There is an old adage that says that being a single-engine pilot minimizes your decision making in an emergency, and there is some truth in that. If your only engine fails, you’re landing.
In a multiengine airplane, you may or may not have options. In a turbine-powered airplane, assuming you have properly loaded the plane and give due deference to published performance data, you will indeed have options. This is especially true on takeoff.
In the FAR Part 121 world that is the airlines, there are certain performance criteria that an airliner must be able to meet, and one of them is the ability to comply with the four segment climb in the event that an engine fails during the takeoff. Most of the time, this isn’t a problem. A properly trained crew can lose the use of one engine, maintain control of the plane, and fly it off the ground safely and figure out where the best place to land will be.
Sometimes, though, terrain or obstacles (or both) preclude the straight-out departure. In this case, there needs to be an alternative procedure. The airlines and manufacturers work the engineers to produce viable options.
These are then tested in the simulator (and probably in a few cases in the real airplane). The procedures are then tweaked and validated and are published. However, they aren’t available in the public domain, because each procedure is ‘owned’ by the airline and/or the manufacturer. Jeppessen, which is the primary producer of aeronautical charts, publishes the procedures as “10-7” pages. And it’s possible that two companies flying the same airplane may have different procedures at the same airport.
Common airports for 10-7 pages, also known as special engine-out procedures, are Las Vegas, Phoenix, or Reno. Most of the time, the issue is terrain, but not always. In a few cases, like Washington National, there may be another issue. Departing Runway 1 at DCA, the issue is Prohibited Area 56 and the fact that a straight-out departure would put you square in the middle of the airspace that protects the White House and the U.S. Capitol.
But terrain is the most common driver of 10-7 development. When I was at the regionals, we had a 10-7 page for Reno that was incredibly complex. The only way to really fly it safely was to brief the first turn and the associated altitude, and then plan on having the nonflying pilot provide a progressive reading of the steps as the flying pilot attempted to fly. In a place like Reno or Vegas, the weather is almost always VFR, so you can plan to maintain visual separation from the rocks. But this isn’t always the case.
Here’s the rub: 10-7 pages are not something the tower is going to be familiar with, so if you have to fly a single-engine procedure, you’ll need to tell the tower that you’re going to be flying a company-specific procedure due to an engine failure. In a high-traffic area, this can get exciting. The best thing you can do is tell the tower to stand by, and do what you need to do to get to a safe altitude and a place where you can trouble-shoot and figure out your plan for getting back on the ground.
A couple of other notes about 10-7 pages: They are often used for a single-engine missed approach as well; and different fleets at airline X may well have different procedures. In fact, it’s possible that some fleets will need a 10-7 page, and others will not.
As a new airline pilot, you can expect an early introduction to 10-7 pages and how to brief them. You’ll also likely get a taste of at least one in the simulator. But, better to see it there for the first time than on the line!—Chip Wright
This is part 2 of a two-part series. See Part 1 here.-–Ed.