POST OPERATIONS ANALYSIS REPORT

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POST OPERATIONS ANALYSIS REPORT

October, 2020

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List of Figures

Figure 1: Daily ATMs at four major airports - Oct'20 ...5

Figure 2: Percentage Traffic Variation (YoY) ...6

Figure 3: Month wise ATMs at four major airports ...7

Figure 4: Traffic Growth - Post Covid ...8

Figure 5: Busiest Airports in India - Oct’20 ...8

Figure 6: Flight Movements – Airline wise ...9

Figure 7: ATFM Measures - Oct'20 ... 10

Figure 8: Affected Flight Statistics –Oct’20 ... 11

Figure 9: Overall Compliance –Oct’20 ... 12

Figure 10: ATFM Compliance – Month wise ... 13

Figure 11: Airlines Overall Compliance - Oct'20 ... 15

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A. Executive Summary

Government of India has now allowed a winter schedule deploying 60% of the originally approved summer schedule for domestic flights whereas the scheduled international flight movements remain suspended till 1829

UTC of 30 Novemebr’20. (NOTAM G0915 replacing NOTAM G0804/20).

Given the gradual and steady revival in domestic air travel, the aviation ministry had recently said that it may soon hike the slots from 60% to 75%. But as of now the 60% cap could remain till February 24, unless there is any change depending on the circumstances.

Even though India has extended its embargo on international flights till 30th_{Novemeber’20}_{, special international}

passenger flights have been operating in India under the Vande Bharat Mission since May and under bilateral air bubble arrangements formed between India and other countries since July. Air bubbles or travel corridors are systems established between two countries that perceive each other to be safe and allow carriers of both the countries to fly passengers either way without any restrictions. Government is also implementing “air bubble”

agreements with countries in order to mitigate a host of quarantine and Covid-19 testing rules at arrival destinations.

“Air bubbles” or “Air bridges” have become the only medium through which commercial international travel has

resumed since mid-July. India now has air bubble arrangements with 15 countries including the US, UK, Germany, France, Afghanistan, Bahrain, Bhutan, Kenya, Canada, Iraq, Japan, Maldives, Nigeria, Qatar, and UAE.

ATFM measures were applied six times for Bengaluru Airport in the month of October’20 due to scheduled Runway

maintenance and inherent scheduling issues. The average CTOT compliance rate was observed to be 73% and 84% of arrivals received an air delay of 10 minutes or less during the period when ATFM measures were in force.

B. Traffic Analysis

Domestic flight services have resumed in India on May 25, after about two months of suspension due to the coronavirus disease (COVID-19)-necessitated nationwide lockdown.

The total number of ATMs at Indian Airports in Oct’20 (during Covid pandemic) w.r.t. Dec’19(Pre -Covid) is 51.3%. The total Air traffic movement including Passenger and Combination other flights i.e. All-Cargo flights, International scheduled , International non-scheduled , Domestic scheduled,Domestic non-scheduled ,Air taxi & commercial business flights and all other aircraft movements at four major Indian Airports namely Delhi, Mumbai, Bengaluru and Hyderabad is plotted for each day of the month of Oct’20.

The data used is the movement data received from Delhi, Mumbai, Bengaluru and Hyderabad Airport. Airline movement is also plotted for the month for major Scheduled Operators.

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I. Daily ATMs at four major airports

Figure 1: Daily ATMs at four major airports - Oct'20

0 100 200 300 400 500 600 700 800 900

A

ir

Tr

aff

ic

M

o

ve

m

e

n

ts

Daily ATMs - October 2020

Mumbai Delhi Bengaluru Hyderabad

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II. Comparison of total ATMs (YoY) and Month wise

The graph below depicts the change in total ATMs in the month of Oct’20 in comparison to the total ATMs in Oct’19 for four major Airports in India. The traffic handled at Mumbai in Oct’20 is 57.6% less than the traffic handled in Oct’19 whereas the traffic handled in Delhi, Bengaluru and Hyderabad are 43.7% ,42.2% and 44.8% less than the traffic handled in Oct’19 respectively.

Figure 2: Percentage Traffic Variation (YoY)

Total ATMs (YoY) for four major airports

Airports\Year Oct’20 Oct’19

Mumbai 11893 ₂₈₀₆₄

Delhi 22758 ₄₀₄₈₇

Bengaluru 11683 ₂₀₂₁₈

Hyderabad 8947 16225

-57.6%

-43.7% -42.2% _-44.8%

-70% -60% -50% -40% -30% -20% -10% 0%

Mumbai Delhi Bengaluru Hyderabad

%

C

h

an

ge

%Traffic Variations : Oct'20 vs. Oct'19

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The graph below presents the month wise air traffic movement in the year 2020, at four major Airports.

Figure 3: Month wise ATMs at four major airports

42261

27873

21115

16922

41021

24457

19752

15474

28277

17983

14338

11354

1449 ₉₉₂

502 251

4092

1860 ₁₅₆₇

851

12498

4395 5017

3606

14160

5586 5820 ₅₄₀₃

16204

6100 7564 6392

19408

9130 9639

8041

22758

11893 11683

8947

Delhi Mumbai Bengaluru Hyderabad

A

TM

s

Total ATMs (Month wise - 2020)

Jan-20 Feb-20 Mar-20 Apr-20 May-20 Jun-20 Jul-20 Aug-20 Sep-20 Oct-20 Data Source: AOCC & ATC Automation

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III. Air-Traffic Growth (Post COVID Lockdown period)

The graph below plots the percentage change per month in Air traffic (domestic and international) post Covid Lockdown and resumption of flight operations from May’20. The Indian aviation industry witnessed continued recovery in domestic passenger traffic in October, with a sequential growth over September by 23%.

Figure 4: Traffic Growth - Post Covid

IV. Flight Operations

–

Airport wise

Figure 5: Busiest Airports in India - Oct’20

22758 11893 11683 8947 ₇₄₆₄ 6174 4315 ₂₆₀₁ 2542 2508 0 5000 10000 15000 20000 25000 N o .O f Fl ig h ts

Top 10 Busiest Airports - Oct'20

Data Source: AOCC, ATC Automation & SKYFLOW

7371 8459 8680 9633 10507

27467 30047 34260

46096 56863 0 10000 20000 30000 40000 50000 60000 70000 80000 90000 100000

Jun'20 Jul'20 Aug'20 Sep'20 Oct'20 Nov'20 Dec'20 Jan'20

N o .O f Fl ig h ts

Traffic Growth Post-COVID

International Domestic 9% 14% 3% 14% 35% 11% 23% 9%

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V. Flight Operations

–

Airline wise (Post COVID lockdown period)

Figure 6: Flight Movements – Airline wise

11163

5028 4980

788 1225 1369

14294

5307 5382

965 941 1313

17010

5536 5722

1118 1201 1698

22462

7176 ₆₈₉₉

2415 2305 2202

26359

8652 8503

3395 ₂₈₉₅ 3274

0 5000 10000 15000 20000 25000 30000

Indigo Spicejet Air India Go Air Vistara Air Asia

N

o

.O

f Fl

ig

h

ts

Airline

Flight Movements

June July August September October

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C. ATFM Post Operations

–

CDM Analysis

I. Introduction

Analysis Period

1st_–₃₁st_Octob_er’20

Back Ground During the above mentioned period, ATFM measures were applied six(6) times for Bengaluru Airport due to the following reasons as illustrated in the bar chart below:–

Figure 7: ATFM Measures - Oct'20

3 3

0 1 2 3 4 5 6 7

Bengaluru

N

o

. o

f A

TFM

M

e

asu

re

s Ap

p

lie

d

ATFM MEASURES - OCT'20

Inherent Scheduling Issue Scheduled Runway Closure

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II. ATFM Measures Overview

Bengaluru Airport

Number of ATFM measures applied 6

Average ATFM Ground delay due to measures 13 min Maximum ATFM Ground delay due to measures 42 min

% Compliance 73

Note: *𝑨𝒗𝒆𝒓𝒂𝒈𝒆 𝑨𝑻𝑭𝑴 𝑫𝒆𝒍𝒂𝒚 = 𝑻𝒐𝒕𝒂𝒍 𝑨𝑻𝑭𝑴 𝑫𝒆𝒍𝒂𝒚 𝑻𝒐𝒕𝒂𝒍 𝑫𝒐𝒎𝒆𝒔𝒕𝒊𝒄 𝑨𝒓𝒓𝒊𝒗𝒂𝒍𝒔

Total affected flights in scenario (Domestic Arrivals) 145

Total Domestic Arrivals with zero ATFM delay 23

Total Domestic Arrivals with ATFM delay 122

Figure 8: Affected Flight Statistics – Oct’20 122, 84% 23, 16%

Affected Flight Statistics

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III. Overall Compliance

Total Arrivals 156

Domestic arrivals 145

Flights with complete data (ATOT) 142

Flights with incomplete data 3

Flights Not Operated 0

Compliant* 103

Non-Compliant 39

Total No. of Revised CTOTs issued = 2 (Compliance calculation for flights which were issued revised CTOT is w.r.t. new CTOT issued)

Figure 9: Overall Compliance – Oct’20

NOTE: Flights with required data (i.e. ATOT) are only considered for compliance measurement

103, 73%

39, 27%

Overall Compliance

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Figure 10: ATFM Compliance – Month wise

Inference

1. Out of the total arrivals captured for the constrained Airports during the CDM scenario , 93% of flights i.e. Domestic arrivals, are participating.

2. Out of these Domestic Arrivals, 84% of arrivals are assigned ATFM ground delay & 16% of flights are without any ATFM ground delay.

3. Out of the total arrivals captured to the constrained Airport during the ATFM scenario, 78% of flights are assigned ATFM Ground Delay.

385 649 410 35 103 234 368 246 17 39

62 64 ₆₂ 67

73 0 100 200 300 400 500 600 700 0 10 20 30 40 50 60 70 80 N o . o f Fl ig h ts A d h e re n ce R ate ( % ) Month

ATFM Departure Slot Adherence - Month Wise (2020)

Flights within STW Flights outside STW Adherence rate

No ATFM

Measures

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IV. CTOT Compliance rate

–

Airport wise

MUMBAI FMP (72%)*

Compliant Non Compliant %Compliant

Ahmedabad 2 2 50

Mumbai 4 2 67

Bhopal 3 1 75

Pune 2 0 100

Surat 4 0 100

KOLKATA FMP (73%)*

Bhubaneshwar 5 0 100

Guwahati 4 2 67

Kolkata 13 2 87

Allahabad 1 3 25

Varanasi 4 2 67

DELHI FMP (70%)*

Delhi 10 2 83

Amritsar 0 2 0

Chandigarh 1 0 100

Jaipur 1 1 50

Lucknow 4 1 80

CHENNAI FMP (74%)*

Chennai 1 0 100

Cochin 4 1 80

Hyderabad 14 2 87

Belgaum 2 2 50

Madurai 3 0 100

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V. CTOT Compliance rate

–

Airline wise

Figure 11: Airlines Overall Compliance - Oct'20

Inference

1. Out of the total domestic arrivals with complete data in the CDM scenario, 73% arrivals are compliant. 2. Chennai region has the highest compliance rate of 74% whereas Delhi region has the lowest compliance

rate of 70%.

3. Go Air, Air Asia, Spicejet and Vistara have a compliance rate above the average recorded 73% compliance.

16 82 4 16 16 5 11 55 3 13 14 5

69 ₆₇ 75 81

88 100 0 10 20 30 40 50 60 70 80 90 100

Air India Indigo Go Air Air Asia Spicejet Vistara

0 10 20 30 40 50 60 70 80 90 % C o m p lian ce N o . o f Fl ig h ts

Overall Compliance Chart of Airline Operators - Oct'20

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VI. Air Delay during the CDM Scenario period

Average Air Delay to domestic arrivals* within the CDM Scenario period for Bengaluru is 4 minutes

*Note: Only calculated for domestic arrivals with both ATOT and ALDT information

Distribution of difference between AET & filed EET

AET-EET min

(time band) <= -10 -9 to -6 -5 to -1 0 to 5 6 to 10 11 to 15 16 to 20 21 to 25 26 to 30 >30

Bengaluru

Flt. Count 9 9 28 50 24 14 7 0 0 0

% flight 6 6 20 35 17 10 6 0 0 0

Figure 12: Cumulative Air Delay during CDM period

Inference

1. 84% of arriving flights to Bengaluru had an Air delay of equal to or less than 10 minutes during the CDM period.

6 12

32

67

84

94 100

0 10 20 30 40 50 60 70 80 90 100

< = -10 < = -6 < = -1 < = 5 < = 10 < = 15 < = 20 < = 25 < = 30 > 30

Per

ce

n

tage

Air Delay in Minutes

Cumulative Air Delay

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D. Glossary

ATFM Parameters

Definition

Affected Flight statistics

An insight of participating traffic in the scenario i.e. ratio of the domestic arrivals to the constrained airport affected by ATFM measures (assigned delay by the Ground Delay Program) to the domestic arrivals not affected by ATFM measures (not assigned any delay) within the CDM scenario.

ATFM Ground delay ATFM ground delay defined as CTOT-ETOT (Calculated take off time – Estimated take off time)

Average ATFM delay 𝑻𝒐𝒕𝒂𝒍 𝒎𝒐𝒏𝒕𝒉𝒍𝒚 𝑨𝑻𝑭𝑴 𝒅𝒆𝒍𝒂𝒚 (𝒊𝒏 𝒎𝒊𝒏𝒖𝒕𝒆𝒔)

𝑻𝒐𝒕𝒂𝒍 𝑫𝒐𝒎𝒆𝒔𝒕𝒊𝒄 𝑨𝒓𝒓𝒊𝒗𝒂𝒍𝒔

Maximum ATFM delay Maximum ATFM delay (in minutes) assigned in the month

Overall compliance rate

Defined as monthly ATFM departure slot adherence rate of regulated flights. Flights having ATOT within the ATFM Slot Tolerance Window (STW) of minus 5 to plus 10 minutes of CTOTs, are considered as compliant flights

CTOT Compliance rate of

Airline operators An overview of CTOT compliance rate of various Airline operators

CTOT Compliance rate of Airports within different

Regions

An overview of CTOT compliance rate of Airports within 4 FIRs

Air delay statistics

Air delay defined as difference between AET & EET, where AET(actual elapsed time) can be obtained from (ALDT-ATOT) and estimated elapsed time(EET)can be obtained from FPL/RPL or (CLDT-CTOT). Therefore, Air delay = AET-EET Average Air Delay is calculated as:

𝑨𝒗𝒆𝒓𝒂𝒈𝒆 𝑨𝒊𝒓 𝑫𝒆𝒍𝒂𝒚

=𝑻𝒐𝒕𝒂𝒍 𝑨𝒊𝒓 𝑫𝒆𝒍𝒂𝒚 𝒕𝒐 𝒅𝒐𝒎𝒆𝒔𝒕𝒊𝒄 𝒂𝒓𝒓𝒊𝒗𝒂𝒍𝒔 (𝒘𝒊𝒕𝒉 𝒗𝒂𝒍𝒖𝒆𝒔 𝒈𝒓𝒆𝒂𝒕𝒆𝒓 𝒕𝒉𝒂𝒏 𝒛𝒆𝒓𝒐)

𝑻𝒐𝒕𝒂𝒍 𝑫𝒐𝒎𝒆𝒔𝒕𝒊𝒄 𝑨𝒓𝒓𝒊𝒗𝒂𝒍𝒔

CLDT: Calculated Landing Time CTOT: Calculated Take off Time ALDT: Actual Landing Time ATOT: Actual Take off Time

POST OPERATIONS ANALYSIS REPORT