Key factor that enables airplane to lift

lftplane

Source

General Social Survey https://gss.norc.org

Question Which of the following is a key factor that enables an airplane to lift? (response to acceptDK) (response to probeDK)

For further details see the official GSS documentation.

Counts by year:

year	iap	air pressure beneath the wing is greater than that above the wing	don't know	engine power is greater than that of friction	no answer	pressure within the airplane is greater than that of the outside	the plane's wing is lighter than air	Total
1972	1613	-	-	-	-	-	-	1613
1973	1504	-	-	-	-	-	-	1504
1974	1484	-	-	-	-	-	-	1484
1975	1490	-	-	-	-	-	-	1490
1976	1499	-	-	-	-	-	-	1499
1977	1530	-	-	-	-	-	-	1530
1978	1532	-	-	-	-	-	-	1532
1980	1468	-	-	-	-	-	-	1468
1982	1860	-	-	-	-	-	-	1860
1983	1599	-	-	-	-	-	-	1599
1984	1473	-	-	-	-	-	-	1473
1985	1534	-	-	-	-	-	-	1534
1986	1470	-	-	-	-	-	-	1470
1987	1819	-	-	-	-	-	-	1819
1988	1481	-	-	-	-	-	-	1481
1989	1537	-	-	-	-	-	-	1537
1990	1372	-	-	-	-	-	-	1372
1991	1517	-	-	-	-	-	-	1517
1993	1606	-	-	-	-	-	-	1606
1994	2992	-	-	-	-	-	-	2992
1996	2904	-	-	-	-	-	-	2904
1998	2832	-	-	-	-	-	-	2832
2000	2817	-	-	-	-	-	-	2817
2002	2765	-	-	-	-	-	-	2765
2004	2812	-	-	-	-	-	-	2812
2006	4510	-	-	-	-	-	-	4510
2008	518	799	211	345	20	90	40	2023
2010	2044	-	-	-	-	-	-	2044
2012	1974	-	-	-	-	-	-	1974
2014	2538	-	-	-	-	-	-	2538
2016	2867	-	-	-	-	-	-	2867
2018	2348	-	-	-	-	-	-	2348
2021	4032	-	-	-	-	-	-	4032
2022	3544	-	-	-	-	-	-	3544
Total	70885	799	211	345	20	90	40	72390