As summer comes to a close, it is worth remembering that in some places, colder weather will hit while the rest of the country stays warm. In the northern climes, the onset of fall means colder temperatures at night, and that means there is a distinct possibility of frost. This may mean deicing, even though you can still wear shorts in the afternoon.
Even though it is still hurricane season, this is a great time of the year to begin reviewing cold weather operations. Believe it or not, most airlines start planning for winter ops around the first of June. There is a lot of background work that needs to be done. Deicing trucks need to be tested and maintained. Fluid needs to be ordered and strategically placed (in some places, this is handled by the airport, but not always). Employees need to be trained, equipment needs to ordered—the list goes on, and everything starts with an honest review of what did and did not work well the last couple of seasons.
On the pilot front, most airlines issue flight manual updates in the fall, and these almost always include updates to deicing procedures. In 2017, many airlines began using a new liquid water equivalent (LWE) concept that takes into account multiple variables at one time. In the past, deicing ops were predicated mostly on precipitation intensity or type. LWE takes into account temperature, dew point, and humidity as well to more accurately predict the hold-over times that can be used while deicing. The result is longer holdover times without compromising safety, which minimizes the risk of re-deicing—a time-consuming, expensive process.
Updates will also consist of new procedures—will the flaps be up or down for deicing this year?—that might be specific to the fleet, the airline, or the airport. Pay attention, because we can easily forget the details, and sometimes the changes are significant and dramatic.
A review will also make it easier to find quickly the sections of the manual needed when something is out of the ordinary, such as an inoperative APU. A lot of the updates will be buried in the company-specific pages of the Jeppesen charts, and while most airlines do a good job of communicating these, inevitably something will get through the cracks.
I always make a point to review cold weather ops just after Labor Day. This year will be no different. It’s a great habit, and having done it now for almost 20 years, I’d feel naked if I didn’t. Ice can be deadly and dangerous, and it deserves respect. Company procedures need to be followed. As always, two heads are better than one, and a good captain appreciates a first officer who is on his or her game.—Chip Wright