Showing posts with label FSS. Show all posts
Showing posts with label FSS. Show all posts

Friday, July 28, 2017

Cessnas and Lying About the ATIS

Yesterday I was inbound to an airport overseen by a Flight Services Specialist. I don't know if other countries have this. There are no controllers, but there is highly trained person in the tower, dispensing altimeter settings, and traffic information, and generally doing everything a tower controller does except issue clearances and instructions. They make recommendations that you would be wise to follow, but if the FSS says, for example, that winds are 150 at fifteen gusting twenty-five, and the preferred runway is 15, the pilot is totally free to declare that she is landing on 33.

The FSS told me, when I was fifteen miles out or so, that there were two Cessnas in the circuit. One of them called final as I neared the field. I washed him do his touch and go, and kept him in sight, so that as I crossed over midfield I was able to say, "I have the red 172 in sight."

"They're both red," the specialist said somewhat acridly. "The other one is at the hold short line." So firstly he knew which one I had in sight, even if the identifying characteristic I chose wasn't distinguishing, and secondly, how is an aircraft at the hold short line--on the ground--considered to be "in the circuit"? It's okay. I'm an incurable smartass, too. I join downwind, ahead of the airborne red Cessna, and land. I refuel and taxi out again. A different specialist is on the radio. She tells me that there are "two Cessna 172" in the circuit. I find it curious that she considers C172 to be an inherent plural. I imagine this being something she feels strongly about, and that she argues for her position at sufficient length that others shrug and humour her sometimes. I mentally run through different aircraft types and try to think of any that I would not make explicitly plural. I do not ask her if either or both the C172s are red, and I depart straight out without seeing either.

I'm on my way to an airport with an actual control tower. I tune the ATIS and note that it is information Hotel. I also note that it's four minutes after the hour, and the ATIS is over an hour old. I know that this particular airport labels their ATIS on the hour, but often doesn't change it until a few minutes past. I'm still twenty minutes out of the destination, so I'll have to pick up the new ATIS before I check in. A few minutes later I hear WestJet checking in on frequency, "with India." I retune the ATIS and listen. It's identical to Hotel, same winds, same altimeter, same multiple cloud layers, same tedious NOTAM about the new rule about STARs being changed back to the way it was, "inform ATC on initial contact that you have information Hotel." What? "This is airport information India ..."

It's not that uncommon to be on frequency right as the ATIS changes letter. But it takes defiance of the laws of spacetime for Westjet to pick up India while I'm still hearing Hotel. Unless the ATIS is available by ACARS. Can you get ATIS by datalink? I don't know. It's also possible that one pilot wrote down the ATIS and the other one read the H sideways and got I, or that they heard Hotel far back, saw it was coming up on the hour, and knew they'd have to pick up India, and then forgot they hadn't. Or that they just flubbed the letter. Or they lied. I think they lied. They didn't want to listen through that tedious NOTAM that every Canadian airport with a STAR has up right now. I don't blame them. ATC would have said on frequency if the new ATIS involved a runway change, a significant change in weather conditions, or the like.

Sunday, March 27, 2016

Hotspots in the Sky

I'm working in a little corner of the sky that includes the top edge of a cylinder of class D airspace that is monitored by a flight service specialist, a slice of class C terminal airspace, and the edge of an area of uncontrolled airspace with its own air-to-air frequency for the low-level local traffic. I checked in with the FSS and they handled me for a while and then decided that I should talk to the terminal controller, to coordinate my movements with inbound IFR traffic. I did so, and tried to monitor both frequencies for a while, but it was an overlapping cacophony of sound. Even turning down the volume for radio tuned to the second frequency, I wasn't sure I wouldn't miss calls on the primary, so I told them I was going to let them go.

When the work was finished there, my next job was in military airspace. Prior negotiation had secured us permission to work in the airspace, so all I had to do was call their controller for a clearance. But just as I was about to do so, we discovered a problem. Data that was supposed to be on board in our computers was not. The data is required to do the work. We have a satellite link on board, which can be used to communicate with company, but only via short text messages, not special format data files. This wasn't an unprecedented situation. I found a community with a cellphone tower and dropped to a suitable altitude to orbit the tower until we had good bars on a cellphone and could set it up as a hotspot to log the laptop into it. The laptop wasn't charging properly and the battery was low, but there should have been enough juice to grab the data. Then I hear cursing from the back of the plane. Windows has decided that this is the right time to download and install updates.

The town with the cellphone tower also has a little airport, with a little tiny terminal. I check runway length and procedures and put my wheels down. It's much easier to download data while on the ground. Also easier to visualize. I caught myself claiming we were "uploading" data, because it had to come up to get into the airplane.

Tuesday, January 20, 2015

Regional Rivalries

In the course of our operations we operate both VFR and IFR, often switching between the two regimes, sometimes more than once, in the course of a single flight. VFR stands for Visual Flight Rules, and the rules are simple. As long as my company knows where I am, I don't need to file any flight plan, follow any specific route or maintain a particular altitude or speed. Under VFR I am not allowed above 18,000' in most places, and I need to plan a landing with thirty minutes of fuel remaining, and I need at all times to be able to navigate and maintain control of the airplane by looking out the window at visual features, e.g. rocks, lakes, roads, cities and the horizon. If I can't see where I'm going, I must file IFR.

IFR stands for Instrument Flight Rules. It requires an advance flight plan showing a precise routing, a clearance before departure, and permission to make any changes in altitude or heading. In any area, I'm not allowed below the minimum IFR altitude, even if I can see that it's perfectly safe. If I fly IFR at all during a day, I am limited to eight hours of any flying during that day, which may limit reaching an objective. I must fly IFR if the weather conditions anywhere along the route do not allow me to fly visually, or if I wish to fly above about 17,000'.

So you can see that if my company wanted me to leave an area of poor weather, do some low level flying in an area of good weather, and then land somewhere else covered in low clouds, I would need to be IFR then VFR then IFR. But if the task was to fly low over a city for thirty minutes and then climb up to flight level 220 (about 22,000') for three hours and then then land at a tiny airport in the mountains with no instrument approaches, I would be VFR then IFR then VFR. Such a plan is called a composite flight plan. This shouldn't be that complicated, except that the people in the IFR and VFR systems hate one another. As best as I can tell, the controllers that handle the stereotypical high speed, prestigious IFR traffic are contemptuous of the people in the system that handles the slower, lower, quirkier VFR traffic, and the VFR folks in turn resent the IFR controllers. They aren't really set up as two different systems. The Flight Service Specialists who track VFR flights also pass clearances to IFR traffic, but they get it from the people who will be managing the IFR flight after departure. Those same controllers handle many VFR flights, but in many cases they release us as soon as we are clear of controlled airspace, lacking radar coverage or time to pay attention to flights they have no legal obligation to provide coverage for.

Let's say I file an IFR flight plan out of Frog Valley, proposed to last two hours and terminate under VFR in Weasel Swamp. I can file this flight plan with either the predominately VFR FSS or with directly with the IFR data people. If I do the former, the FSS will simply forward the IFR portion to IFR data, where the planners will map it out to ensure that it doesn't interfere with other traffic or violate any rules or procedures. If I file with data they will lob the VFR portion off to the FSS. So imagine I depart on that flight, but after an hour company calls and tells me to fly to Ptarmigan Inlet. I tell the controller that we aren't going to Weasel after all, please amend our destination to Ptarmigan, estimated time enroute, three hours from now. I request descent out of controlled airspace, turn en route for Ptarmigan Inlet and then an hour out call up Flight Services to update destination weather. At least half the time I will encounter a controller who is on the edge of frantic, considering me an hour overdue into Weasel. The IFR controllers forget to propagate the change in destination and ETA through the system, even when I explicitly confirm with them that they will. Simultaneously changing flight rules, destination and ETA is an extremely common occurrence for our operation. I tried for a while explicitly telling the IFR data controller NOT to propagate the VFR portoin of the plan, that company flight following would handle it, but they didn't always comply with my request, so I still had to check, and I discovered that the FSS was annoyed at being circumvented. I now always close the flight plan with both the IFR controller and Flight Services, but often terrain, altitude or remote location prevents me from reaching an FSS right away. I've learned, however, that when I call late, telling the annoyed flight service specialist that I did amend the plan, but the IFR controller forgot to pass on the change immediately soothes the wrath. In fact, just about any error occurring in the course of a composite flight plan can safely be blamed on the part of the system you are not currently speaking to. A similar lack of communication, but not the outright hatred, applies across provincial and territorial borders, even on a flight plan that is not composite. A controller from one flight information region (FIR) was unfamiliar with the abbreviation PTD (proposed time of departure) that designated the content of a blank on a standard form from an adjacent FIR, and to work the edges of our national, integrated air traffic control system, it pays to have an intimate knowledge of regional and departmental preferences.