US officials are investigating how a child was apparently allowed to direct planes at New York's JFK airport - one of the country's busiest.
The probe comes after an audiotape caught the boy directing several pilots preparing for take-off last month.
In one exchange, the boy is heard saying: "JetBlue 171 contact departure." The pilot responds: "Over to departure JetBlue 171, awesome job."
The boy was apparently with his father - a certified air traffic controller.
The adult is later heard saying with a laugh: "That's what you get, guys, when the kids are out of school."
In another exchange, the child says: "MS 4-0-3, contact departure," and then adds: "Adios, amigo."
The pilot responds: "Adios, amigo."
The pilots on the tape appear to be not concerned that a child is giving them instructions.
The incident happened on 17 February, when many New York pupils were on a week-long break.
The age and name of the child and the adult on the audiotape were not immediately known.