Welcome Guest. Sign in or Signup

3 Answers

SID Portland One Lost Comms Procedure

Asked by: 2287 views Instrument Rating

Can someone please explain this departure procedure at PDX ?  I've gotten different people to interpret it and they all have different interpretation.
 
LOST COMMUNICATIONS: If no contact with ATC within 10 NM of airport,
continue climb to assigned altitude and proceed direct BTG VORTAC. Continue
climb on BTG R-329 within 10 NM to cross BTG VORTAC BTG R-355 CW R-055
or R-085 CW R-115 at or above 5000 feet. Continue climb on course.

Ace Any FAA Written Test!
Actual FAA Questions / Free Lifetime Updates
The best explanations in the business
Fast, efficient study.
Pass Your Checkride With Confidence!
FAA Practical Test prep that reflects actual checkrides.
Any checkride: Airplane, Helicopter, Glider, etc.
Written and maintained by actual pilot examiners and master CFIs.
The World's Most Trusted eLogbook
Be Organized, Current, Professional, and Safe.
Highly customizable - for student pilots through pros.
Free Transition Service for users of other eLogs.
Our sincere thanks to pilots such as yourself who support AskACFI while helping themselves by using the awesome PC, Mac, iPhone/iPad, and Android aviation apps of our sponsors.

3 Answers

  1. Best Answer


    John D Collins on Nov 10, 2016

    Parsing the lost communications instructions:

    “If no contact with ATC within 10 NM of airport,continue climb to assigned altitude and proceed direct BTG VORTAC.”

    The first sentence is straight forward and should not need to be explained. Direct to BTG.

    “Continue climb on BTG R-329 within 10 NM to cross BTG VORTAC”

    I take this to mean after crossing BTG VORTAC, you would turn and intercept the 329 radial and track it outbound, then do a course reversal (say a 90-270) so that you remain within 10 NM of the BTG VORTAC and track the 329 radial back inbound to BTG.

    “BTG R-355 CW R-055 or R-085 CW R-115 at or above 5000 feet. Continue climb on course.”

    I take this to mean to depart BTG VORTAC between one of two acceptable wedges, any radial between BTG 355 radial clockwise to BTG 055 radial is one acceptable climb wedge and the other acceptable climb wedge is BTG 085 radial clockwise to BTG 115 radial. Continue the climb in the chosen wedge until reaching 5000, then the remainder of the climb should be on course to your first point in your route.

    +2 Votes Thumb up 2 Votes Thumb down 0 Votes



  2. CFI on Nov 11, 2016

    Thanks so far John, your explanation helped clear this up a little more.

    So i think that means i have 3 options for climbing.
    329 radial with procedure turn, or either of those other climb wedges. Now would i pick any of the radials that define the climb wedge and just climb on the radial with procedure turn or could i do a hold using one of those radials as the inbound course?

    Last question, once i get to the desired altitude required for the airway i filed, then i could cross the btg vor and proceed on course. I see there is an airway from btg that goes southeast that has an MEA 7000. So i think that means if i was to fly that airway, i would climb in the wedge until 7000, then i could proceed on V520.

    I looked at the terrain around BTG vor and

    0 Votes Thumb up 0 Votes Thumb down 0 Votes



  3. atcfinest on Nov 21, 2016

    I agree with Mr. Collins. From the ATC side, it looks like the 2 wedges are departure gates you should highly consider taking, especially if you are nordo and ifr. In terms of climbing to 7,000′, so long as you cross the 10 DME at 5,000′ you are in compliance. If your truly nordo, remember that you are expected to climb to 7,000′ 10 minutes after departure. I’m not geographically familiar with PDX, but if you are going to be too low within the first 10 mins, then yes – continue climbing to comply with the MEA.

    Please remember to squawk 7600 when that happens.

    0 Votes Thumb up 0 Votes Thumb down 0 Votes


The following terms have been auto-detected the question above and any answers or discussion provided. Click on a term to see its definition from the Dauntless Aviation JargonBuster Glossary.

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.