SELECT AVG(people_on_board) FROM table_name_48 WHERE airline = "iberia" AND aircraft_type = "lockheed l-1049g"
Berapa jumlah orang di kapal di Iberia Airline, dengan jenis pesawat Lockheed L-1049G?
CREATE TABLE table_name_48 (people_on_board INTEGER, airline VARCHAR, aircraft_type VARCHAR)