Airliners.net

novice

RE: Signif Of The 40- To 100-knot Call During T/O Roll

<table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, Helvetica, Geneva" color="#9A9DA0">Quoting <a href="/profile/BoeingGuy" class="quote" target="_blank">BoeingGuy</a> (<a href="#4" class="quote">Reply 4</a>):<br/><i>I've heard "Eighty" and I've heard "Eigh...

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novice

Signif Of The 40- To 100-knot Call During T/O Roll

Abstract: The 40- to 100-knot call during the T/O (Takeoff) roll is used to check the requirements that need to be established by the called speed. These requirements include 1.Directional control surface (vertical tailplane) starts to become effective with all engines operating. 2.T/O engine pressu...

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novice

RE: Basic Parameters Of An Aircrafts Electrical System

Thanks for clarifying that fr8mech makes sense now.

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novice

RE: Basic Parameters Of An Aircrafts Electrical System

I don't understand why can't the external power units can not be controlled by the aircraft if the aircraft can control the speed of the APU which therefore controls the frequency of the generator output? <table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, ...

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novice

RE: Basic Parameters Of An Aircrafts Electrical System

'Airbuster' what is the type that the information is correct for? <table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, Helvetica, Geneva" color="#9A9DA0">Quoting <a href="/profile/fr8mech" class="quote" target="_blank">fr8mech</a> (<a href="#1" class="quote"...

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novice

Basic Parameters Of An Aircrafts Electrical System

From my notes it states that the basic parameters of an aircraft's electrical system are 1. No paralleling of the ac sources of power. 2. All generator bus sources have to be manually connected through the movement of a switch that also will disconnect any previously existing source. Can anyone expl...

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novice

RE: Instrument Approach Using Vnav

Thanks for the reply's guys

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novice

RE: The Passenger Oxygen System

Thanks for the replys guys much appreciated

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novice

The Passenger Oxygen System

Abstract: "How is the passenger oxygen system activated? The passenger oxygen system is activated either by the flight crew manually automatically by a barometric controller that releases locking pins that allow the masks to drop from their overhead compartment whenever it senses a 14,000-ft cabin a...

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novice

Instrument Approach Using Vnav

From a Boeing 737-800 checklist I've been looking over under the title 'Instrument approach using VNAV' it states; "The recommended roll modes for the final approach are: For a VOR or NDB approach use LNAV For a LOC, approach use VOR/LOC" What is the difference between a VOR and a Localiser approach...

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novice

RE: Fusible Tire Plugs?

fr8mech "Ask yourself why that is better than being able to replace a melted fuse plug during overhaul." I didn't realise that the fuse plug melted too? i thought the plug was attached to the wheel hub via meltabe fusible alloy which when melted blew out the plug due to the tyre pressure and if this...

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novice

RE: Fusible Tire Plugs?

This is gettting a bit trivial, though i can't see why then in the delevopment of the wheel hub it wouldn't include another speciqalized process whereby inserting a hole from the internal wheel hub to the external and filling the top part of the hole with fusible alloy which melts at a certain temp ...

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novice

Fusible Tire Plugs?

"Fusible plugs offer protection from tire blowouts caused by thermal expansion that is generated in the tire under exrta hard braking conditions. These fusible plugs are fitted in the tubless wheel hubs by means of a fusible alloy that melts under excessive heat conditions and allows the plug to be ...

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novice

RE: Nose Wheel Shimmy

Thanks a lot for your help guys much appreciated! @fr8mech them pictures really helped

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novice

RE: Nose Wheel Shimmy

Thnaks for the reply HAWK21M

Are aircraft hubcaps just the same as rims for a car and wheel bearing the screws and nuts that attach the wheel to the landing gear?

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novice

Nose Wheel Shimmy

"Nose wheel shimmy is unstable swiveling oscillation of the nose wheel due to the flexibility of the tire sidewalls, especially at high speed. Excessive shimmy can vibrate dangerously throughout the entire aircraft, causeing wear in the wheel bearings, low pressure, and wear on the undercariage link...

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novice

RE: How Do You Engage An Autothrottle System?

Thanks for the link starlionblue and that explaination Boeing Guy helped understand it

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novice

How Do You Engage An Autothrottle System?

Abstract: "This is really a type-specific question, and the reader should refer to his or her own aircraft type; however, the following answer, which is based on the b737-300 autothrottle system, is given as an example. The autothrottle is engaged by a master switch on the mode control panel (<acron...

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novice

RE: Explain The Various Autopilot Modes Of Operation

Thanks for the answers guys

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novice

Explain The Various Autopilot Modes Of Operation

Abstract: "Based on a B737-300 autopilot system, the autopilot modes of operation are normally the following: 1. Heading 2. Lateral navigation (LNAV) 3.VOR/LOC 4.Altitude hold 5.Vertical speed 6.Level change 7. Vertical navigation 8.ILS/approach" What would be the difference between heading mode and...

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novice

RE: Why Is Wind Measured In Degrees True?

<table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, Helvetica, Geneva" color="#9A9DA0">Quoting <a href="/profile/Starlionblue" class="quote" target="_blank">Starlionblue</a> (<a href="#6" class="quote">Reply 6</a>):<br/><i>If everyone still navigated by com...

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novice

RE: Why Is Wind Measured In Degrees True?

Ya i see just a different order thanks Mir

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novice

RE: Why Is Wind Measured In Degrees True?

Thanks for the reply web500sjc
I see the logic in what you're saying, though the maps that i plan from have variation lines running through them so therefore enables you to see magnetic heading from them, so i can't see the advantage of having wind in degrees true?

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novice

Why Is Wind Measured In Degrees True?

Why is wind measured in degrees true when heading are generally always measured in degrees magnetic?

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novice

RE: What Factors Affect The Range Of HF Communications

Thanks for the links guys a lot of helpful information in them

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novice

What Factors Affect The Range Of HF Communications

"The following factors affect the range of <acronym title="OLD: Hapag Lloyd (Germany), NEW: Hapagfly (Germany)">HF</acronym> communication: 1. Transmitter power 2. Frequency 3. Time of the day 4. Season 5. Location 6. Disturbance of the ionosphere" Why is it the lower the frequency the further they ...

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novice

RE: HF Transmitting

Thanks for that detailed explanation rfields5421, thats cleared that up

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novice

HF Transmitting

"The <acronym title="OLD: Hapag Lloyd (Germany), NEW: Hapagfly (Germany)">HF</acronym> band used in aviation ranges from 2 to 22 <acronym title="Mildenhall (MHZ / GXH / EGUN), United Kingdom">MHZ</acronym>. Different frequencies have different range capabilities; i.e., the higher the frequency the g...

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novice

The Turn Coordinator

"The turn coordinator is an advanced development of the earlier turn indicator. It is similar to the turn indicator instrument, except that its single gimbal is raised at the front by 30 degrees so that the instrument is sensitive to both roll and yaw, and it begins to indicate a turn as soon as the...

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novice

Difference Bet Electr AH N Air Driven Instruments

"With an electrically driven artificial horizon, acceleration and turn errors are minimized or completely eliminated because the instrument has little or no pendulosity and its normal erection system can be cut out at certain value of longitudinal or lateral (balanced turn) acceleration." Could some...

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novice

RE: The Concept Of Apparent Wander?

Thanks for the explanation 'WingedMigrator'

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novice

RE: Boeing 737ng Primary Flight Display

Thanks guys for clarifying that

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novice

RE: Boeing 737ng Primary Flight Display

Would autothrottle not maintain a certain thrust on the engines, what would be the difference between autothrottle and N1 mode?

Thanks

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novice

RE: LNAV, VNAV, RNAV. What Is The Difference?

Thanks for the reply Starlionblue

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novice

RE: Boeing 737ng Primary Flight Display

Thanks for the reply AAR90, though i still can't really distinguish between 'N1' mode and 'VNAV' mode as they both seem to be controlling auto throttle?

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novice

RE: LNAV, VNAV, RNAV. What Is The Difference?

In approach if LNAV is selected, will the aircraft carry out all the turns automatically? How come VNAV has to be deselected, at least on the company ops i'm reading is it because encase the autopilot busts minimums?

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novice

Boeing 737ng Primary Flight Display

On the flight mode indicator there are three modes displayed 'N1' 'LNAV' and 'VNAV PTH' I would like to understand these mode a bit better, i presume when 'N1' engaged alone will hold speed and the pilot flying will control lateral and vertical navigation manually? 'LNAV' and 'VNAV PTH' control late...

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novice

The Concept Of Apparent Wander?

Abstract: "If the <acronym title="OLD: Deutsche BA (Germany), NEW: Dba Luftfahrtgesellschaft (Germany)">DI</acronym> instrument is fitted with a latitude nut, it produces an opposite error to the earth's rotation (i.e., 15 x sin latitude in degrees per hour) to give an adjusted heading. If, however,...

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novice

RE: VSI Components

Cheers for that explain Tom, i recon i owe you a few pound by now for all the tutorials you've given me

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novice

VSI Components

"A static line blockage means that the static pressure in the VSI instrument capsule and case via the metering unit both remain a constant value."

What is the difference between a VSI instrument capsule, case and metering unit?

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novice

RE: VSI Dail Display

Thanks for explaining that guys and that diagram really helped cheers Tom

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novice

Boeing 737ng Flap Settings?

From what i know the Boeing 737ng has got 8 flap settings right? being; 1,2,5,10,15,25,30 and 40 does these numbers refer to degrees the angle its being reflected to the air at? if so why is there so little difference between 1,2 and 5 compared to the rest?

Thanks

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novice

VSI Dail Display

"The VSI uses a logarithmic scale display that has a greater sensitivity at small rate of climb or descent (<acronym title="Rochester - Greater Rochester International (Monroe County) (ROC / KROC), USA - New York">ROC</acronym>/ROD) values. Zero is usually at the 9 o'clock position with the <acronym...

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novice

RE: Altimeter Setting Definition

Thanks for that Pihero

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novice

Altimeter Setting Definition

Altimeter setting definition: "Altimeter setting is defined as station pressure reduced to sea level." This probably is a stupid question to ask, though i don't understand this. Using this definition for example take Denver International airport which sits at 5,000ft so does it take the pressure at ...

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novice

RE: Standard Calls Question

Thanks for your help guys, i understand the question now

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novice

Standard Calls Question

"Standard calls should be performed in accordance with the defined <acronym title="Palestinian Airlines">PF</acronym>-PNF/PM task sharing (i.e., task sharing for hand flying vs. abnormal/emergence condition)." Don't understand this sentence, would be grateful if someone could explain it also "In a s...

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novice

RE: Speedbrake

<table border="0" align="CENTER" width="95%" class="quote"><tr><td><font size="2" face="ARIAL, Helvetica, Geneva" color="#9A9DA0">Quoting <a href="/profile/tdscanuck" class="quote" target="_blank">tdscanuck</a> (<a href="#1" class="quote">Reply 1</a>):<br/><i> "Down" detent and annunciates "Spoilers...

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novice

Pressure Error

Can someone explain pressure error? in regard to one of the altimeter instrument errors

Cheers

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novice

Speedbrake

Speedbrake When the gear is lowered the speedbrake will be armed by the pilot in the left-hand seat. If the speedbrake is in use prior to being armed for landing the speedbrake lever must be moved to the down detent, the light checked out, and then moved to the armed position. What does it mean by '...

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