P/2£FAf!E  The information herein is designed to embody only  such material  as may  be  of value  to the pilot and the  crew of the K-airship during flight operations.  Further  descriptive matter vital  to the ship and its care is set  forth in the Specification and Maintenance Manuals.  While this manual is not intended to serve as  an  infallible gtiide  for  all flight operations, some of the  more  advanced points of aerostatics are included for ready  reference.  Amendments will be made when  significant changes  in future airships occur.  The Goodyear Aircraft Corporation welcomes  sug› gestions  for the improvement of the airship and its equip› ment,  and  invites  constructive criticism of this manual.  Such suggestions will be cordially entertained and accorded  the most careful consideration.  vii 