Not quite sure what you mean there. If this is regarding the flap deployment, commercial planes used in regular service have much more going on for them. Deacon mentioned an auxiliary hydraulic system to deploy flaps on the Cessna 210. I'm not sure of what an airliner has, but I'm sure they can deploy flaps even without the engines running, and even without the auxiliary generator (a small turbine engine) running. They have to be able to, particularly on planes that are fly-by-wire (most airliners built since the mid-70s), because flying without hydraulics is really hard, and landing without hydraulics plain sucks. To give you an idea, in all of the cases where an airline lost hydraulics in flight, it was not until a DHL flight to Baghdad in 2003 that was hit by a missile managed a safe roll-out that any plane in such a situation landed safely.adciv wrote:Note to self: Start researching the flight clearance requirements for non-military aircraft before boarding.
Totally off-topic, and absolutely not a joke, despite the smile and perhaps laugh that will ensue: I have to give serious props to Captain Kohei Asoh, who was flying Japan Airlines Flight 2 in a DC-8 on a route from Tokyo to San Francisco on 22 Nov 1968. At the time, Asoh had some 10,000 hours of flight time, having flown at least as far back as WW2, when he was a flight instructor for the Japanese armed forces. The plane itself was quite new -- barely six months old at the time -- and Asoh was not entirely familiar with the flight director system that was new and specific to the DC-8. The weather was not especially bad, but the clouds were low -- overcast at 300 feet and 3/4 mile visibility. (Some San Francisco residents would call this "normal conditions.") On approach to SFO, the plane broke through the clouds, and Asoh realized that instead of being a few hundred feet up and on glide slope, he was just about to touch the water. Despite applying power, the engines could not spool up in time, and the plane touched down in San Francisco Bay, more than two miles short of the runway.
Fortunately, none of the 107 souls aboard were seriously hurt in the incident. The plane would be recovered from the bay, refurbished, and returned to service, serving with JAL for many years before being scrapped.
At a press conference organized by the NTSB and JAL, a statement was issued, and reporters were allowed to ask questions. As I understand it, the first -- and perhaps last -- question directed to Captain Asoh was, essentially, what happened? The pilot, clearly chagrined by the experience, leaned forward to the microphone for his response:
"As you Americans say, Asoh fucked up."
This has been documented all over the place. I would love to have video footage of this. As a result of taking the blame so clearly and succinctly ("suck what?"), Captain Kohei Asoh is absolutely one of my heroes.