The pilot of an airliner requested a clearance from 25,000 feet to cruise altitude of 31,000 feet. The conversation went something like this:
United 402: "United 402 requesting climb to flight level 310"
ATC: "United 402 maintain flight level 250 for noise abatement".
United 402: "What do you mean maintain 250 'for noise abatement'?".
ATC: "If you climb and hit the traffic at 270, there will be a big noise.".
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Supposedly Heard On The Air (said with a slow, Eton type accent)...
BOAC: Heathrow Centre, British Airways Speedbird Flight 723
HC: British Airways Speedbird Flight 723, Heathrow Centre, go ahead
BOAC: Heathrow Centre, British Airways Speedbird Flight 723 has a message for you
HC: British Airways Speedbird Flight 723, Heathrow Centre is ready to copy message
BOAC: Heathrow Centre, British Airways Speedbird Flight 723, message is as follows: Mayday, Mayday, Mayday ....
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Lots of commercial aircraft are stacked up waiting for approach to O'Hare Int'l, ATC has inflicted numerous delays, and some planes are already 1-2 hours late. The WX is good, it's just that there is a traffic bottleneck somewhere. Pilots, passengers, crew are all getting quite frustrated and angry.
ATC: "All aircraft holding, expect 20 minutes additional delay."
Unknown A/C: "Ahhh . . . bullsh*t!"
ATC: "Aircraft making last transmission, identify yourself."
(silence)
ATC: "Aircraft making last transmission, identify yourself immediately!"
(silence)
ATC: "Aircraft using 'bullshit' in last transmission, identify yourself.
American 411, was that you?"
American 411: "Approach, American 411: negative on the 'bullshit,' sir."
NW 202: "Approach, NW 202: negative on the 'bullshit.'"
Delta 55: "Approach, Delta 55: negative on the 'bullshit.'"
NW 33: "Approach, NW 33: we have a negative on that 'bullshit.'"
. . . and so on, right through the entire pattern.
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Scene 1: it's night over Las Vegas, information Hotel is current and mooney 33W is unfamiliar with procedure and talking to approach control...
Approach: 33W confirm you have hotel.
33W: Uhhhmm, we're flying into McCarren International. Uhhhmm, we don't have a hotel room yet.
approach control was laughing too hard to respond. The next several calls went like this:
Approach: United 5, descend to FL220.
United 5: United 5 down to FL220; we don't have a hotel room either.

