# airway (blogs) — RSS Amplifier Recent posts from the 6 feeds in the RSS Amplifier directory that cover airway. Page: Feed: --- ## [The British Airways UK Avios line is now 24/7 (but results are mixed)](https://www.pointswellmade.co.uk/post/no-more-midnight-calls-to-america-the-british-airways-uk-avios-line-is-now-247) _2026-08-20 · Sam · Points Well Made_ Update, 21 August 2026: Since publishing this piece we have had a number of messages and emails from readers. Some had success. Others did not. Our own experience now looks like it was in the minority. It would be unfair, then, to call this the definitive new way of booking reward seats. We would recommend keeping the US number to hand for now, just in case. I've lost track of the number of times… ## [Air France/KLM's Flying Blue devalues reward tickets from 8 September with "Light" fares at today's prices](https://www.pointswellmade.co.uk/post/air-france-klm-flying-blue-devalues-reward-ticket-from-8-september-with-light-fares-at-todays-prices) _2026-08-19 · Sam · Points Well Made_ We need to have a talk about devaluations, because that's what Air France/KLM are doing with their Flying Blue programme. But the way they're devaluing their programme may not be the way you expect. Three ways a programme can devalue your redemptiom I'd argue that a loyalty programme can take value off you in three ways. It can put up the number of points needed, like BA did in December 2025. It… ## [Reminder: get up to 15,000 points just for switching your broadband](https://www.pointswellmade.co.uk/post/reminder-get-up-to-15-000-points-just-for-switching-your-broadband) _2026-08-18 · Sam · Points Well Made_ I'm currently going through one of life's many pleasures by talking (screaming internally) to Virgin Media attempting to renew our broadband for another year, pleading for a price that doesn't make me want to go through the switching to another provider because I'm already quite busy, something I'm sure you can relate to! Considering how my live chat experience is going, I may soon be looking for… ## [One of Avios’ sweetest redemptions: Trip review of Loganair, Heathrow-Kirkwall via Dundee](https://www.pointswellmade.co.uk/post/one-of-avios-sweetest-redemptions-review-of-loganair-heathrow-kirkwall-via-dundee) _2026-08-17 · Guest Writer · Points Well Made_ In our third guest post, today's post has been kindly written by Robbie Watson, on Instagram as @robbiewatson, where you can follow along with his travels, whether that's extreme day trips, value/points led trips, cruises, or taking trips to less well travelled parts of the world. If you'd like to guest write, just simply DM us on Instagram or email sam@pointswellmade.co.uk with an idea, and we… ## [Revolut x Avios: 20% bonus Avios when converting RevPoints](https://www.pointswellmade.co.uk/post/revolut-x-avios-20-bonus-avios-when-converting-revpoints) _2026-08-17 · Helena · Points Well Made_ A short and sweet one from us today. Long have we bemoaned the fact we rarely, if ever, get to see the bonus point conversions our American brothers and sisters enjoy. Every few months another US bank runs a juicy transfer bonus to Avios or another airline programme, and those of us on this side of the pond just watch on wistfully. Well, for once, we've actually got something worth talking about.… ## [About Survey Mark Hunting](https://thesurveystation.com/about-survey-mark-hunting/) _2026-08-16 · (untitled)_ The What NGS Triangulation Station BEAUTIFUL Survey marks or monuments are objects used to mark a precise location and/or elevation on the earth. The markers most survey mark hunters look for most often are 4-inch brass or aluminum disks installed into a stable setting like bedrock, an embedded boulder, a specially-poured concrete monument, a large building or bridge. Earlier survey monuments were… ## [Agencies](https://thesurveystation.com/agencies/) _2026-08-16 · (untitled)_ Agencies Agencies that establish survey markers Adirondack Surveys Aquatrak Army Corps of Engineers AT&T AZDOT Boston Museum of Science Bureau of Land Management Central Railroad of New Jersey City of Hazleton Clark County Surveyor’s Office County of Carbon Defense Map Agency Delaware-Hudson Land Surveyors Association Delaware and Hudson Railroad Delaware Dept. of Highways and Transportation Erie… ## [Airway Beacons List—Eastern U.S.](https://thesurveystation.com/airway-beacons-list-eastern-u-s/) _2026-08-16 · (untitled)_ Last updated August 16, 2026 For airway beacons in the western U.S., see: Airway Beacons List—Western U.S. The following is an incomplete list of airway beacons and arrows. The original list, compiled by Roger Barnes in 2003, was drawn from the NGS database of survey marks. In recent years, many other contributors have shared their knowledge and added other beacon and arrow sites to the list. Many… ## [Map of Airway Beacons](https://thesurveystation.com/map-of-ngs-airway-beacons/) _2026-08-16 · (untitled)_ ## [Airway Beacons List—Western U.S.](https://thesurveystation.com/airway-beacons-list-western-u-s/) _2026-08-16 · (untitled)_ Last updated August 16, 2026 For airway beacons in the eastern U.S., see: Airway Beacons List—Eastern U.S. The following is an incomplete list of airway beacons and arrows. The original list, compiled by Roger Barnes in 2003, was drawn from the NGS database of survey marks. In recent years, many other contributors have shared their knowledge and added other beacon and arrow sites to the list. Many… ## [Open directory of blogs (Sponsored)](https://crawlproof.com/a/h4grqyJliJ86) _2026-08-16 · **Sponsored**_ Drop URLs or OPML — get per-blog pages plus machine-readable JSON, OPML, text ## [Airway Beacons](https://thesurveystation.com/airway-beacons/) _2026-08-16 · (untitled)_ Airway Beacons Why airway beacons? Light for the Night Air Mail Why airway beacons, on a site dedicated to survey marks? Apart from their obvious connection as objects that helped to build the current American infrastructure, airway beacons and survey marks are connected in another, more obscure way: through the National Geodetic Survey database. In 2003 a fellow geocacher/survey mark hunter,… ## [All Points](https://thesurveystation.com/all-points/) _2026-08-16 · (untitled)_ "32 JPN",Not Found,Unknown (Not Found),2026-08-16T09:03:00-04:00,/surveymarks/32-jpn/,-75.69892416,41.4936352,"" "TT 7 K RM",Not Found,Unknown (Not Found),2026-08-08T09:08:00-04:00,/reference-marks/tt-7-k-rm/,-75.810099,41.753923,"" "TT 7 K",Recovered,Good,2026-08-08T09:03:00-04:00,/surveymarks/tt-7-k/,-75.80743,41.754027,https://images.planetzhanna.com/2026/08/08/thumbnails/tt7kcsm.jpg "PennDOT… ## [Browse Recoveries](https://thesurveystation.com/browse-recoveries/) _2026-08-16 · (untitled)_ Browse Survey Mark Recoveries Browse by Year of Recovery + 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 Browse by Location + Arizona California Colorado Connecticut Delaware Florida Maine Maryland Nevada New Hampshire New Jersey New York Pennsylvania Utah Virginia Browse by Marker Type + Airway Beacon… ## [Contact Success](https://thesurveystation.com/contact-success) _2026-08-16 · (untitled)_ Your response was submitted successfully. Thanks so much! ## [Historical Airway Maps](https://thesurveystation.com/historical-airway-maps/) _2026-08-16 · (untitled)_ Maps of early aviation routes in the United States All maps were digitized and made available by the Library of Congress, and each link will take you to the appropriate map in their digital collection. I’ve created this index because their collection of airway maps does not contain individual metadata and is therefore difficult to search. Note: These maps are for historical research purposes only.… ## [Local Control Monument Databases](https://thesurveystation.com/local-control-monument-databases/) _2026-08-16 · (untitled)_ Local Control Monument Databases ## [Manual of Geodetic Triangulation (excerpts)](https://thesurveystation.com/manual-of-geodetic-triangulation-excerpts/) _2026-08-16 · (untitled)_ Manual of Geodetic Triangulation (excerpts) Title Page Standard Marks of the U.S. Coast & Geodetic Survey Objects Used as Landmarks Standard Numbered Notes for Description of Marks Specifications For Marks Chapter 6.-APPENDIX Title Page Manual of Geodetic Triangulation Standard Marks of the U.S. Coast & Geodetic Survey Standard marks of the U.S. Coast & Geodetic Survey Objects Used as Landmarks… ## [Marker Types](https://thesurveystation.com/marker-type/) _2026-08-16 · (untitled)_ Marker Types Airway Beacon Azimuth Mark Disk Bench Mark Disk Boundary Monument Cadastral Survey Disk Chiseled Cross Chiseled Square Chiseled T Control Point Copper Bolt CORS Station Downtown Restoration Program Disk Drill Hole Drill Hole with Lead Earthquake Research Disk Electronic Traverse Station Disk Elevation Mark Forest Health Inventory and Monitoring Disk Gaging Station Disk Geodetic… ## [NGS Recoveries](https://thesurveystation.com/ngs-recoveries/) _2026-08-16 · (untitled)_ The following 457 survey marks have been reported to NGS; updates have been added to the NGS database . WISCASSET BROWN SPIRE • September 4, 2025 WISCASSET CONG WHITE SPIRE • September 4, 2025 X 248 • October 7, 2024 B 46 • October 7, 2024 IRVING AZ MK • October 7, 2024 RV 128 • October 7, 2024 HUBER RM 2 • October 7, 2024 HUBER • October 7, 2024 B 249 • October 7, 2024 RV 129 RDGRR • October 7,… ## [NGS Historical Geodetic Control Diagrams](https://thesurveystation.com/ngs/) _2026-08-16 · (untitled)_ NGS Historical Geodetic Control Diagrams Geodetic Control Diagrams Alabama Andalusia, Alabama (NH 16-2).pdf Birmingham, Alabama (NI 16-8).pdf Dothan, Alabama\_Georgia\_Florida (NH 16-3).pdf Gadsen, Alabama\_TN (NI 16-5).pdf Mobile, Alabama- Mississippi\_Louisiana (NH 16-4).pdf Montgomery, Alabama (NI 16-11).pdf Phenix City, Alabama\_Georgia (NI 16-12).pdf Alaska Anchorage, Alaska U.S. , Yukon, Can.pdf… ## [Brisk AI News Briefings (Sponsored)](https://crawlproof.com/a/ZyvtpWWE8d79) _2026-08-16 · **Sponsored**_ Read AI summaries and listen to audio briefings for top stories. ## [PID Prefix Map](https://thesurveystation.com/pid-prefix-map/) _2026-08-16 · (untitled)_ PID Prefix Map This map shows the general scheme used when assigning the first two (alphabetic) characters of NGS survey mark PIDs. Note that occasionally, for a number of reasons, a mark may have a PID that falls outside of this general pattern. ## [Posts](https://thesurveystation.com/posts/) _2026-08-16 · (untitled)_ All Posts 2025 July 14 More Wyoming USGS Datasheets Posted! USGS datasheets July 3 Chocolate Benchmarks are Back! publicity May 28 Nebraska USGS Datasheets Available USGS datasheets March 20 Missouri USGS Datasheets Posted USGS datasheets March 2 Washington, DC Historical Benchmark Tour featuring Dave Doyle datasheets NGS tour February 25 Florida USGS Datasheets Posted USGS datasheets January 20… ## [Map of Recoveries](https://thesurveystation.com/map-of-recoveries/) _2026-08-16 · (untitled)_ Map of Recoveries ## [Resurvey of the Heart of the Grand Canyon](https://thesurveystation.com/resurvey-of-the-heart-of-the-grand-canyon/) _2026-08-16 · (untitled)_ Resurvey of the Heart of the Grand Canyon Narrative Technical Notes on the Survey Program Photogrammetric Notes Work Schedule Growth of the Grand Canyon Map Lockwood Mapping Sheet Completions National Geographic Grants to Grand Canyon Projects Grand Canyon Survey 1971 – 75 Station Types Grand Canyon Survey Data Laser Observation Data View Original Report 1971-1978 National Geographic Society –… ## [Survey Mark Data](https://thesurveystation.com/survey-data/) _2026-08-16 · (untitled)_ Sources of survey data This list contains both professional data and information for recreational hunters, so please note the source of each and evaluate accordingly. Also note that some sources, USGS datasheets in particular, contain many superseded marks that are no longer reliable for survey purposes but are very useful for recreational survey mark hunting. Professional resources NGS Database:… ## [Survey Mark Hunting](https://thesurveystation.com/survey-mark-hunting/) _2026-08-16 · (untitled)_ NGS Triangulation Station BEAUTIFUL Survey marks or monuments are objects used to mark a precise location and/or elevation on the earth. Survey mark hunting, sometimes referred to as “benchmark hunting” regardless of the type of marker being sought, is simply the activity of searching for these survey marks. When we find, or “recover,” a mark, we do not take it or disturb it in any way. We… ## [Tags](https://thesurveystation.com/tags/) _2026-08-16 · (untitled)_ Posts by Tag airway beacons October 31, 2022 Articles about Airway Beacons and Arrows airway beacons publicity October 3, 2020 Portland—Spokane Beacon #12 in Arlington, Oregon airway beacons June 27, 2020 Beacon Site Southwest of Las Vegas, Nevada airway beacons February 17, 2019 Salt Lake—Omaha Beacon Sites #38 and #42 airway beacons October 11, 2018 Arrow at Great Salt Lake, UT airway beacons… ## [Index](https://thesurveystation.com/usgs-datasheets/) _2026-08-16 · (untitled)_ ## [USGS Recoveries](https://thesurveystation.com/usgs-recoveries/) _2026-08-16 · (untitled)_ The following 27 survey marks have been reported to USGS; updates have been added to USGS datasheets. 37 B • August 2, 2005 DLW 1889 • July 18, 2005 15 C • July 18, 2005 25 HLZ • July 18, 2005 212 LRP • July 2, 2005 K 24 • June 11, 2005 ET 5 CRH • May 30, 2005 TT 2 H • May 29, 2005 39 JPN • May 22, 2005 TT 1 H • April 13, 2005 29 JPN • April 5, 2005 PTS 1 Y • February 7, 2005 1102.46 • December… ## [Years](https://thesurveystation.com/years/) _2026-08-16 · (untitled)_ Browse By Year 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 ## [ThreatCrush on GitHub (Sponsored)](https://crawlproof.com/a/s64J0jEwJmYA) _2026-08-16 · **Sponsored**_ View the ThreatCrush listing on the GitHub Marketplace. ## [32 JPN](https://thesurveystation.com/surveymarks/32-jpn/) _2026-08-16 · (untitled)_ ## [News you may have missed this week at Points Well Made - 16th August](https://www.pointswellmade.co.uk/post/news-you-may-have-missed-at-points-well-made) _2026-08-16 · Sam · Points Well Made_ It seems like the industry is taking their summer holidays all at once, but that's no bad thing, because it's given us a chance to get some guides out for you all. Did you know you can book Avios flights earlier than 355 days? That's BA's window, but it's not an Avios rule. Qatar, Finnair, and Iberia all open their own seats before BA's booking window even starts. Revolut has announced it's… ## [Do I have to take the Barclays cabin upgrade voucher as soon as I've earned it?](https://www.pointswellmade.co.uk/post/do-i-have-to-take-the-barclays-cabin-upgrade-voucher-as-soon-as-i-ve-earned-it) _2026-08-15 · Sam · Points Well Made_ That may sound like a funny question, surely I have to take it as soon as I've earned it? Not quite. There are two ways to earn a Cabin Upgrade Voucher, and the answer is different for each. If you've not come across it, the Barclays cabin upgrade voucher lets you book a seat in one cabin while paying the Avios price of the cabin below it. So a Club World seat will cost you the Avios rate for a… ## [Get 250 Avios for a £15 shop, if your card isn't already linked for in-store purchases](https://www.pointswellmade.co.uk/post/get-250-avios-for-a-15-pound-shop-in-store-purchases) _2026-08-14 · Helena · Points Well Made_ If you're a British Airways Club member (you're here, so let's assume that), here's a quick win worth adding to your Avios-earning routine this month. Register a new debit or credit card on the Avios website for in-store purchase, spend £15 or more in one transaction at a participating in-store partner, and you'll bank 250 bonus Avios on top of whatever you'd normally earn. Registering your card… ## [Revolut to open its own airport lounges from 2027, sort of...](https://www.pointswellmade.co.uk/post/revolut-to-open-its-own-airport-lounges-from-2027) _2026-08-13 · Helena · Points Well Made_ Watch out, American Express, there's a new kid on the block. Revolut has just thrown its hat into the airport-lounge-ring as it were, and it's doing it in typically bold fashion. The bank is calling the project "Revolut Lounge": a network of its own branded, premium airport lounges, kicking off at Copenhagen Airport in 2027. The plan, by the sounds of it, is for the Copenhagen lounge to become the… ## [Can you book Avios flights earlier than 355 days? With Qatar, Finnair and Iberia, yes](https://www.pointswellmade.co.uk/post/can-you-book-avios-flights-earlier-than-355-days-with-qatar-finnair-and-iberia-yes) _2026-08-12 · Sam · Points Well Made_ 355 days in advance is BA's booking window, but this isn't an Avios rule. Seven airlines now use Avios (being BA, Qatar, Iberia, Aer Lingus, Finnair, Loganair, and Vueling), but each opens bookings on its own schedule, with a few opening earlier than BA's window. This isn't a trick for getting BA seats early. BA opens at 355 days, and that's that. It's that Qatar, Finnair and Iberia start selling… ## [TT 7 K RM](https://thesurveystation.com/reference-marks/tt-7-k-rm/) _2026-08-08 · (untitled)_ ## [TT 7 K](https://thesurveystation.com/surveymarks/tt-7-k/) _2026-08-08 · (untitled)_ ## [pCO₂ Gap](https://rk.md/2026/pco%e2%82%82-gap/) _2026-06-26 · Rishi · RK.MD_ The venous-to-arterial carbon dioxide difference (PCO₂ gap), defined as PcvCO₂ (taken from a central line blood gas) – PaCO₂ (taken from an arterial blood gas), answers a question that neither lactate nor ScvO₂ can typically answer directly. Whereas ScvO₂ focuses on the balance between oxygen delivery and consumption, the pCO₂ gap asks whether blood flow \[…\] ## [pCO₂ Gap](https://rk.md/2026/pco%e2%82%82-gap/) _2026-06-26 · Rishi · RK.MD_ The venous-to-arterial carbon dioxide difference (PCO₂ gap), defined as PcvCO₂ (taken from a central line blood gas) – PaCO₂ (taken from an arterial blood gas), answers a question that neither lactate nor ScvO₂ can typically answer directly. Whereas ScvO₂ focuses on the balance between oxygen delivery and consumption, the pCO₂ gap asks whether blood flow \[…\] ## [The Plenum Chamber](https://drgustheentguy.substack.com/p/the-plenum-chamber) _2026-06-25 · The ENT Edge_ Your Sinuses — The Pressure System ## [The Front Splitter](https://drgustheentguy.substack.com/p/the-front-splitter) _2026-06-25 · Dr. Gus Arrieta, MD · The ENT Edge_ Your Nasal Septum — The Most Overlooked Component in Your Airway ## [The Flow Conditioners](https://drgustheentguy.substack.com/p/the-flow-conditioners) _2026-06-25 · Dr. Gus Arrieta, MD · The ENT Edge_ What your turbinates actually do — and why they're the most misunderstood part of your airway ## [The Front Wing](https://drgustheentguy.substack.com/p/the-front-wing) _2026-06-25 · Dr. Gus Arrieta, MD · The ENT Edge_ How Your Nasal Valve Controls Every Breath You Take — and What Happens When It Fails Under Load ## [Welcome to the Pit Lane](https://drgustheentguy.substack.com/p/welcome-to-the-pit-lane) _2026-06-25 · Dr. Gus Arrieta, MD · The ENT Edge_ How We are Going to Change the Way You Think About Breathing ## [PennDOT (Unstamped, #7)](https://thesurveystation.com/surveymarks/penndot-unstamped-7/) _2026-06-13 · (untitled)_ ## [Z 229 (LY1377)](https://thesurveystation.com/surveymarks/ly1377-2/) _2026-06-09 · (untitled)_ ## [02-35-3021-1](https://thesurveystation.com/surveymarks/02-35-3021-1/) _2026-06-09 · (untitled)_ ## [Vitamin K (Phytonadione)](https://rk.md/2026/vitamin-k-phytonadione/) _2026-06-07 · Rishi · RK.MD_ Vitamin K (phytonadione) is an essential, fat-soluble cofactor for γ-carboxylation of clotting factors II, VII, IX, and X, as well as proteins C and S. This post-translational modification allows these proteins to bind calcium and participate in coagulation. In vitamin K deficiency or during warfarin therapy, the liver continues to synthesize these factors, but they \[…\] ## [Vitamin K (Phytonadione)](https://rk.md/2026/vitamin-k-phytonadione/) _2026-06-07 · Rishi · RK.MD_ Vitamin K (phytonadione) is an essential, fat-soluble cofactor for γ-carboxylation of clotting factors II, VII, IX, and X, as well as proteins C and S. This post-translational modification allows these proteins to bind calcium and participate in coagulation. In vitamin K deficiency or during warfarin therapy, the liver continues to synthesize these factors, but they \[…\]