What is associated with: a pilot 1937 gas is running lowwe are flying at 1000 feet?

What is referred to by 'a pigmentless african ungulate'? Based on the clue 'a pigtail once mandatory in the british army', what is the answer? What is referred to by 'a pile of pancakes'? Based on the clue 'a pill or a pad of paper', what is the answer? Based on the clue 'a pilot who flies in position behind to the side ...', what is the answer? Based on the clue 'a pilot who shoots down 5 enemy planes becomes one...', what is the answer? What is associated with: a pilots wife in 1986s top gun meg joined the military in this 1996 film? Based on the clue 'a pin puller operates these in the yard to shunt c...', what is the answer?