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flightgearpilot Member
Joined: 21 Dec 2006 Posts: 711 Location: VOBL
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Posted: Tue Feb 13, 2007 1:02 pm Post subject: Night time visual landing? |
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Hi all,
Came back from GOI to BLR on sunday night as all afternoon flights were delayed due to Aero India (shucks, i really wanted to see the airshow from up there!)
One thing I have noticed in all the night-time flights is that it is next to impossible to locate an airport or runway. The runway lights are hardly visible and are marred by bright lights all around them -- especially in cities like BLR. Also, most Indian airports don't seem to have any moving beacons that direct pilots at the edge of runways. In fact, the airport area and the runway are often times the darkest patch in the sea of lights around. I've seen this in BOM, GOI, BLR, MAA and several other airports in India.
So what do pilots do if they need to do a visual landing during night time?
-FGP
PS: *sigh* when will SpiceJet offer direct flights between BLR and GOI? I'm sick of having to travel by DN on official trips because universities don't think very high of academicians.. DN reminds me of the push-and-shove we used to do in busses as students. |
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HAWK21M Member
Joined: 19 Dec 2006 Posts: 8132 Location: Mumbai, INDIA
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Posted: Tue Feb 13, 2007 8:19 pm Post subject: |
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Thats where your Nav Equipment come in handy,as Visual references are tough at Night.
regds
MEL _________________ Think of the Brighter side !!! |
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flightgearpilot Member
Joined: 21 Dec 2006 Posts: 711 Location: VOBL
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Posted: Wed Feb 14, 2007 2:32 pm Post subject: |
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So in case of an emergency due to nav failure forcing the pilots to land visually, our airports seem to pose a huge risk..
Correct me if i am wrong; i remember watching the Nat Geo documentary on the IC814 hijack, where the pilots had almost landed on a highway in Karachi. Was that because they had to resort to visual cues for landing?
Suddenly i don't feel safe flying in the night anymore! |
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the_380 Member
Joined: 19 Dec 2006 Posts: 2329 Location: Mumbai, India
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Posted: Wed Feb 14, 2007 5:55 pm Post subject: |
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flightgearpilot wrote: |
Correct me if i am wrong; i remember watching the Nat Geo documentary on the IC814 hijack, where the pilots had almost landed on a highway in Karachi. Was that because they had to resort to visual cues for landing?
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Dude first of all flying is much more sophisticated so dun fear
As far as IC 814 is concerned the issue was different. Since it was very less time that India-Pakistan had fought a bloody war in Kargil, Pakistan didn't want an international crisis on their soil...so they wanted Flight 814 to land anywhere but not in Pakistan. To get their intentions in actions, they switched off all runway and airport lights, the pilots were unaware of this...what they assumed as the runway later turns out to be a highway. Then when the Karachi tower realises the intensity of their fuel shortage they agree to allow Flight 814 to land on their soil but only to take fuel. no offloading of any passengers
regards _________________ http://www.myspace.com/avsatsworld
A Walt Disney and 20th Century Fox Audio Producer!!! |
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selecta Member
Joined: 24 Dec 2006 Posts: 813 Location: ORD
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Posted: Wed Feb 14, 2007 8:29 pm Post subject: |
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Although I can't speak on behalf of the big guys, I seem to find it easier to locate airports at nights.
You have a lot of visual clues such as rotating beacons at the airports, city lights which can guide you in the general direction of an airport plus they're are noted on your sectional map and ATC if you want vectors to the airport. _________________
http://openflights.org/user/citrus |
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shivendrashukla Member
Joined: 21 Dec 2006 Posts: 1354 Location: Mumbai, India
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Posted: Wed Feb 14, 2007 8:37 pm Post subject: |
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Avijit is right in the case of IC 814.
Otherwise as I am aware, there are RADAR coverage nearby airports. In those airports where ILS is not availabe there are NDB and VOR approaches also.(Navigational) Alternatively, a pilot can request ATC for airport vectors, where ATC relies on radar and issues instructions to pilot so that he can align the aircraft with the runway. At about a distance of 15-20 NM from the airport the ATC asks the pilot for a visual contact with the airfield. If the answer is positive then only landing permission is given and the aircraft is allowed to descend from it's holding altitude and the aircraft makes a normal landing. Else ATC issues more instructions to the pilot so that he cn spot the runway.
Cheers
Shivendra |
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stealthpilot Member
Joined: 19 Dec 2006 Posts: 2325 Location: BLR, DXB
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Posted: Thu Feb 15, 2007 7:44 am Post subject: |
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Night visual approaches actually aren’t that hard. If they’re vectored to final a pilot should have absolutely no problem landing (assuming the weather is good of course)
As Mel and Shivendrashukla mentioned, there are VOR/RNAV/NDB (I don’t know who still uses NDBs though) approaches and radar vectors (no chance in a busy terminal area). These approaches (almost always) line you up on final. Even if they don’t line you up, there WILL be some sort of ALS (approach light system) in place. If there’s no ALS, then you can’t do night landings.
These are non precision approaches and you transition to a visual approach when you have the runway in sight.
You mentioned that you can never see the runways, do you mean from the passengers seat? If that’s the case it’s a lot harder from back there, for one you can’t see in front of you and secondly you have no idea where the runway is. Maybe if you knew more or less where to look things would be easier. It’s certainly nowhere close to impossible
Even with some sort of systems failure if the pilot more or less knows where he is he could land visually at night. The greatest fear would be the weather. I see what you mean about the ALS being hard to pick up with all the nearby roads etc, but as far as I know it’s usually not that much of a problem.
shivendrashukla wrote: | At about a distance of 15-20 NM from the airport the ATC asks the pilot for a visual contact with the airfield. If the answer is positive then only landing permission is given and the aircraft is allowed to descend from it's holding altitude and the aircraft makes a normal landing. Else ATC issues more instructions to the pilot so that he cn spot the runway.
Cheers
Shivendra |
Wow, they must have some eyes to see the runway 20nm away . In any case what you said is not usually the case (maybe it is in remote locations)
Usually, an aircraft will be vectored or whatever closer to the airport. When a plane is 15nm out he’s most probably talking to approach, once he's handed over to the tower- they clear him to land. If the weather is good the controllers will probably just say **** runway 16R cleared to land and the pilot does, he doesn’t have to ask or confirm runway in sight. In fact a pilot can be cleared for a visual approach with 2 aircrafts in front of him- as long as he has them and the runway in sight. _________________ eP007 |
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stealthpilot Member
Joined: 19 Dec 2006 Posts: 2325 Location: BLR, DXB
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Posted: Thu Feb 15, 2007 7:47 am Post subject: Re: Night time visual landing? |
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flightgearpilot wrote: | In fact, the airport area and the runway are often times the darkest patch in the sea of lights around. I've seen this in BOM, GOI, BLR, MAA and several other airports in India. |
Hehehe when I first started flying (not like I have done that much of it) I was told the easiest way to visually find my airport from far out was to look for the 'blank' patch on the ground. At night, seeing a dark patch surrounded by lights can help a lot. _________________ eP007 |
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flightgearpilot Member
Joined: 21 Dec 2006 Posts: 711 Location: VOBL
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Posted: Thu Feb 15, 2007 10:07 am Post subject: |
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Hey, nice to see so many replies; Thanks!
Quote: | Dude first of all flying is much more sophisticated so dun fear |
yes, i can imagine..
Quote: | Hehehe when I first started flying (not like I have done that much of it) I was told the easiest way to visually find my airport from far out was to look for the 'blank' patch on the ground. At night, seeing a dark patch surrounded by lights can help a lot. |
my feelings, exactly But yeah, all these are from a passenger seat. Never been inside the flightdeck of a real plane. The only "flightdeck view" I have is on Microsoft and flightgear simulators. The airports look positively bright in simulated worlds |
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VABBy Member
Joined: 19 Dec 2006 Posts: 823 Location: DEL
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Posted: Thu Feb 15, 2007 10:48 am Post subject: |
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flightgearpilot wrote: | watching the Nat Geo documentary on the IC814 hijack, where the pilots had almost landed on a highway in Karachi. |
Paaji that was Lahore nt Karachi. Secondly i guess the body of the injured pax was offloaded bt i guess he had scumbbed to the injuries. _________________ Expeditors- You'd be surprised how far we will go for you www.expeditors.com |
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AKLDELNonstop Member
Joined: 19 Dec 2006 Posts: 1066 Location: Auckland
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Posted: Thu Feb 15, 2007 12:03 pm Post subject: |
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VABBy wrote: |
Paaji that was Lahore nt Karachi. Secondly i guess the body of the injured pax was offloaded bt i guess he had scumbbed to the injuries. |
It was indeed Lahore and not KHI. Infact if I remeber correctly, the a/c took off from ATQ and travelled 13kms to LAH and hadvery very little fuel which is why the pilot tried a desperate landing on the highway
Cheers _________________ Geniuses are always misunderstood in their lifetimes. |
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flightgearpilot Member
Joined: 21 Dec 2006 Posts: 711 Location: VOBL
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Posted: Thu Feb 15, 2007 12:22 pm Post subject: |
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Oh yeah, my mistake.. It was indeed Lahore
-fgp |
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the_380 Member
Joined: 19 Dec 2006 Posts: 2329 Location: Mumbai, India
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Posted: Thu Feb 15, 2007 7:18 pm Post subject: |
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VABBy wrote: |
Secondly i guess the body of the injured pax was offloaded bt i guess he had scumbbed to the injuries. |
Two passengers were stabbed... (they had rubber pistols...fake toys) Capt. Devi Sharan requested Lahore ATC to allow them to offload the old and injured passengers there and then proceed but they clearly denied. So the passengers could be offloaded only at some miliary base at DXB where one passenger died and the other survived. The dead passenger was on a honeymoon and his wife realised what happened to her newly wed husband only when they were 'freed' by apna mantri sahab. Sad to hear that
AKLDELNonstop wrote: | Infact if I remeber correctly, the a/c took off from ATQ and travelled 13kms to LAH and hadvery very little fuel which is why the pilot tried a desperate landing on the highway |
It was a mistake dude...he mistook the highway for the rwy as was not aware that rwy lights were switched off _________________ http://www.myspace.com/avsatsworld
A Walt Disney and 20th Century Fox Audio Producer!!! |
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AKLDELNonstop Member
Joined: 19 Dec 2006 Posts: 1066 Location: Auckland
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Posted: Fri Feb 16, 2007 5:24 am Post subject: |
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the_380 wrote: |
It was a mistake dude...he mistook the highway for the rwy as was not aware that rwy lights were switched off |
Ok my source was a crew member on board tht flight and what happened was LAH lights had been switched off as they dint was the a/c landing there. And since there was no fuel left the plane would have crashed which is why he desperately tried to land on the highway knowing tht it was a highway(btw im sure pilots can distinguish between runway and highway lights) ...now LAH ATC realised tht there wud be slaughter if the a/c landed on the runway so in the last moment they switched on the runway lights and the a/c landed on the runway.
Cheers _________________ Geniuses are always misunderstood in their lifetimes. |
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Boeing7xx Member
Joined: 23 Dec 2006 Posts: 477 Location: WSSS
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Posted: Fri Feb 16, 2007 12:31 pm Post subject: |
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Just to put things into perspective, in WW I and WW II, the pilots had nothing more than a compass, a gyro, throttle and the stick to navigate over waters and cities. That's pretty much all you need even today, if you know your nav well. |
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shivendrashukla Member
Joined: 21 Dec 2006 Posts: 1354 Location: Mumbai, India
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Posted: Fri Feb 16, 2007 8:31 pm Post subject: |
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stealthpilot wrote: |
shivendrashukla wrote: | At about a distance of 15-20 NM from the airport the ATC asks the pilot for a visual contact with the airfield. If the answer is positive then only landing permission is given and the aircraft is allowed to descend from it's holding altitude and the aircraft makes a normal landing. Else ATC issues more instructions to the pilot so that he cn spot the runway.
Cheers
Shivendra |
Wow, they must have some eyes to see the runway 20nm away . In any case what you said is not usually the case (maybe it is in remote locations)
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OK. I was talking generally of IAF ops. I guess it's different in civil. U know how IAF airfields are. Most of them don't have ILS. I was once in an ATC tower during night when an IL 76 was supposed to land. He was 20NM when he was asked to report back when airfield was in sight. He did about a distance of 10NM after which he was cleared to descend and land. So was talking in respect to this.
Cheers
Shivendra |
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justbala Member
Joined: 11 Jan 2007 Posts: 1898 Location: Bangalore
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Posted: Thu Feb 22, 2007 5:38 pm Post subject: |
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CCJ was the first airport in India to have runway lead-in lighting system installed for night time landing.
Given the table top location of the runway and the hilly terrain around, it's otherwise dangerous while landy at night and in low visibility.
http://en.wikipedia.org/wiki/Calicut_Airport |
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iflytb20 Member
Joined: 27 Jan 2007 Posts: 1079 Location: Next to the Airport
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Posted: Thu Feb 22, 2007 10:53 pm Post subject: |
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but it still is useless..CCJ is probably the only airport in the world where a Non-Precision Approach has a lower minima than an Precision aka ILS approach |
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aarbee Member
Joined: 19 Dec 2006 Posts: 328 Location: WAS/AMD
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Posted: Fri Feb 23, 2007 12:40 am Post subject: Re: Night time visual landing? |
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flightgearpilot wrote: |
One thing I have noticed in all the night-time flights is that it is next to impossible to locate an airport or runway. The runway lights are hardly visible and are marred by bright lights all around them -- especially in cities like BLR. Also, most Indian airports don't seem to have any moving beacons that direct pilots at the edge of runways. In fact, the airport area and the runway are often times the darkest patch in the sea of lights around. I've seen this in BOM, GOI, BLR, MAA and several other airports in India.
So what do pilots do if they need to do a visual landing during night time?
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It's easy. look for the darkest patch. LOL |
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