November 2012 - Indian Airforce

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of sparrows or larks into an engine can be as damaging as ingesting a much larger vulture. This is especially true for bird groups like the short toed lark, wagtails, ashy crow sparrow lark etc. Time Spent in Airfield Environment. A bird that passes through the area and may only be spotted near the aerodrome once, obviously poses much less of a risk than one that spends the whole year in the local environment. A case in point is the migratory bird ‘in transit stopovers’ like that of the greater/lesser flamingo etc. Activity Cycle of the Bird. All bird species have a distinct feeding, sporting and resting cycle. Identifying this cycle of intense activity be permitted only above stipulated heights at certain airfields. Species Location wrt Operations. Those species that may be located farther from the airfield area, but could fly to great heights may pose more of a threat than species that spend their time within the airfield but do not fly very far from the group, for example all raptors like kites/eagles etc. The score for kites in this factor can be much higher since they fly at considerable heights. Also, a bird located 100 m off to the side of a runway poses a very different threat than one situated 100 m on the approach of the same in a 24 hr period will allow time specific control measures. For eg. if resting time is denied by creating constant disruption in their resting place, the birds would tend to find an alternate resting place outside the airfield. Additionally certain operations may / may not be permitted during specific periods of the day. For example despite green period timings, overshoots may runway. For example, the green bee eater may be abundantly available at a base, but rarely found on the R/W shoulders. Time Spent in Air. Those species of birds that spend a great deal of their time foraging on the ground or rarely change locations do not pose as great a threat as those species that fly about the airfield frequently. 6 Aerospace Safety N o v e m b e r 2 0 1 2 INDIAN AIR FORCE
Number of Reported Strikes. Knowing what bird or wildlife species have caused greater number of strikes at the airfield is generally quite predictive of future problems. This however takes time as the normal gestation period for the swab analysis results, is a few months. Therefore, for accurate prediction a larger database of a few years bird strike cases needs to be catered to. Ability to Actively Avoid Ac Collisions. Not all species are equally capable of actively avoiding a collision with an incoming aircraft. Crows, Kestrels etc. are quite adept at avoiding ac while a vulture Conclusion A risk assessment rating system is applied to each species at an airfield in order to determine a risk ‘rating’. This list should be used to prioritise wildlife control efforts and can be used as an index to help determine the overall effort and money that should be spent on preventing a strike of that particular species. Though only a guideline, this methodology can serve as an effective method of setting bird control priorities and may, in the long run, help SASIOs improve the effectiveness of bird control measures on their airfields. - Wg Cdr Anuj Pathak is notoriously unskilled at avoiding impacts with faster aircraft. Bird Response to Control Measures. Different birds need different approaches to control their activity. Certain birds would not respond to a particular control measure. Different measures would be required to tackle various bird species. For example spraying of insecticides, drum beating module, thumping parade etc, must be aimed specifically at different bird groups/ species. INDIAN AIR FORCE 2 0 1 2 N o v e m b e r Aerospace Safety 7
Page 1 and 2: AEROSP CE Safety FOCUS: AIR TRAFFIC
Page 3 and 4: Editorial he onset of winter is a w
Page 5 and 6: Expecting the ac to report finals a
Page 7: species posing the greatest risk to
Page 11 and 12: of ac and requested the pilot, who
Page 13 and 14: and I forgot to off centre. Now I w
Page 15 and 16: airborne six minutes later as plann
Page 17 and 18: The time was 2100h and I had just f
Page 19 and 20: Continued from page 13 maintaining
Page 21 and 22: CROSSWORD CLUES (ACROSS) 1. Pilots
Page 23 and 24: search for the missing thing. We do
Page 25 and 26: human error aircrew and bird hits p
Page 27 and 28: I am not an external member of an a
Page 29 and 30: A MIG 21 aircraft was cleared for G
Page 31 and 32: There was a hushed silence in the b
Page 33 and 34: had guns which were in poor conditi
Page 35 and 36: 797614-F Cpl Shantanu Chandra Inst/
Page 37 and 38: On 02 Mar 12 , 766345 H JWO T Prata
Page 40: REPORT UNSAFE ACTS USE ONLINE TOOLS

November 2012 - Indian Airforce

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