| 
                            
                                |  |  
                                |   |  
		                        | National Stock Number:
 1560-01-322-1722
 
 Federal Supply Class:
 1560
 
 National Item Identification Number:
 013221722
 
 Description:
 RIB,STIFFENER,AIRCRAFT
 
 Detail:
 A VERTICAL, RELATIVELY SHORT, RIB LOCATED IN A FUSELAGE, NACELLE, POD, AND THE LIKE. IT FOLLOWS THE PERIPHERY AND PROVIDES ADDITIONAL RIGIDITY. IT MAY JOIN VARIOUS COMPONENTS SUCH AS STRINGERS, LONGERONS, AND THE LIKE. IT IS SUPPLEMENTARY TO THE FRAMES AND BLUKHEADS. SEE ALSO RIB (1), AIRFOIL.
 |  
		                        | 
 Manufacturer Information:
 
 | 70215-42406-124 | 78286 | SIKORSKY AIRCRAFT CORPORATION | 
 |  
					            | 
 Techincal Specification:
 
 | SPECIFICATION/STANDARD DATA | 78286-70215-42406 MANUFACTURERS STANDARD | 
 |  |