[ACARS] Unusual Oceanic Clearance Request Message

Fri, 20 Dec 2002 09:26:27 +0000

Dick

Looking at my logs then I think he got no reply and then corrected his 
mistake. Normally an Oceanic request is followed by an 'ack' message. In 
this case all that happened were two 'link test' messages. After that a 
correct format request was issued. That was followed by a whole slew of 
'ack' messages. One might surmise that at least one was a request to contact 
Shanwick by voice and have a discussion about FL - he asked for 360, max. 
380 and was cleared at 340: normally they would offer him another track at a 
higher level and often the request from BA aircraft contains an NBT (Next 
Best Track) identity

The clearance was followed by the usual 'ack'

A bit of a surmise ....

Happy Christmas to all our readers and good logging in 2003

With special thanks to Bart & Bill Croy for the regular updates of the new 
aircraft

Ed

ACARS mode: E  Aircraft reg: .G-BNLX
Message label: B1  Block id: 1  Msg. no: M07A
Flight id: BA0223
Message content:-
/YQXXRAC.OC1/RCL 024
BAW223-DOGAL/1604 M085F360
-RMK/MAX FL3804141
-----------------------------------------------------------[17/12/2002 
14:56]

ACARS mode: G  Aircraft reg: .G-BNLX
Message label: Q0  Block id: 2  Msg. no: S08A
Flight id: BA0223
-----------------------------------------------------------[17/12/2002 
15:02]

ACARS mode: E  Aircraft reg: .G-BNLX
Message label: Q0  Block id: 3  Msg. no: S09A
Flight id: BA0223
-----------------------------------------------------------[17/12/2002 
15:03]

ACARS mode: E  Aircraft reg: .G-BNLX
Message label: B1  Block id: 4  Msg. no: M10A
Flight id: BA0223
Message content:-
/PIKCLXS.OC1/RCL 024
BAW223-DOGAL/1604 M085F360
-RMK/MAX FL3804141
-----------------------------------------------------------[17/12/2002 
15:03]

ACARS mode: E  Aircraft reg: .G-BNLX
Message label: _  Block id: 5  Msg. no: S11A
Flight id: BA0223
-----------------------------------------------------------[17/12/2002 
15:03]

ACARS mode: E  Aircraft reg: .G-BNLX
Message label: _  Block id: 6  Msg. no: S12A
Flight id: BA0223
-----------------------------------------------------------[17/12/2002 
15:04]

ACARS mode: E  Aircraft reg: .G-BNLX
Message label: _  Block id: 7  Msg. no: S13A
Flight id: BA0223
-----------------------------------------------------------[17/12/2002 
15:04]

ACARS mode: E  Aircraft reg: .G-BNLX
Message label: _  Block id: 8  Msg. no: S14A
Flight id: BA0223
-----------------------------------------------------------[17/12/2002 
15:07]

ACARS mode: E  Aircraft reg: .G-BNLX
Message label: _  Block id: 9  Msg. no: S15A
Flight id: BA0223
-----------------------------------------------------------[17/12/2002 
15:07]

ACARS mode: G  Aircraft reg: .G-BNLX
Message label: Q0  Block id: 0  Msg. no: S16A
Flight id: BA0223
-----------------------------------------------------------[17/12/2002 
15:08]

ACARS mode: G  Aircraft reg: .G-BNLX
Message label: B2  Block id: 1  Msg. no: M17A
Flight id: BA0223
Message content:-
/PIKCLYA.OC1/CLA 1516 021217 EGGX
CLRNCE 915
BAW223 CLRD TO KIAD VIA
DOGAL
NAT BRAVO
DOGAL 55/20 55/30 56/40
55/50 OYSTR STEAM
FM DOGAL/1604 MNTN F340
M085
ATC/LEVEL CHANGE
END OF MESSAGECE1D
-----------------------------------------------------------[17/12/2002 
15:08]

ACARS mode: G  Aircraft reg: .G-BNLX
Message label: _  Block id: 2  Msg. no: S18A
Flight id: BA0223
-----------------------------------------------------------[17/12/2002 
15:08]

ACARS mode: E  Aircraft reg: .G-BNLX
Message label: Q0  Block id: 3  Msg. no: S19A
Flight id: BA0223
-----------------------------------------------------------[17/12/2002 
15:08]

>From: "Richard J Ware" <[email protected]>
>Reply-To: [email protected]
>To: "The ACARS Group" <[email protected]>
>Subject: [ACARS] Unusual Oceanic Clearance Request Message
>Date: Tue, 17 Dec 2002 15:35:05 -0000
>
>
>G'day troops,
>
>I happened to spot this msg in my log for today (17th):
>
>ACARS mode: E  Aircraft reg: .G-BNLX
>Message label: B1  Block id: 1  Msg. no: M07A
>Flight id: BA0223
>Message content:-
>/YQXXRAC.OC1/RCL 024
>BAW223-DOGAL/1604 M085F360
>-RMK/MAX FL3804141
>-------------------------------------[17/12/2002 15:04]
>
>OK, so it's an Oceanic Clearance Request message; you don't need to have 
>the
>brains of Einstein or the wisdom of Solomon to work that one out :-)
>
>What is unique is the address in the first line of the message content.
>Normally Westbound clearance msgs are addressed to PIKCLXS, but this one
>seems to have been sent to Gander/YQXX instead of Prestwick. Would 
>something
>like this screw the system up completely, or would the flightdeck crew just
>get an error msg explaining what they've done wrong, and why?   Just 
>curious
>:-)
>
>Rgds
>Dick
>--
>
>
>
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