Related Clues:

• A Slinky "walks" down them
• Means of ascent/descent
• Flight of celebrities across north of Italy
• Steps laid down by good person with self-importance
• Way up, say
• Connecting flight, of a sort
• Connection between stories
• Ace in scariest turbulent flight
• Steps in house
• Means of moving from one floor to another
• They may be arranged in a spiral
• Famous performer carrying one item of luggage for flight
• Principal lawsuit covering the start of ill-fated flight
• We leave waitress organising apples and pears
• It's Caesar (anag.)