@SFOMuseum Instagram Posts This is SFO Museum's archive of the @SFOMuseum Instagram account. from April 05, 2019

With the introduction of the airplane in the early twentieth century, pilots and mechanics needed written instructions on how to properly fly these complicated machines and keep them in safe operating condition. This image was posted on April 05, 2019. #bythebook #trainingmanual #airliner #flight #maintenance #avgeek #pilots #mechanics #manuals #airplane