In the wake of several recent airliner losses, talk in the media once again turns to the futuristic concept of remotely piloted passenger jets.
A very bad idea, as I explain on Mashable.com. Just click here to read, or use the link below.
All the Wrong Answers to the GermanWings 9525 Crash Questions
As is always the case after an airline disaster, the media and shortly thereafter, regulators rush to propose a quick but ill-advised “fix.”
In this case, the proposed quick fix falls into one of two useless but unavoidable categories: technology and regulation.
In the first case, technology, the spectrum of bad ideas runs from remote control to cockpit access override. That reminds me of earlier, fun days flying a supersonic jet that began to accumulate pilot fatalities in low speed, low altitude ejections. The engineering fix was to install a drogue chute that deployed upon ejection to hasten the main parachute deployment. That worked fine until the first high speed, high altitude ejection when the drogue chute deployed at Mach 1 and the G forces cut the pilot in half.
Back to today, talk in this airline tragedy is of an even more bizarre solution: remote control “intervention:” taking over the aircraft flight controls from the ground. Beyond the fact that I as a thirty year airline pilot will not set foot in a cockpit that can be commandeered by remote control, consider the added layer of vulnerability: beyond two pilots who “could go rogue,” you’ve now introduced an entire spectrum of people, entities and hackers capable of taking over the jet. Better? Really?
Yes, some type of cockpit access intervention “might” have worked to restore this one pilot to his rightful place, while opening every cockpit henceforth to an outside “intervener” which defeats the necessary cockpit exclusion no one disputes is necessary: if one can, eventually all can. Better?
Then there’s the regulatory crowd, for whom the semi-annual FAA pilot physical, recurring spot checks, blood and urine alcohol and drug testing is not sufficient to validate a pilot’s fitness to fly. What’s next, a psych exam before brake release? A background check beyond the extensive background checks we all have already? A credit report before each instrument report?
Here’s the real problem: there are no quick solutions. Yet that’s what the public “demands”–for now, but only for now. The fact is, in Texas alone there have been 257 traffic deaths so far this year, yet no one’s calling for a twenty mile an hour speed limit or any other radical but certain solution. Yet the “1 in 11,000,000 chance” (Harvard 2006) of dying in a plane crash brings a public outcry for an immediate technological or regulatory intervention.
I watched Air Force One arrive once, the president bounding down the stairs and greeting the crowd as law enforcement snipers on rooftops looked on. No “remote control triggers,” no on-scene sharpshooter credit checks. Rather, the thinnest final line ever drawn: trust.
In the end, that’s what it comes down to anyway: trust in your flight crew. There’s no simple solution to the rare and tragic occurrence that just transpired over the French Alps. But there is real danger in half-baked solutions that just add more layers of vulnerability to what is already 11 million to 1 odds in an airline passenger’s favor.
Despite the media frenzy driving an out of scale public reaction, no “solution” is better than a hasty, ill-conceived technological or regulatory bandaid that increases the very danger that started the panic in the first place.
If you don’t trust me in the cockpit, fine: trust yourself on the road. Your odds there are astronomically worse, if that matters to you, but at least the flying public will remain safe.
Network news media love a screaming headline, even if they have to fudge the facts to suit the rhetoric. But here is the reality behind the wailing and gnashing of teeth regarding recent ice-related delays at major airports: the airlines did a damn good job given the challenges heaped on them in this storm.
As a captain, I flew a 737 trip in the middle of the week in the slush and snow out of DFW. Here is your chance to bypass the media frenzy (NBC News carefully crafted “9 hour delay for passengers”–quietly admitting later that it wasn’t on-board) and watch the flight evolve despite the weather interference.
At 06:10, a phone call from crew schedule woke me up. I had volunteered to fly a trip that day and they offered one, a turn to John Wayne Orange County (SNA) scheduled to depart at 10:10. I agreed to fly the trip.
Normally, it takes me 35 minutes to drive to DFW. I left my house at 6:45 to allow extra time for the slush and snow snarling the highways.
I arrived at DFW an hour later, an hour and twenty minutes early. The jet was parked at the gate, had been all night in the freezing precip, so I went aboard and started powering up systems. A quick check of the wings and fuselage confirmed what I assumed driving in: we’ll need a good de-icing on the wings, control surfaces and fuselage.
Let’s get more specific about aircraft icing. First, we need to remove the accumulated ice. Second, we need to prevent more ice from re-forming on aircraft surfaces. De-icing can be accomplished by a number of different fluids under pressure. “Anti-icing” is provided by a different, specifically designed fluid that chemically inhibits the adherence of ice on aircraft surfaces.
In our case, the ceiling was low and visibility limited by ice fog, confirming the critical temperature-dew point spread that leads to condensation which of course would freeze on any cold surface. That means both de-ice and anti-ice will be required.
Anti-ice fluid effectiveness varies with temperature, and rate and type of precipitation. The duration of anti-ice protection declines as various forms of moisture increase. So, gauging the time–called “holdover time”–is a call that must be made by the flight crew based on observation of conditions actually occurring.
You can tell when anti-ice fluid has been applied to a jet because it will be colored either brick red-ish or lime green. The intensity of the color cues the cockpit crew as to the fluids declining effectiveness–it fades as the fluid loses the ability to inhibit icing. We actually check visually that from inside the aircraft prior to takeoff.
A side note about the fluid color. Most airlines now use the green fluid because the red was difficult to distinguish from hydraulic fluid as it dripped from crevices and bays on the aircraft, sometimes several flights downline from the original de-icing treatment. I learned long ago how to differentiate the two: propylene glycol, the main ingredient in anti-icing fluid, smells and tastes sweet. Skydrol hydraulic fluid is bitter. Yes, I’ve tasted both in the thirty years (and counting) I’ve been flying jets and laugh if you want, but it saves all aboard a needless and probably lengthy maintenance delay.
Another unseen complication that adds to the icing mix is jet fuel. The worst case is with fuel remaining in wing tanks after a flight at high altitude. The fuel in the tanks become super cold due to the temperature at altitude (often -50C or less) and as a result, the wing surfaces both upper and lower are super-chilled, causing any moisture in the air to freeze on contact. Explain that to the guy sitting next to you griping as we de-ice on a sunny, clear day: humidity plus ice-cold metal surfaces can add up to wing icing that must be removed: we can tolerate no more than 1/8″ of mere frost on the underside of the wing only. Any other airfoil contamination must be removed before flight.
Clear ice on wings is not easy to see from the cabin, particularly the area near the wing root, which is critical on aircraft with tail mounted engines like the MD-80 and -717, because upon wing flex as rotation and liftoff occur, any wing root ice that breaks loose into the slipstream could easily fly back along the fuselage to be ingested by either or both engines, with potentially disastrous results.
So why don’t aircraft have heated wing surfaces? Actually, most MD-80 upper wing surfaces do have an electrically heated thermal blanket on top of the inboard-most portion of the wing surface. But, not the curved wing root joint which is not visible from the cabin. So, you’ll notice a lot of MD-80 aircraft having to de-ice in even the slightest icing conditions.
In our case, I knew the fuel pumped aboard for our flight would have the opposite effect. At DFW, the fuel is stored underground and pumped aboard from a hydrant, not a truck. The effect would be to warm, not freeze the wing surfaces. That would help with de-icing, but we’d still require a thorough dose of Type-2 de-icing fluid to clean ice off the jet.
By 9:10, the official crew check-in time, there was no sign of a first officer. I started the process of printing a flight release and agreeing on a fuel burn, as well as the complex process of determining takeoff speeds, made more complicated due to the presence of slush and snow on the runway. Any type of contamination, from pooled water to slush to ice can impede both acceleration and deceleration. Both maximums (takeoff and stopping) must be accurately calculated and while there is a published “runway condition,” the actual calculations are very much a realtime, eyeballs-verified assessment: I’ve broken through an undercast during an ice storm as we approached DFW only to find that just the first two-thirds of the runway had been cleared–a fact not noted on the official field report. That lopped off about four thousand feet of useable braking surface.
At 9:30, forty minutes prior to pushback, still no sign of a first officer. The roads are awful, as is the traffic, so I’m not surprised and I’m glad I left home as early as I did. I called Crew Tracking, catching them by surprise as well: in this winter storm, there were plenty of stuck, stranded or missing crewmembers. They hadn’t noticed.
I resigned myself to going out into the sleet to do the exterior inspection myself, planning to have all preflight duties complete in case the first officer should show up at the last minute. Here’s an up close look at the leading edge icing:
and the ice on the wing trailing edge:
Engine covers were installed, a very smart preventative measure to prevent icing, but which would require maintenance removal and documentation. I radioed maintenance to get in the cue for this required maintenance and fortunately, American Airlines had well-staffed maintenance for this shift. But again, they too had technicians who, like my F/O, were stuck in the ice storm snarled traffic, slowing things down.
With the exterior preflight complete, I requested the upload of navigation and performance data as well as our clearances. And I took a minute to call the Crew Scheduling Manager on Duty to suggest that they grab the deadheading 737 first officer sitting in row 20 and reassign him to fly the trip. He said if the duty legality limits worked, that’s what he’d do.
By 10:00, the conscripted first officer was in the right seat, having agreed to the reassignment: he’d fly the leg to the west coast, his home base, and rather than going home, he’d also fly the leg back to DFW and only then deadhead home, if possible. Just one more crewmember going the extra mile to make the flight operation work.
We pushed back nearly on time (10:21 vs. 10:10) , but the ramp was congested with ice and slush, slowing everyone down even further. The precip had stopped, the ceiling had lifted to a thousand feet and the temperature-dew point spread had widened, all of which meant less chance of ice formation. Our holdover time would expand, allowing us to de-ice on the ramp rather than at the end of the runway. Essentially, that made for a shorter wait for all aircraft: if there is freezing precip, or any precip in freezing temps, all de-icing would have to be done at the end of the runway, meaning long takeoff delays.
Taxiing a seventy-five ton tricycle on ice and slush is tricky, requiring slower speeds and a critical energy management: too slow and you’ll have to add excessive power to restart movement, slinging ice and slush at other aircraft. But you also need almost zero forward inertia to maintain nose gear traction in any turn, aided by asymmetric braking on the main gear into the turn. It’s a dicey operation that takes extra time.
We kept the flaps retracted on taxi-out so as to not accumulate any slush or freezing water on the underside of the flaps, a potential problem during flap retraction. Our miles-long taxi from the east side terminal to the west side runway gave us plenty of time to assess the surface conditions and fine-tune our power and speed plans.
We finally lifted off nearly fifty minutes after taxi-out. Through route shortcuts and favorable winds, we made up some of the lost time, arriving twenty-eight minutes behind schedule.
I believe my flight was more typical of all flights during an unrelenting ice storm, but mine isn’t the one craftily worded into a horror story by the media. Regardless, the fact is that icing makes flight operations complex, difficult and challenging. Yet more flight operated in the same way mine did–slow, careful, successful–than the media version of a few unfortunate cases. I take it as a compliment that the reality of these winter flights was a success story leaving the media very few flights to turn into their typically overblown horror stories.
By the time I got home nearly fourteen hours after voluntarily accepting the challenging flight assignment, the network news was already sensationalizing the “impossible” travel situation created by SnoMIGOD 2015 which dumped an unprecedented amount of snow and ice on DFW and Dallas Love Field. At least I knew the facts were not as they’d have us believe–and now you do too.
Travel smarter, with this insider air travel field manual and survival guide. Check it out on Amazon.com, or just click this link to order from Amazon.
The crash video is horrendous, as is the most of the speculation in the media. Here’s my discussion of the video with Fox News:
To to watch, simply click here.
The direct link:
Sidelong cross-cockpit glance: yep, it’s a flat top, ex-USMC style, and the bushy but gone gray Magnum PI mustache suggests a time warp. Better times? Easier times? He laughs a lot for a guy on the razor’s edge of disaster. I say nothing.
Ahead cumulus knots itself into towering stacks, each with a cirrus blow-off pointing like a banner to where the fleet’s headed. Same place we are, or so the anvils point. I’m thinking an upwind end run around the billowing, full-sail armada. He’s talking about our Chicago layover tonight.
His wife, a flight attendant, met us at our connecting gate as she passed through the airport. Something in her eyes matched the foreboding that weighed heavy as the tide on my mind. Pleading? Hurt? Wary? I couldn’t tell–yet I know what I know: My Darling Bride, also a flight attendant, flew with her yesterday. And I knew his wife–flew with her many times–before they were married. Then she was bright in the sense of Christmas lights, tiny scattered points of happiness gleaming everywhere. Not any more.
“Takes two to tango,” his words tumble in a snippet from what is more of a forced chatter, or so it seems. I guess if you’re talking you never have to listen. But in the tango of time and fuel, in the dance altitude and storm clearance, may I cut in?
“I’d say left,” my mouth says. It’s his flight leg, but my jet. He’s flying the plane, but I signed for the damages. Upwind is longer, but smoother, safer. The shorter way is too uncertain, could put someone through the ceiling.
“We can top it,” he suggests, sweeping a hand out flat, as if showing a planar space between our altitude and the boiling cumulus rising ahead. Ah, there’s a thought. Climb another two thousand feet to max habitable altitude for the weight–which puts you into the coffin corner where the difference between high-speed buffet and low speed stall is a handful of capricious knots. If there’s any turbulence, those knots stop the tango and freestyle. Good luck.
His wife had mechanically recited to mine the all-too-familiar litany. “We just bought our ‘captain’s house’ … he wants me to quit flying … he can hold captain in Chicago … get a crash pad there …” In the jumpseat confessional, all is forgiven, but there will be penance nonetheless. Ahead, lightning licked the bruised-blue cloud bases, promising a fresh evening hell for Kansas and eventually, Illinois.
“Let’s take it over the top, direct,” he says with finality. “Stay on time.” Unsaid, but mentioned earlier: “she gets in an hour ahead of us.” Gentleman that he is, he doesn’t want her waiting. She flies for a different airline, but even after working her way over to our terminal, she’ll still have time to kill.
The thing about fiery cumulus and boiling sky is this: you really don’t know how it’s going to turn out. Never mind about the paper algorithm of options and assets, timing, clearance and margins, in real life, you just never know.
I key the hand mike. “Center, we need twenty left for weather.”
He slumped a little. Peeved? The perfect plan set back a few minutes? Can’t tell. Doesn’t matter. We swung wide upwind.
I glance at the cloud tops, anvils aglow with the molten sunset. Some storms seem to fade, to lose their fire when the heat of the sun goes away. But this towering mess seemed the type that would thunder ahead regardless.
“Some things,” I say, “Some things you just can’t get over.”
Deaf ears. He was already hundreds of miles ahead, prattling on about Geno’s and where they’d watch the mind-numbing circularity of NASCAR (“She gets it–and me!”) inside The Loop.
Shouldn’t be in too much of a hurry, too far down the road, I thought to myself. Some things you just never get over, and really, you probably shouldn’t try.
Some you’ve read here, many have yet to appear and the last essay, unpublished and several years in the writing, I consider to be my best writing effort yet.
Own a piece of JetHead, from Amazon Books and also on Kindle.
There’s a blessed silence in the cockpit right before pushback, immediately after the number one flight attendant reports “cabin ready,” and slams the cockpit door securely shut. Before that, the usual boarding chaos filters through the open cockpit door, the clatter of catering the forward galley, ramp workers stepping in to deliver some cargo paperwork, maybe some aircraft maintenance techs wrapping up required service or repairs.
But the noise and activity isn’t all that ends with the door slam. We call it “sterile cockpit,” an industry-wide concept rooted in the best Crew Resource Management (CRM) practices that dictates all non-flight essential conversation ceases in order to focus solely on the prescribed, often complex procedures required to fly the jet.
In other words, leave all distractions behind and keep your head in the game. And I take that concept a step further–I clear my mind of everything except procedures (there are a multitude) and situational awareness: he’s moving, we’ll wait … wingtip clearance here … wind shift, at least for now … we’re heavier than planned.
Not just sterile cockpit verbally, but mentally as well. When you’re moving eighty tons of metal and a hundred sixty warm bodies, there’s no room for distraction. My airline (like most, I assume) has done a good job of minimizing outside considerations through the basic premises from which the pilot-in-command operates.
For me that means I’ve “pre-worried” about the extraneous considerations–both yours and mine–and for the good of all, I’ve put them aside, compartmentalized them, and now look beyond them. When I say yours, I mean your down line connection, your time schedule, your reason for flying whether business or pleasure. Mine often overlap yours–my days off, my family plans, my important events, even my own physical stress of time zone shifts, late hours that could creep later, and my pay considerations.
Doesn’t mean these concerns are invalid, unimportant or dismissed–they’re just not on my mind as I balance crucial flight variables as they unfold. They’re fully addressed in the basic premises of our airline operation, stipulated in a hierarchy a passenger might not like, but which makes the most sense for a safe flight operation:
First, safety, second, passenger comfort and third, schedule. Yes, your connection, even your arrival time, is in third place. Just remember, I have similar personal concerns and I’m putting them completely aside as well. Here’s why.
A recent Flight Safety Institute report highlighted one of the factors that contributes to the comparatively high accident rate per flight hour experienced by air ambulance operators. One factor mentioned was the very real life or death pressure perceived by the pilots: if we don’t land on this spot, at this time, regardless of circumstances, a life may be lost.
That’s a very vivid and understandable urgency that would be difficult to put out of a pilot’s awareness. Nonetheless, the air ambulance operators with the lowest accident rates are the ones who’ve put CRM at the forefront, refocusing on flight safety limitations as a governing principle and setting aside all else.
Now, your kid’s birthday, your business or other event, yes, they’re important–so are mine. But they aren’t life or death, are they? But as flight distractions, whether it’s an air ambulance or an air carrier, they could easily become exactly that.
From the moment we push back, the clock in my captain’s mind runs on weight, not minutes: how many pounds of fuel do I have, which translates into the ability to remain aloft. So, when you (or maybe a commuting crewmember, to be fair, asks “can we fly faster to make up time,” the real question in my mind is “can we afford to gamble by shortening our available fuel duration, and to what purpose and at what cost?” Less holding time available at our destination, maybe requiring a more stressful approach? No way.
The answer to “purpose” would be to shave off 5 to 10 minutes–hardly worth it–at the price of degrading our ability to arrival delays because of an increased fuel burn for speed. The question “can we top this weather rather than circumnavigating the area to save time” brings the opposite answer: maybe, but the more prudent option is to avoid–so we’ll spend the extra time (sorry about your connection–and mine) to do that.
And if you think we as pilots don’t have crucial connections, think again: besides losing pay in a misconnect, there’s more. For many crewmembers, even a ten minute late arrival can mean the difference between getting home or spending a night in a hotel at their own expense and losing a day with family. Sure, I eliminate that worry by not commuting, but crew base positions are determined by seniority–junior pilots and flight attendants can report to work and receive the official notice, “as of next month, you are based a thousand miles from home.”
That all needs to wait outside the cockpit door. Inside, we must focus on the vital flight considerations that trump all distractions.
Again, arrival time–and connections–hang in the balance, but that’s a distant third place behind safety. So yes, I’m not thinking about your connection–and you should be glad. Because that’s exactly what you’ve paid me for, and you deserve no less than the safest, most professional flight, no matter how long that takes.
Some you’ve read here, many have yet to appear and the last essay, unpublished and several years in the writing, I consider to be my best writing effort yet.
Own a piece of JetHead, from Amazon Books and also on Kindle.