Showing posts with label Air Traffic Control. Show all posts
Showing posts with label Air Traffic Control. Show all posts
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A Jetlite Boeing 737-800, registration VT-SJH performing flight S2-320 from Kolkata to New Delhi with 140 persons on board, was forced to make three landing attempts due to weather and a fault Instrument Landing System at New Delhi's Indira Gandhi International Airport.

The flight was on approach to New Delhi's runway 29, when a thunderstorm went into its final approach and landing path. The crew aborted the landing and requested for a different runway.

Air Traffic Control (ATC) vectored the aircraft for an ILS approach to runway 11 (the opposite side of runway 29). However, when the crew attempted to intercept the ILS localizer on runway 11, the ILS was found to be malfunctioning.

Air Traffic Control then instructed the pilots to swing over to runway 10. However, while the airplane manoeuvred to align with runway 10, Air Traffic Control reported that the ILS on runway 11 was now working.

The airplane finally landed on runway 11 on the third approach 20 minutes after the first approach attempt.

JetLite refused to answer my queries if they have lodged any complaint or protest about the malfunctions with either the Airports Authority of India (AAI) whose controllers operate the ATC or with the airport operator Delhi International Airport Limited (DIAL). They issued me this statement

"Due to weather detected on the aircraft weather radar S2 320 requested a runway change from R/W 29 to R/W 11. While the aircraft was being vectored for an approach to R/W 11, non-availability of the ILS (Instrument Landing System) of R/W 11 necessitated the change of the approach to R/W10. However, during the approach to R/W 10 a downgrade of the R/W10 ILS and subsequent availability of R/W 11 ILS resulted in the approach and landing being made on R/W 11. The changes in the approaches did not result in any go-arounds."

METARS:
VIDP 291300Z 00000KT 3500 HZ SCT035 FEW040CB BKN090 23/19 Q1010 TEMPO TSRA
VIDP 291230Z 18005KT 3500 HZ SCT035 FEW040CB BKN100 23/19 Q1009 TEMPO TSRA
VIDP 291200Z 18006KT 3500 -DZ SCT035 FEW040CB BKN100 23/18 Q1009 TEMPO TSRA
VIDP 291100Z 18005KT 3500 HZ SCT035 FEW040CB BKN100 26/17 Q1009 NOSIG
VIDP 291030Z 20005KT 3500 HZ SCT035 FEW040CB BKN100 26/17 Q1009 NOSIG
VIDP 290930Z 31005KT 2800 TS SCT035 FEW040CB BKN100 27/17 Q1010 BECMG 3000
VIDP 290900Z 28003KT 2800 HZ SCT035 FEW040CB BKN100 28/17 Q1010 NOSIG
VIDP 290830Z 01005KT 2600 HZ FEW035 FEW040CB BKN100 28/17 Q1010 NOSIG
VIDP 290730Z 32005KT 2800 HZ FEW035 FEW040CB BKN100 27/18 Q1010 BECMG 3000
VIDP 290700Z 34005KT 2800 HZ FEW035 FEW040CB BKN100 27/18 Q1011 NOSIG


Thanks to Simon Hradecky at Aviation Herald for the tip.

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The Aero India 2009 continues to draw large crowds, and for today and tomorrow, a huge crush of footfalls is expected.

Aerial displays in the morning and afternoon sessions are as spectacular and breathtaking as in any major air show held worldwide. While the public focusses on the magnificent flying machines and their daredevil pilots, they remain blissfully unaware of the singular edifice that facilitates and coordinates all the flying activity – the Air Traffic Control (ATC) - the heart of the air show, at Air Force Station (AFS) Yelahanka (VOYK).

Activity at the ATC begin before dawn and continue well beyond dusk. As the premiere training station for all Indian Air Force (IAF) transport wing, AFS Yelahanka, is one of the busiest military airfields in the country. Not only does it handle over 60,000 movements annually, it also has to contend with two major airfields - Bengaluru International Airport (BIA), just 4 nm to the north, and the HAL airport 10nm south. A task well handled by Chief Operations Officer (COO), Wing Commander N.V.M. Unnithan and his team.

Assisting him and bristling with activity, a 24x7 manned 'Base Operations Room' controls all aspects of the flying and coordinating with various agencies including 'flying display director', routine movements, VIP protocol, ground handling agencies, BIA, and HAL remains fully operational at the ATC tower.

While an anxious F-16 pilot, USAF Lieutenant Mike Benson, coordinating the flight schedule of the C-130 Hercules, was happy after the arrangements were explained by the COO, Captain Uphoff and Lieutenant Michael Schumacher (just a coincidence) of the German Air Force's Fighter Wing-73, technical team members of the Eurofighter Typhoon dropped by to thank the officials at the ATC, a gesture symbolic of the universal spirit exemplified at the air show.

Preparations began six months in advance. Coordination meetings were crucial as Aero India 2009 was the first air show since the opening of new airport (BIA) last year. With a lateral separation between the airfields of just 4.3 nautical miles it was imperative to halt all civilian flights at BIA during the air displays. Most visiting aircraft of the IAF had to be housed at HAL due to the space constraints at Yelahanka. There is full cooperation between all the three airports and the flight displays are going perfect as expected.

The proximity of the flight paths at Yelahanka and BIA is demonstrated by this photograph of the F16IN SuperViper by my photography guru and guide, Praveen Sundaram a.k.a. Photoyogi. Do take the time to check his photo-stream.

Significant improvements in airfield infrastructure, resurfacing of the taxi-track, airfield links, refitting of the runway lighting, drainage of the 8,500 feet long runway were completed in just four months, ahead of the show, as per senior ATC officer, Wing Commander Sunil Ninan.

Seated on the console panels in a glass-encased environment, the cool demeanour of the five ATC officers manning the consoles betray little of the highly stressful role the controllers undergo. The banner displayed at the entrance says it all - 'You are about to witness the most stressful profession in the world'.

While many in Indian commercial aviation complain about the accents of expatriate pilots, at Aero India there are many pilots from different countries, speaking in different accents, and the ATC controllers are equally adept at picking up the nuances, ensuring unambiguous and crystal clear communication between the pilots and ATC.

Flight safety remains paramount; all flight paths including the aerial displays, and restrictions are designed with risk mitigation in mind. AFS Yelahanka has the township of Yelahanka to the south, and is bounded to the north and east by BIA and its resultant development.

In an effort to restrict the bird activity especially during the flying displays that are flown at low-levels, adequate aerial surveys were done in the period leading to the air show. Ten 'bird scare' teams mounted on specially procured silent electric bikes prowl the entire airfield with double-barrel guns in the airfield area. In addition, 'whistlers', a pyro-technique device emitting high frequency, high-pitch sound that irritate the birds are being effectively used.

Closure of the fish, poultry, and meat markets in the near vicinity on specified days and covering water bodies (lakes and ponds) with nets are some of the initiatives undertaken by the IAF personnel at the base.

Despite these steps, birds are present in plenty, and BBMP officials have to get serious about sanitation and open-air meat markets in the Yelahanka, Devanahalli and Ejipura area

The meteorological forecasts during the air show got a boost with the installation of a 'Numerical Weather Prediction Module' enabling 24-hours observation watch, and 18-hours forecast watch, informed Wing Commander VK Choudhary, senior Met Officer at the base.

We have to applaud the efforts of all the people involved. From the policeman at Hebbal flyover, ensuring traffic gets to AFS Yelahanka quickly, to the IAF personnel at the base, the exhibitors, the display teams, pilots, and support crews, the government, and the organisers. It is a herculean effort executed with seamless precision and complete cooperation. Last, and certainly not the least, I hats off to the tireless efforts of the entire team at the Confederation of Indian Industry (CII), led by Greeta Varughese and Sourav Narayan Biswas. They have all been working 20+ hour days for the last two weeks, to ensure the show is an unbridled success it is.

Stay tuned for a photo-essay........

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Frankfurt airport, one of the busiest in the world, was shut down for 50 minutes this morning, due to a technical glitch in its Air Traffic Control.

The airport, was shrouded in fog, and the data transmission from the German weather service and the ATC broke down between 0635 and 0725, as per a spokesman for air traffic control.

This forced a cancellation of all flights in and out.

Airport operator Fraport reports 38 departing flights and 37 arriving flights. 25 flights already in the air, mostly long distance flights en-route to Frankfurt, were diverted to Cologne and Stuttgart airports.

The stoppage, caused significant downstream disruptions which took almost half the day to clear up.

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According to a PIB release, at a recent parliamentary session of the Rajya Sabha, Minister for Civil Aviation, Praful Patel informed that major work in modernisation of Air Traffic Control System (ATCs) has been undertaken at Delhi, Mumbai, Chennai, Kolkata, Hyderabad, Trivandrum, Mangalore, Bangalore, Nagpur, Ahmedabad, Varanasi and Guwahati.

The expenditure incurred by Airports Authority of India (AAI) on the modernisation of the Communication, Navigation and Surveillance and Air Traffic Management systems (CNS / ATM) during the last three years is as follows: (Rs. 5 Cr. = 1 Million)

  • for the year 2005-06, Rs 118.20 crores;
  • for the year 2006-07, Rs 66.15 crores;
  • for the year 2007-08, Rs 200.71 crores.
After the installation of modern navigational/landing aids, increase in the handling capacity of airspace and airport, enhanced safety, reduction in delays in flight, saving of fuel and thus minimisation of adverse affect on environment, have been observed. Other benefits accrued include uninterrupted operation of flights through airports during the periods of poor visibility, monitoring of aircraft movements in avoiding over-flying over the restricted and prohibited areas and more effective and efficient monitoring of runways during periods of poor visibility.

Patel informed that Monopulse Secondary Surveillance Radars (MSSRs) have been installed at Delhi, Mumbai, Chennai, Kolkata, Trivandrum, Guwahati, Nagpur, Mangalore, Ahmedabad, Bangalore, Hyderabad, Behrampur and Varanasi, by the AAI, at a cost of Rs 229 crore.

MSSR provides position, distance, call sign and altitude of the aircraft and data link between controller and pilot. It also provides seamless surveillance over territorial airspace by filling the radar coverage gaps for smooth and efficient air-traffic flow.

New Delhi, and Mumbai will be installing a GBAS navigation system similar to the one proposed at Newark Liberty airport, by 2010.

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Air traffic control is one of, if not, the most stressful job in the world. Air traffic control officers (ATCOs) have to be constantly on the alert, even when pilots make a mistake. We as passengers never hear of their deeds, only of their mis-deeds. In a tribute to ATCOs around the world, I present a collection of videos and audios.

We begin with a happy ATCO at JFK airport in New York.


Humour is always a good stress buster, and mothers-in-law appear to be a globally common source of pain, as this conversation between a JFK ATCO and a Virgin Atlantic flight demonstrates.


About a year ago, there was extreme commotion in the Indian skies with ATCOs bitterly complaining about the expatriate pilots, and their lack of English language skills, the universally accepted language of the skies. This audio exchange between Air China 981 and JFK ATC demonstrates the language problem.


Sometimes it is the accent or idioms of the ATCO that pilots do not understand. Given the busy conditions at most airports, it leads to confusion, then irritation, and anger, as we hear in this conversation between Etihad 503 (UAE), Asiana 222 (Korea) and a JFK ATCO.


And then there are times, where pilots really screw up and need to be rescued, as this re-creation of a scary incident at Providence, Rhode Island.


And as a closing, I am sure you too will feel sorry for this JFK ATCO, who is having a really bad day in the office.


So please take some time, and send a thank you letter to the ATCOs at your local airport.

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