Ground time. 

 - Videocassette (VHS)(ca. 30 min.) :sd., col. 1/2 in. 
<br/><br/> Aircraft maintenance-and other jobs involved in the ground in keeping with flight saftey are discussed. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aircraft-Maintenance.<br/>Airports-Ground maintenance.