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why you should know the length, width and height of your airplane

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Old 10th Feb 2018, 14:29
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Beau_Peep
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why you should know the length, width and height of your airplane

How does it help to know the length, width, height of the jetliner that you fly?
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Old 10th Feb 2018, 14:46
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Height.. err.. who the hell knows.
You never know when you might want to fly under a bridge...
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Old 10th Feb 2018, 14:49
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Or through a hangar:-

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Old 10th Feb 2018, 15:34
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+1 on the wingspan re: taxiway restrictions.

Length could be useful for an airport with small apron, to make an eyeball estimation of whether the aircraft will fit through a tight space (though you should have marshallers anyway)
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Old 10th Feb 2018, 16:06
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I guess you've never taxied under the pedestrian bridge in Denver. Even though the numbers say it works, it makes you look the first time you do it.
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Old 10th Feb 2018, 16:20
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Length is useful in assessing when the tail has vacated.
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Old 10th Feb 2018, 16:55
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Hmmm very amusing ! but the list is exhaustive and a quick review of the ground charts will help cure the mystery. When taking the time do do the research look at: Turning radius, min taxi width, gate sizes, parking position restrictions, one way taxi routes for wide body, bridge requirements, stair requirements, fire cover ,etc etc .. would you try and park a articulated truck in a mini parking space?
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Old 11th Feb 2018, 02:51
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I've seen several NOTAMs daily restricting access to taxiways for aircraft of a certain wingspan (or less). Better to know where you can and can't go rather then an embarrassing or expensive mistake.
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Old 11th Feb 2018, 14:19
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There's also the bridge at London Gatwick.
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Old 11th Feb 2018, 18:42
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Originally Posted by ShyTorque
You never know when you might want to fly under a bridge...
We taxi under one at DEN.
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Old 12th Feb 2018, 09:03
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Does anyone know what the wingspan of the B737 with AviationPartners Split winglet is ?
The basic B737 with large "up" winglet is quoted as 35.7m. The gate limit is 36m for Code C. In flight the lower part of the Split winglet has more span the top tip, but the wing bends up in flight so the lower part bends out board.
It does look as though is would be very close to the 36m gate limit on the ground, and Mk 1 eye suggests the lower part sticks out further when the A/C is on the ground.
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Old 26th Feb 2018, 08:35
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Question; why are the external dimensions not placarded somewhere on the flight deck? Why should we be expected to remember them all - especially challenging in a mixed fleet.
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Old 26th Feb 2018, 08:53
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Yep... never understood that - Funny how things like flap and gear limits (which I may well be electronically protected to some extent) are on display but stuff which you might need PDQ when driving round an unfamiliar airport on a dark wet night is buried in the FCOM.
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Old 27th Feb 2018, 17:06
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I agree completely
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Old 26th Mar 2018, 15:15
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These are basic limitations and have to be known by heart.
Same for min. Turn radius, fire category, wind limits
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Old 26th Mar 2018, 18:06
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Originally Posted by flyboyike
We taxi under one at DEN.
We always used to finish off sim sessions by trying to fly under the one at LGW - I never made it..
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Old 27th Mar 2018, 01:28
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Knowing the wing span also helps when you're standing in front of the beak. Local crop duster, who was not unknown to the regulator, was in front of the beak on a charge of low flying, under a bridge in fact. He provided irrefutable evidence that the distance between bridge spans was less than the wing span, ergo, couldn't be done. Charge dismissed, but what didn't come to light was he side slipped it through.
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Old 27th Mar 2018, 01:36
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Originally Posted by IFLY_INDIGO
How does it help to know the length, width, height of the jetliner that you fly?
To impress the wimmen folk we meet on a layover ?
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Old 27th Mar 2018, 08:16
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To impress the wimmen folk we meet on a layover ?

Ah. Yet another of the 'when with women they talk of aeroplanes, and when with other pilots they talk of wimmen' brigade. Will it ever be thus? Sadly.
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Old 27th Mar 2018, 19:03
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A few quotes I found from an investigation....

“Flight crew are responsible for wingtip clearance and are reminded of the importance of maintaining a careful lookout at all times, regardless of location and visibility conditions.”

“Memo issued re ‘Wingtips – Caution when parking’ ”

“Operators were also reminded of their obligations in relation to AIP AD 2.20 - Section 1.1 and all attendees acknowledged that the responsibility for wingtip clearance rested with the pilot.”

“An ATIS message now broadcasted: “Flight Crew are responsible for wingtip clearance and shall exercise particular caution in hotspot areas. ATC instructions may not ensure wingtip clearance”. All hotspot areas are defined on the aerodrome chart in the AIP.”

I presume length & height are probably as important at some airports....
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