if typed out by a dot matrix printer. They โwriteโ in bursts of canola oil, injected into their exhaust.
The cost for this would normally run about $16,000. Chief Skytyperย Larry Arken, who Kyu says has a day job as a pilot for American Airlines, had cut Kyu a generous deal, donating the airmenโs time.

The watch gathering on the grassy spur of theย Reading Viaduct had the feel of a neighborhood block party. Kyuโs mother was on the grill, making hot dogs and hamburgers. Representatives of the three teams that had composed the messages over a year ago had arrived.
โEveryone has a book of ideas and skills,โ saidย Chris Thompson, โwhich donโt match up.โ
Thompson, the secretary of Callowhill hackerspace Hive76, worked with a group of artists from another of the neighborhood’sย converted industrial buildings, 319 N. 11th St. In this case, he had the collective resources of Kyu, who had the planes, and the artists, who helped craft the perfect message.
Rejected ideas included: the hexadecimal code for blue and โWHEEE.โ
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After much anticipation, the Skytypers appeared in the sky around 12:40 p.m. They make two big loops over Center City, revealing the secret messages to Philadelphia one letter at a time.
Friends of the Reading Viaduct, a group organizing to create a park on the old railroad viaduct, chose:
โWHEN YOU WISH UPON A PARKโ
Teachers from Roman Catholic High School and the Folk Arts-Cultural Treasures Charter Schoolย (FACTS) in Chinatown North had composed a message in three languages, Latin, Chinese and English.
And the team of Hive76 members and the artists had finally settled on a phrase they imagined might be sent as an intimate text message:
โSTILL HEREโ
Dear #Philly, I wanted to show you something great today. Thanks to all who looked up & said, “this is worth my time.” #WriteSky
โ Dave Kyu (@DaveyDumplings) September 14, 2014