The word aircraftmen is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 21
Highest Scoring Words With Friends™ Plays In The Letters aircraftmen
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Seven Letter Word Alert: (32 words)
airfare, amentia, anaemic, animate, cantref, carinae, carmine, certain, crafter, erratic, fainter, fanatic, fancier, fireant, firearm, fireman, frantic, infarct, mariner, martian, minaret, narrate, nematic, raiment, ratrace, recraft, refract, refrain, retrain, terrain, trainer, tramcar