Airports India - - NEWS - Su­bit Ko­bi­raj EX-DGM (CNS)

Air Nav­i­ga­tion Ser­vices (ANS) are the ser­vices pro­vided to air traf­fic dur­ing all phases of op­er­a­tions; in­clud­ing, air traf­fic man­age­ment, com­mu­ni­ca­tion, nav­i­ga­tion and sur­veil­lance, me­te­o­ro­log­i­cal ser­vices for air nav­i­ga­tion, search and res­cue, and aero­nau­ti­cal in­for­ma­tion ser­vices. To pro­vide qual­ity safety ser­vices which con­cern hu­man lives, we re­quire a sus­tain­able back­bone in the form of a huge ANS in­fra­struc­ture which com­prises of com­mu­ni­ca­tion sys­tems (both air-to-ground and ground-to-ground), nav­i­ga­tion sys­tems (for air­craft’s nav­i­ga­tion and safe land­ing), sur­veil­lance (to mon­i­tor highly dense airspace with air­craft move­ments) and the air traf­fic man­age­ment au­to­ma­tion sys­tem. These are col­lec­tively re­ferred to as the CNS-ATM sys­tem in the avi­a­tion com­mu­nity.

There are var­i­ous In­ter­na­tional Civil Avi­a­tion Or­gan­i­sa­tion (ICAO) doc­u­ments that out­line the spec­i­fi­ca­tions and the tol­er­ance lim­its of the sys­tems to be main­tained for safe op­er­a­tion of air nav­i­ga­tion ser­vices. ICAO sets the Stan­dards and Rec­om­mended Prac­tices (SARPS) nec­es­sary for avi­a­tion safety, se­cu­rity, ef­fi­ciency and en­vi­ron­men­tal pro­tec­tion, on a global ba­sis. With in­creased air traf­fic move­ments, the fail­ure of the CNS-ATM sys­tems can re­sult in a huge fi­nan­cial loss, sig­nif­i­cant prop­erty dam­age, dam­age to the en­vi­ron­ment and even loss of life. Sys­tem degra­da­tion of the safety crit­i­cal CNSATM sys­tems is unac­cept­able as global air traf­fic ser­vices de­pend upon them. As per ICAO, the men be­hind these sys­tems for pro­cure­ment, in­stal­la­tion, air cal­i­bra­tion and main­te­nance are the Air Traf­fic Safety Elec­tron­ics Per­son­nel (ATSEP). They play a ma­jor role in the tech­ni­cal do­main to en­sure air nav­i­ga­tion ser­vices are con­tin­u­ous, safe, re­li­able and in­te­grated.

At Air­ports Au­thor­ity of In­dia, the CNS-ATM sys­tems are main­tained and cal­i­brated in-house by var­i­ous di­rec­torates. The plan­ning and pro­cure­ment is con­ducted by Cns-plan­ning, in­stal­la­tion by the Ra­dio Con­struc­tion and De­vel­op­ment Unit (RCDU), air cal­i­bra­tion of nav­i­ga­tion sys­tems by the Flight In­spec­tion Unit (FIU), op­er­a­tion and main­te­nance by Cn­sop­er­a­tion and Main­te­nance, in-coun­try com­po­nent level re­pair fa­cil­ity (known as the Spe­cialised Main­te­nance Units, SMUS) and the safety man­age­ment au­dit by the Avi­a­tion Safety Direc­torate.


Main­te­nance refers to all ac­tions ap­pro­pri­ate for re­tain­ing an item/part/equip­ment, or restor­ing it to its given con­di­tion. Fur­ther, main­te­nance is a func­tion that must be per­formed un­der ad­verse cir­cum­stances and stress, and its main ob­jec­tive is to rapidly re­store the equip­ment to a state of op­er­a­tional readi­ness us­ing the avail­able re­sources.

Main­te­nance of CNS-ATM sys­tems are con­ducted at three-lev­els:

LEVEL-1: Car­ries out main­te­nance tasks that are pri­mar­ily as­so­ci­ated with the im­me­di­ate ser­vice restora­tion or re­con­fig­u­ra­tion level (front panel level) and that in­volves in-depth fault anal­y­sis at the sys­tem/equip­ment level (func­tional level).

LEVEL-2: Car­ries out pre­ven­tive and cor­rec­tive main­te­nance; tasks that in­volve in-depth fault anal­y­sis of a faulty Line Re­place­ment Unit (Lru/printed Cir­cuit Boards (PCB) or mod­ules), which in­cludes, de­tailed di­ag­no­sis of hard­ware and soft­ware prob­lems of the au­to­ma­tion sys­tems.

LEVEL-3: Car­ries out the in-coun­try com­po­nent level main­te­nance/re­pair of faulty LRU. This re­duces the turn­around time (TAT) of get­ting the un­ser­vice­able Mod­ules/ PCBS re­paired and the down time of vi­tal CNSATM fa­cil­i­ties.

The ob­jec­tive of hav­ing three lev­els of main­te­nance is to pre­pare for con­tin­u­ous avail­abil­ity of CNS/ATM fa­cil­i­ties for op­er­a­tional use.


Keep­ing in view the chang­ing con­cepts of tech­nol­ogy and main­te­nance, in the year 2001, it was de­cided that a Cen­tralised Main­te­nance Cell (CMC) will be set-up at AAI’S Cor­po­rate Head Quar­ter. Along with CMC, the Spe­cialised Main­te­nance Unit (SMU) was also es­tab­lished for in-coun­try com­po­nent level re­pair fa­cil­i­ties at Re­gional Head Quar­ters and at sev­eral ma­jor air­ports.

To­day, the SMUS are lo­cated at Delhi, Mum­bai, Chen­nai, Kolkata, Hy­der­abad and Ahmed­abad, hav­ing in-coun­try re­pair fa­cil­i­ties for 25 va­ri­eties of CNS-ATM sys­tems with an equip­ment pop­u­la­tion of ap­prox. 2860.

SMUS in ad­di­tion to the In-coun­try Re­pair Fa­cil­ity (ICRF) for dif­fer­ent CNSATM fa­cil­i­ties of AAI also un­der­take re­pair of fa­cil­i­ties and un­ser­vice­able mod­ules/ Printed Cir­cuit Boards of ex­ter­nal or­gan­i­sa­tions like the Air Force, the Navy and Hin­dus­tan Aero­nau­tics Ltd. (HAL).

SMUS also de­velop many indige­nous tech­niques and fab­ri­ca­tion of ex­ten­der cards, PCBS etc. for the re­pair of so­phis­ti­cated state-of-the-art CNS-ATM sys­tems.

In the year 2012, to share the ex­per­tise and the costly tools and test equip­ment, it was de­cided to have num­bered SMUS un­der one roof at the Begum­pet Air­port, Hy­der­abad. To­day, there are seven SMUS of dif­fer­ent makes and mod­els with CNSATM fa­cil­i­ties func­tion­ing at Hy­der­abad.

SMUS also play a cru­cial role dur­ing nat­u­ral calami­ties like floods and cy­clonic storms, by quickly restor­ing the dam­aged fa­cil­i­ties of air traf­fic ser­vices en­sur­ing that air­ports can re­sume their nor­mal op­er­a­tions at the ear­li­est. SMUS played a vi­tal role in the quick restora­tion of CNS fa­cil­i­ties at the Chen­nai Air­port af­ter the air­port was flooded in De­cem­ber 2015. SMUS also pro­vided main­te­nance sup­port by re­pair­ing com­mu­ni­ca­tion/ Re­mote Con­trol Air-ground (RCAG) mod­ules, which were dam­aged dur­ing the Hud-hud cy­clonic storm in 2014, at Vizag.

The new ma­jor projects in pipe­line are the es­tab­lish­ment of the ICRF for the ELDIS RADAR in Delhi, the in-house Test Equip­ment Cal­i­bra­tion Lab­o­ra­tory at Hy­der­abad and de­vel­op­ing in-house Digital Voice Recorders at SMU Mum­bai.

Air­ports Au­thor­ity of In­dia, the only air nav­i­ga­tion ser­vice provider in the coun­try, is proud to pro­vide the high­est level of CNS-ATM main­te­nance sup­port through these highly spe­cialised state-of-the-art in-coun­try re­pair fa­cil­i­ties that en­sure the con­tin­ued de­liv­er­ance of safe travel.

…main­te­nance is a sci­ence since its ex­e­cu­tion re­lies on, sooner or later, most or all of the sciences.

It is an art be­cause seem­ingly iden­ti­cal prob­lems reg­u­larly de­mand and re­ceive vary­ing ap­proaches and ac­tions and be­cause some man­agers, fore­man and me­chan­ics dis­play greater ap­ti­tude for it than oth­ers show or even at­tain.

It is above all a phi­los­o­phy be­cause it is a dis­ci­pline that can be ap­plied in­ten­sively, mod­er­ately or not at all, de­pend­ing upon a wide range of vari­ables that fre­quently tran­scend more im­me­di­ate and ob­vi­ous so­lu­tions.

In-coun­try Re­pair Fa­cil­ity

An on­go­ing re­pair

SMU, Ahmed­abad CA-20 adap­tor & bare PCB for THALES DVOR High Volt­age Pro­tec­tion Cir­cuit

Newspapers in English

Newspapers from India

© PressReader. All rights reserved.