. tonight on "nightline," emergency landing. another scare in the sky. this time a jet blue pilot breaks down and is locked out of the cockpit while crew and passengers subdue him. we have the latest details. rolling in the deep. in a "nightline" exclusive, james cameron tells all about remaking titanic in 3d, why he's just gone to the bottom of the ocean again, and the errors he found in the iconic final scene of his own movie. plus, angry birds, they were pampered and praised, the stars

of the zoo until the pandas arrived and stole the spotlight. and now, oh, the mayhem. from the global resources of abc news, with terry moran, cynthia mcfadden and bill wire in new york city, this is "nightline," march 27, 2012. good evening, i'm cynthia mcfadden. we begin tonight with a frightening day for aviation safety. the latest incident took place in the air between new york and amarillo, texas when the pilot seemed to go ber zerk. while the flat landed safely, the event has many asking tonight whether airplane personnel are under too much stress and too little scrutiny. >> reporter: captain clayton oz bonn, trusted with the lives of

many passengers on a flight to new york to las vegas. he was taken off the plane in handcuffs and a wheelchair by police after six apparentlies wrestled the plait to the ground, concerned he was determined to crash the plane. >> first time landing an airplane when you have your knee on the neck of an airplane captain. >> reporter: it happened three hours into the cross-country flight. the co-pilot calling for an emergency landing. >> jet blue, authorities and medicals to meet us at the airport. >> yes, sir. jet blue, 191, they have the stairs ready. >> reporter: sources say the veteran captain, a commercial pilot since 1989, was not at the controls, but began acting eratically, flipping switches in the cockpit and appearing

confused. his ko pilot tricked him into going to the passenger compartment to check something out and then locked the door behind him. >> the captain of the plane went bers erk, starting banging on the cockpit door, let him in, give him the code. >> a third jet blue pilot, off duty and riding with a passenger, slipped into the cockpit to help with the control. the angry captain began pacing the aisle. >> he was beelining to the front of the plane, towards the cockpit. >> reporter: try desperately to get into the cockpit, but this group of passengers was determined to not let that happen. >> i have five kids. >> david gonzalez, a former corrections officer from new york city brought him down, stopping the captain's tirade. he was yelling about al qaeda, a bomb, and threatening the plane is going down. >> i took the pilot down.

i was able to put a choke hold on him. i was able to get him weak from getting his wind pipe. and when i noticed i buckled, i had him where i needed him. >> reporter: the men sat on the pilot until landing. they took off their belts and tied his legs. >> he broke one of the elastics tie-wraps with his feet. he was a powerful guy. >> reporter: the faa called this a medical emergency. the fbi is investigating and law enforcement sources tell abc news the pilot suffered a panic attack. surprisingly while airplane pilots submit to yearly medical tests by an faa doctor, psychiatric screening isn't required. >> probably no suspicion on the doctor's part, therefore he's going to assign your certificate that you're cleared to fly. >> reporter: kevin hyatt, a veteran commercial captain and safety consultant, says there's

no specific training for what to do if your co-pilot loses it during flight. >> there are visual cues that the other pilot is trying to pick up on to see if there's something wrong or something amiss. >> reporter: it's not the first time airline crews have alarmed, even killed passengers. october 1999, egypt air flight 990, a 767 from new york to cairo, with 217 passengers, disappeared. the co-pilot deliberately crashing into the atlantic. in another plane over indonesia, nose-dived, killing 104 passengers. investigators say the pilot committed suicide, taking everyone with him. just this month an american airlines attendant had to be restrained after threatening impending doom. the plane returned to the gate and she was taken away

complaining of psychiatric problems. then there's the jet blue flight attendant who pulled the chute, grab the emergency escape slide. air travel and the industry filled with stress today. a "nightline" investigation revealed the hard life of some airline pilots, sleeping in slop houses, and in airport waiting rooms because of short turnarounds. john nance says incidents like todays are rare, but remember, pilots are human too. >> this is in the background of a lot of stress. the stress isn't keeping the airplane in the air. it's keeping your job in a time when people want more for less, when the airlines are in bankruptcy constantly and when we as a country have almost gone off the deep end financially in the last few years. >> reporter: tonight captain oz bonn remains under observation,

relieved of duties. his passengers, still in shock. >> it was the longest flight to vegas i've ever had, 13 hours. unbelievable. >> for "nightline," i'm jim avila, in washington. >> up next, an exclusive interview with the man who famously sunk the titanic, in the movies anyway. director james cameron says he got this wrong.

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don't miss out. 15 years ago when titanic first came out, it was the most expensive movie ever made. many thought it was destined to be a soggy mess.

well, wrong. the film exceeded even the director james cameron's high hopes, winning an astounding 11 academy awards. it also became the second highest grossing film of all time right behind another cameron film, avatar. tonight in london, titanic 3d premiered and james cameron sat down to dish the film and the sea with abc's nick watt. >> tonight in london the stars glitered and the crowds here for the world premiere of a movie 15 years old. >> i wasn't the iceberg. i didn't kill 2,000 people. >> there's james cameron and his wife. they met on the movie, which cameron has remastered and turned 3d. that's the premiere tonight. cameron almost took it a step further. because since he filmed it, cameron has become titanic

obsessive. years of research that have revealed, mistakes he made, and new detail. >> i suppose there was a moment where it passed through my mind that i could correct the film and have it actually match what titanic really looked like. >> there was another part of my mind that said no. you're going to get a nutter standing on the street corner, babbling away. >> i wonder if you've almost become too obsessed in the detail. >> if you want to use the term obsession, that's fine. >> reporter: since making titanic, he's dived that wreck dozens of times in a submersible. >> sure we found places where the set was wrong, a little bit. this was wrong, that was wrong. glass missing from a door, things like that. >> reporter: his movie is maybe 99% right, but he knows it's not perfect. remember this pivotal scene. cameron knows the way titanic sank and the way jack and rose

went down, probably didn't happen exactly that way. >> there was probably a moment where it was standing prone in the water, but it wasn't quite as dramatic and static as we showed it in the film. it probably wasn't straight up. probably at an angle. >> 353 meters. >> a little artistic license is totally fine from a director who's gone this deep. >> i thought i'd thought of everything about titanic. >> reporter: he was wrong. cameron just gathered eight of the world's top titanic experts for an upcoming national geographic documentary. they analyze locations of seemingly innocuous shards of debris, ran models and found unlikely heroes. >> every time they flooded the ship in the computer model and ran the simulations, it always tipped over to one side or the other. the titanic didn't do that. >> reporter: think of the costa

concordia, most ships that flounder tip onto their sides. titanic stayed upright. >> none of the people from the engineering spaces survived. i think what we learned from that is that they were working right until the very last, running pumps, doing things, moving water around in the tanks to keep that ship as level as they could so the life boats could be launched down both sides. so life boats nearly got away. >> all right, buddy. >> cameron nearly missed tonight's premiere because yesterday he was at the bottom of the trench in the western pacific, seven miles down, the deepest spot in our world's ocean. >> it's the darkest most remote place they think you could find on this planet. >> reporter: with creatures that don't have eyes? >> either no eyes at all or eyes that are adapted for seeing the bioluminescence of other animals to mate with them or prey on

them. pretty much like us. >> reporter: only two other humans have been down that deep. back in 1962, and they went together. cameron went alone. i'm surprised you're still alive. >> i'm not. i've got some good engineers. if i thought we were going to die, diving in the sub, we'd be itd yots. >> when you go past titanic and you go past -- >> reporter: he's a smart guy. trail-blazing ocean explorer. >> you almost don't want to say. >> reporter: and a perfectionist movie maker turned titanic 3d. >> it's a horrific process. it's mind-numbing really, but it has to be done right. >> reporter: he says, and i agree, it's better in 3d. >> of course you know you're in a cinema. you know it's not real and it was filmed 15 years ago.

kate and leo don't look like that anymore, but there's a part of your brn saying, we got to take it seriously because this is three dimensional. so now the emotions count more. >> reporter: and after all the research, it's the same movie. >> reporter: you didn't change a frame? >> no, i didn't change a frame. the ship still sinks at the end. jack still dies. ♪ >> why'd you do that? >> reporter: and millions of people will flock to see the movie again. one more thing, near, far -- i'm nick watt for "nightline" in london. >> oh, that song, the 3d movie is in theaters april 4, and the documentary, titanic with james cameron airs april 8 on the national geographic channel.

it's also the cover story on their magazine. still ahead, penguins versus pandas. we'll take you to the zoo where an all-out battle of cuteness is under way.

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and fim finally tonight's last story seemed to lend itself to poetry. so with apologies to dr seuss, a trip to see penguins and pandaas you'll see, wasn't at all as we thought it would be in this zoo in scotland, the pandas are stars, causing the penguins emotional scars. so why are these little guys so jealous? >> reporter: this is the case of an epic rivalry that turned

ugly. let's start with the penguins. for a hundred years they've put the zoo on the map. they say it's the first zoo in the world to exhibit them. today they frolic, and dart b delighting visitors. do you ever get tired of working with penguins? >> never. >> for 11 years lesley garland has had the job of being the penguin keeper. >> each of them has a different personality? >> they do. sometimes it's like how we can tell them apart, by their personality. >> reporter: for as long as anyone can remember, they have been king of the beast at the edinburgh zoo, number one with visitors. >> we have such a large colony, perhaps the largest one in the world. >> reporter: enter the pandas, after years of negotiation, two giant pantas arrived here in edinburgh on long-term loan from

china. that very contented panda is the female who's named sweetie. that's not a man in a panda suit. that's the male panda who's name means sunlight. not surprisingly, they've been an instant hit. >> reporter: so the penguins are no longer -- >> no longer number one. >> the pandas have unseated the penguins. >> yes. >> reporter: that's painful? >> it is, yes. >> reporter: which brings us to poop. they're like projectiles. meet them with the devil red eye. they are called rock hoppers and they're at the center of this dirty tale. >> just approaching the side now, you'll see we've got, the penguins are at the top there.

they've chosen to nest up there, which didn't in the past cause problems, but now this is the main entrance to the pandas. these people are waiting to see the pandas. and because they're lining up here, whenever theez guys go to the bathroom, it's been hitting the people in the head. >> reporter: they're pooping on the people. penguin revenge? >> it could be, yes. >> reporter: which brings us to plexiglass, a narrow band of it installed on theenal of the penguins perch. that's kind of stopped it now. we'll keep our fingers crossed it works. >> reporter: take comfortable, in ten years, those cute cuddly pandas have to go back to china, then they'll be ruling the roost at the edinburgh zoo once again.