aro ▁ ▁AB EC ▁ ▁Allen ▁A ircraft ▁Engine ▁Co ▁— ▁US ▁ ▁Alliance ▁A ircraft ▁Cor p ▁▁ ▁Al lied ▁A viation ▁Cor p ▁ ▁Al lied Sign al ▁— ▁US ▁ ▁All is - Ch al mers ▁ ▁All ison ▁Engine ▁Company ▁— ▁US ▁ ▁Al vis ▁— ▁UK ▁ ▁A CE ▁ ▁A EC ▁ ▁American ▁Hel ic opter ▁ ▁American ▁ ▁Ang le ▁ ▁Anto in ette ▁— ▁France ▁ ▁An z ani ▁ ▁Ar dem ▁ ▁Arg us ▁Mot oren ▁— ▁Germany ▁ ▁Arm strong ▁Sid de ley ▁— ▁UK ▁ ▁Ar row ▁A ircraft ▁and ▁Mot ors ▁ ▁Ar row ▁S NC ▁— ▁Italy ▁ ▁Ar sen al ▁ ▁Ash mus en ▁ ▁Asp in ▁ ▁A ster ▁ ▁A stra ▁Av io ane ▁Ar ad ▁– ▁Roman ia ▁ ▁At wood ▁ ▁A ub ier ▁& ▁Dun ne ▁ ▁Aust ro ▁Engine ▁— ▁Austria ▁ ▁Aust ro - Da im ler ▁— ▁Austria ▁ ▁A via ▁Narod ny ▁Pod nik ▁▁ ▁A via ▁— ▁Czech oslov ak ia ▁ ▁A vi adv ig atel ▁– ▁Russia ▁ ▁Av io ▁– ▁Italy ▁ ▁Av ro ▁Canada ▁ ▁Av ro ▁ ▁Ax el son ▁ ▁Ax ial ▁Vector ▁Engine ▁Corporation ▁( D yna - Cam ) ▁ ▁B ▁▁ ▁Bas se ▁und ▁Sel ve ▁ ▁B ates ▁ ▁Be ard more ▁ ▁Be ard more - H alf ord - P ull inger ▁( B . H . P .) ▁ ▁Beat ty ▁ ▁Ba iley ▁A viation