RVR Question

[Dharmesh1231]

How do you explain RVR? When can you and when can't you take off. What do the numbers 6-6-6 mean...Try not to give smart answers please. Thanks

 

[Uncle Bunkle]

How do you explain RVR? When can you and when can't you take off. What do the numbers 6-6-6 mean...Try not to give smart answers please. Thanks

Okay, how about a dumb answer then...Umm...if you can see, you can go. Unless you are in area code 666, then you must call collect.

 

[lear24]

. . . . .

 

[Americam]

RVR - Runway visual range. A Transmissometer measures the impeadance in the light flow from particulate in the air, and from that it can accurately determine the visibility in feet at that given station. There are typically 3 RVR stations along an RVR runway, one at the approach end, one midfield, and one at the departure end. In order to conduct a a 6-6-6 takeoff, you must have adequate visual reference to the runway, the runway centerline lights must be on, and serviceable runway centerline markings. 2 of the 3 RVR stations must be reporting at least 600 ft RVR.

A departure alternate will be required, in all cases I can think of. For a twin engine aircraft, the departure alternate must be within 1 hour of the departure airport at single engine cruise. The departure alternate must meet the standard alternate 1-2-3 rules in order to be filed as the alternate. Once en route to the alternate, standard approach minimums apply.

 

[mcjohn]

Back when I was building a little multi time in a Beech Jet I did the King Schools online RVSM training thing and for which I received an endorsement. It was quite expensive and not really worth it but I did receive a few PDF files of checklists, quick reference, and radio protocol in case of negative RVSM etc.

If anyone wants to take a look at those PDF files I could attach to an email.

Doh!!. Stupid is a stupid does. RVR not RVSM. Well anyway if anyone wants those PDFs let me know.

..Try not to give smart answers please. Thanks

Looks like I've got that one covered.

 

[Dharmesh1231]

Thanks Americam...that was pretty detailed...I am preparing for an interview. Really appreciate the help.

 

[Dharmesh1231]

Uncle bunkle....that was pretty funny...not helpful though...preparing for an eagle interview....so needed to understand this. Thanks

 

[ShutupandFly]

RVR - Runway visual range. A Transmissometer measures the impeadance in the light flow from particulate in the air, and from that it can accurately determine the visibility in feet at that given station. There are typically 3 RVR stations along an RVR runway, one at the approach end, one midfield, and one at the departure end. In order to conduct a a 6-6-6 takeoff, you must have adequate visual reference to the runway, the runway centerline lights must be on, and serviceable runway centerline markings. 2 of the 3 RVR stations must be reporting at least 600 ft RVR.

A departure alternate will be required, in all cases I can think of. For a twin engine aircraft, the departure alternate must be within 1 hour of the departure airport at single engine cruise. The departure alternate must meet the standard alternate 1-2-3 rules in order to be filed as the alternate. Once en route to the alternate, standard approach minimums apply.

Good explanation. Have to correct one thing though. The departure alternate must meet published or dirived, if you have the op spec for it, altn mins. The 1-2-3 rule is only to see if a destination altn is requiered by the far's.

 

[Amish RakeFight]

Here ya go!!!

TDZ MID ROLL RVR 600/600/600
TDZ and ROL are controlling

If one of the 3 RVR reporting systems has failed, a T/O is authorized, provided the remaining 2 RVR values are at or above the appropriate T/O minimums listed below.

Authorized:
600/600/600 + CL + RCLM
MM/600/600 + CL + RCLM (only 2 required – must be at or above 600)
600/MM/600 + CL + RCLM (only 2 required – must be at or above 600)
600/600/MM + CL + RCLM (only 2 required – must be at or above 600)

NOT Authorized:
600/MM/500 + CL + RCLM (RVR<600)
MM/500/600 + CL + RCLM (RVR<600)
600/500/600 + CL + RCLM (RVR<600)
500/600/600 + CL + RCLM (RVR<600)

Where only two transmissometers are installed, the touchdown and rollout RVR's are required and are controlling.

If three transmissometers are installed, all are controlling and the failure of any one transmissometer will not affect operations provided the remaining two RVR values are at or above appropriate minimums.

For 600 RVR you need ALL three RVR sensor readings
(except that if one is broken you can use any of the other two)

They all/both need to be at or above 600 RVR to takeoff and you need BOTH CL and RCLM to takeoff.

If they are covered with snow its a no go.

If any of the RVR readings are below 600 its a no go.

 

[Dharmesh1231]

Good Explanation Amish...will study that....

 

[cwebster2]

Good Explanation Amish...will study that....

6/6/6 isnt all there is, be sure to brush up on 1/4 vis and 1000/1000 (or 1200/1200) takeoff requirements as well.

 

[Amish RakeFight]

The OP asked about RVR 600 so that's all I listed.

Here are the other T/O RVR conditions.

RVV 1/4 or TDZ RVR 1600
TDZ RVR is controlling.
MID RVR may be substituted if TDZ RVR is NA

Authorized:
1600/MM/MM (+ HIRL or CL or RCLM or AVR*)
MM/1600/MM (+ HIRL or CL or RCLM or AVR*)


TDZ RVR 1200 & ROLL RVR 1000
TDZ RVR is controlling.
MID RVR may be substituted if TDZ RVR is NA
CL
At least 2 operative RVR systems (MID RVR may be substituted for TDZ RVR or ROLL RVR)

Authorized:
1200/MM/1000 + CL
MM/1200/1000 + CL
1200/1000/MM + CL



*AVR = Adequate Visual Reference and is defined as the ability to indentify the takeoff surface and maintan directional control. (i.e., HIRL, RCLM & CL or runway markings)

 

[Singlecoil]

Trick question:

Can you takeoff if it is 1600/500/500?

 

[35off]

No, if one of the 500 was 1000 you could.

Also to all reading this stuff make sure you look at your company ops specs. This is what most people are referring to, but just because it is in my specs does not necessarily mean it is in yours.

 

[atrdriver]

I have seen departure alternate mentioned, but if you are taking off in conditions that won't allow you to return to the takeoff airport in an emergency then you must have a takeoff alternate, which must be within 1 hours flying time on a single engine in still air.

 

[thebest]

Trick question:

Can you takeoff if it is 1600/500/500?

YES, 1600 rvr in tdz is controlling.
http://www.fmcguide.com/catalog/media/profiles.pdf

 

[Stuka Luva]

How do you explain RVR? When can you and when can't you take off. What do the numbers 6-6-6 mean...Try not to give smart answers please. Thanks

I tried, but I can't not give a smart answer.

If you've got a "A320 Type" shouldn't you already know?

 

[Hulk Hogan]

Read your Jepps. The t/o mins are listed on the 10-9 page. Another dumb interview question. If/when you get online your FOM has that stuff in it ... I'm sure as heck not relying on my memory to make that decision.

 

[35off]

which do not apply at most 121 with their own ops specs.

 

[regionalcap]

YES, 1600 rvr in tdz is controlling.
http://www.fmcguide.com/catalog/media/profiles.pdf

If all 3 are reporting, then all 3 are controlling.