I did my best.

1:10 ATC: 737 Zulu Delta San Francisco Tower, remain clear of the San Francisco Fox Bravo airspace [ed: I believe Bravo refers to the SF Class B airspace, not sure what the Fox is]. Contact San Carlos Tower

1:17 737 Zulu Delta Pilot: Contacting San Carlos Tower and remaining clear.

1:22 ATC: 305 start leaving the Bravo airspace and 2 miles .. terminate ... maintain the appropriate stage ..

1:27 ATC: (inaudible) is closed San Francisco Tower (inaudible)

(inaudible command to Horizon 635 from ATC)

1:34 ATC: He's got a 214 heavy, San Francisco Tower

1:37 ATC: Asiana (inaudible)

1:42 635 Pilot: 635 going around.

143 ATC: 635 fly heading 2-6-5 maintain 3100 (ft).

1:46 635 Pilot: 265 3100 - alright 635.

Asiana (inaudible)

1:51 ATC: Asiana 214 heavy emergency vehicles are responding, we have everyone on their way

1:57 ATC: SkyWest 5452 san francisco tower go around

2:00 SkyWest 5452: Go around Skywards 5452

2:03 ATC: SkyWest 5452 fly heading 2-8-0 maintain 3000 ft.

2:07 SkyWest 5452 Pilot: 280 and 3000, SkyWest 5452.

2:10 Horizon 635 fly heading 2-6-5 maintain 3100

2:13 635 Pilot: Yes sir 265 3100, Horizon 635

2:16 ATC: Contact NORCAL reports for 135.1

2:19 635 Pilot: 35.1 - Horizon 635

2:22 SkyWest 5452 contact NORCAL reports for 135.1

2:25 5452 Pilot: 35.1

2:27 6039 Pilot: 6039 will go to San Jose

2:31 ATC: SkyWest 6039 roger. Contact NORCAL for departure

2:35 ATC: (inaudible) SkyWest 6389

2:39 ATC: rescue 33 San Francisco tower proceed to the scene cross - inaudible - the 11 San Francisco Tower proceed as requested. Cross all runways.

2:46 Rescue: San Francisco Tower 33 and rescue 11 cleared the 1.

2:50 ATC: rescue 33, rescue 11 roger.

2:54 ATC: (inaudible) Foxtrot San Francisco Tower

END.

I also listened to the ATC before descent, no talk about any failures or problems or requests for rescue before descent.

Edit: I was transcribing this when you were, apparently; but here's mine, in case we caught different things.

1:23 Tower: tells a departing helicopter to depart 2 mi straight out, turn right, squawk a certain signifier on its altimeter (standard practice), and approves a frequency change (also standard practice);

1:28 Tower: cuts out briefly and then says "..is closed, San Francisco Tower."

1:31 Tower: silence, then starts to tell a Horizon flight something and the Asiana pilot cuts in with [hard to hear, best guess]"San Francisco?" Also, Sounds to me like they put Asiana 214 on a priority channel over other flight traffic, or that the tower cut itself/other pilots off when they saw/heard Asiana 214 was speaking.

1:36 Tower: Asiana 214 Heavy, San Francisco Tower

1:37 Asiana 214: [unintelligible, but my best guess: This, uh..., how much is this, uh, where is, uh,... uh,..."]

1:42 Horizon 635: 635 is going around

1:43 Tower: Horizon 635, fly heading 265, maintain 3100

1:46 Horizon 635: 265, 3100, Horizon 635

1:49: Asiana 214 [garbled]: San Francisco?

1:52 Tower: Asiana 214 Heavy, emergency vehicles are responding; they have everyone on their way.

1:56 Asiana 214: [garbled, definitely a few words and then a static burst]

1:58 Tower: Skywest 5452, San Francisco Tower, go around.

2:00 Skywest 5452: Go around, Skywest 5452

2:30 Tower: Skywest 5452, fly heading 280, maintain 3000.

2:07 Skywest 5452: 280 at 3000, Skywest 5452

2:10 Tower: Horizon 635, fly heading 265, maintain 3100.

2:14 Horizon 635: Yessir, 265, 3100, Horizon 635.

2:17 Tower: Contract North Cal departure 135.1.

2:19 Horizon 635: 35.1, Horizon 635.

2:22 Tower: Skywest 5452, contact North Cal departure 135.1.

2:26 Skywest 5452: 35 1.

2:28 Skywest 6389: 6389 We'll go to San Jose.

2:30 Tower: Skywest 6389, Roger. And, uh, contact North Cal departure.

2:34 Skywest 6389 [garbled]: What's the... frequency for that?

2:36 Tower [garbled at start]: [garbled] point 1, Skywest 6389.

2:39 Tower [garbled at start]: Rescue three three, San Francisco Tower, proceed to the scene, cross runway; [garbled, maybe "Rescue"] eleven, San Francisco Tower, proceed as requested, cross all [garbled, "runways"?]

2:46 Rescue 11: San Francisco Tower, [garbled, maybe "Rescue 33"] and Rescue 11, cleared to one.

2:50 Tower: Rescue 33, Rescue 11, roger.

2:54 Tower: [garbled] Foxtrot, San Francisco Tower

[end transcript]

The "Fox Bravo" is actually "Class Bravo", and you're right, it's a reference to the SFO Class B airspace. I can't edit my comment any more or I would fix it there...

Your "6039" should be "6389". It was only clearly audible the last time on the tape, the previous couple times it did sound like 6039 due to interference.

Apparently I was doing this simultaneously with you; oops.

Any idea what stage of landing 214 was at when mention emergency vehicles? Had it hit the ground?

>Had it hit the ground?

Yes, that was post-crash.

Thank you. Amazing job. Was hard to understand the audio.

Yeah, I have listened in on some air traffic controller streams that are available online and it's always hard to decipher what it is they are saying. It all sounds like words slurred together with no clear demarcation. I am mostly amazed how pilots and the controllers clearly understand each speaking the way they do.

The engineering term to google is data redundancy with a bit of communication theory and stuff like that.

0:32-0:36 Tower: "Skywest 5452, San Francisco Tower, runway 28 right, cleared to land"

0:36-0:38 Skywest 5452 pilot: "Clear to land, 28 right, Skywest 5452"

This looks like 6 seconds of jargon containing about 25 words, but it really only contains one single bit of information that being that in the giant state machine of flowchart of flying a plane, everyone mutually agrees its your turn to click forward precisely one step. Once you look at it that way, the "conceptual bit rate" drops dramatically lower. 5452 probably expected to get 28R all along, and based on where he was probably expected to get clearance "right about then" too.

"Hey you, its me, you can land over there"

"Hey you, its me, I think heard you say I can land over there" (with the implied, if I misheard, you'd best start yelling right about now either at me or at everyone else to get out of my way)

When its just business as usual, things click along awful fast. When ATC gives out some "unpredictable" order or a pilot has a weird request, there's always a very dramatic pause due to cognitive load. I can have my scanner monitoring the local tower for fun and Very quickly you learn to tune out BAU chatter until/unless weird tempo strikes. You can also tell purely by cadence and tempo with near perfect accuracy if the pilot is a local or a noob in general or a distant traveler.

Also, kudos to the tower. It is seriously an amazing thing they do, and to stay cool and calm and efficient all during a crash, to keep the rest of the traffic clear and headed in the right direction.

It's part learned jargon and part ritual... also (though I don't know) probably easier to hear in a headset than on a low bitrate mp3 recording.