1 Marc Troller, TNS, skyguide

RF leg test flights

Super King Air

Marc Troller CNS Expert Group, skyguide

2 Marc Troller, TNS, skyguide

Scope

› CHIPS: Swiss-wide imple-

mentation project of SESAR-

oriented objectives

› Ability to test avdvanced PBN procedures and functionalities

› Upgrade of Super King Air of the Swiss Airforce:

- ProLine 21 WAAS(EGNOS)/LPV

- RF leg functionality

- ADS-B out transponder according DO260A

- dual mini quick access recorder

› Verify functionality such as RF leg

3 Marc Troller, TNS, skyguide

Map ICAO – compliant procedure

4 Marc Troller, TNS, skyguide

Map Procedure with 3 RF legs

5 Marc Troller, TNS, skyguide

Flight Summary (1)

Flight Time UTC Waypoints FAS Intercept

1/1 10:10:50 MD703-MD702-MD701-MD700-VIBAX-RW29-MD506-MD507 RNAV

1/2 10:29:52 MD703-MD702-MD701-MD700-VIBAX-RW29-MD506-MD507 RNAV

1/3 10:42:59 MD752-MD751-MD750-VIBAX RNAV

1/4 10:49:34 MD701-MD700-VIBAX ILS

1/5 10:54:13 MD751-MD750-VIBAX-RW29 ILS

6 Marc Troller, TNS, skyguide

Flight Summary (2)

Flight Time UTC Waypoints FAS Intercept

2/1 13:49:51 MD703-MD702-MD701-MD700-VIBAX-RW29-MD506-MD507 RNAV

2/2 14:03:27 MD752-MD751-MD750-VIBAX ILS

2/3 14:09:30 MD752-MD751-MD750-VIBAX RNAV

2/4 14:19:02 MD703-MD702-MD701-MD700-VIBAX RNAV

2/5 14:34:18 MD703-MD702-MD701-MD700-VIBAX-RW29 ILS

2/6 14:46:12 MD703-MD702-MD701-MD700-VIBAX RNAV

2/7 14:51:17 MD702-MD701-MD700-VIBAX-RW29-MD506-MD507 RNAV

2/8 MD751

2/9 MD751

2/10 15:23:45 MD703-MD702-MD701-MD700-VIBAX-RW29 RNAV

7 Marc Troller, TNS, skyguide

True Flight Path Determination

› Raw GNSS logging withJAVAD Sigma GNSS receiver

› Use of GNSS data of permanent GNSS network of

Switzerland (AGNES)

› Determination of GNSS phase solution with GrafNav software

› Accuracy: approximately 10 cm

› Trajectory seen as true flight path

› Difference true flight path and desired flight path = total system error

8 Marc Troller, TNS, skyguide

Navigation System Flight Path Determination

› Super King Air equipped with ADS-B out acc.

DO 260A standard

› Kinetic SBS-3 used to record ADS-B raw data

› Software developed to extract relevant positioning and performance

information

› NIC (navigation integrity category) always 10 (one exception)

› NAC (navigation accuracy category) always 10 (one exception)

› Difference navigation system flight path and desired flight path =

flight technical error

9 Marc Troller, TNS, skyguide

› During Flight 2/3, GPS was switched off

› Reversion to DME/DME

Navigation System Flight Path Determination

Flight 2/3

0

2

4

6

8

10

12

7.09.011.013.015.017.019.0

Distance to RW29 [NM]

NA

C/N

IC v

alu

e

WAYPOINTS

NAC

NIC

10 Marc Troller, TNS, skyguide

Analysis ICAO-compliant procedure

11 Marc Troller, TNS, skyguide

Analysis Flight 1/3

Flight 1/3

1230000

1235000

1240000

1245000

1250000

1255000

1260000

2690000 2695000 2700000 2705000 2710000 2715000 2720000

Swiss Coordinates Y [m]

Sw

iss C

oo

rdin

ate

s X

[m

]WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

RW29

MD751

MD752

MD750

VIBAX

MD760

12 Marc Troller, TNS, skyguide

Analysis Flight 1/3

Flight 1/3

-0.02

-0.02

-0.01

-0.01

0.00

0.01

0.01

0.02

0.02

6.08.010.012.014.016.018.020.0

Distance to RW29 [NM]

La

tera

l d

ev

iati

on

[N

M]

WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

MD752 MD751 MD750

VIBAX

13 Marc Troller, TNS, skyguide

Analysis Flight 2/2

Flight 2/2

-0.20

-0.15

-0.10

-0.05

0.00

0.05

0.10

8.010.012.014.016.018.020.0

Distance to RW29 [NM]

La

tera

l d

ev

iati

on

[N

M]

WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

MD752 MD751 MD750

VIBAX

14 Marc Troller, TNS, skyguide

Analysis Flight 2/3 (DME/DME)

Flight 2/3

-0.20

-0.15

-0.10

-0.05

0.00

0.05

0.10

7.09.011.013.015.017.019.0

Distance to RW29 [NM]

La

tera

l d

ev

iati

on

[N

M]

WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

MD752 MD751 MD750 VIBAX

15 Marc Troller, TNS, skyguide

Analysis Procedure with 3 RF legs

16 Marc Troller, TNS, skyguide

Analysis Flight 1/1

Flight 1/1

1230000

1235000

1240000

1245000

1250000

1255000

1260000

2685000 2690000 2695000 2700000 2705000 2710000 2715000

Swiss Coordinates Y [m]

Sw

iss

Co

ord

ina

tes

X [

m]

WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

VIBAX

MD703

MD702

MD701

MD700

MD712

MD710

MD711

RW29 MD506

MD507

MD760

17 Marc Troller, TNS, skyguide

Analysis Flight 1/1

Flight 1/1

-0.30

-0.25

-0.20

-0.15

-0.10

-0.05

0.00

0.05

0.10

-10.0-5.00.05.010.015.020.0

Distance to RW29 [NM]

La

tera

l d

ev

iati

on

[N

M]

WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

MD700

MD703 MD702

MD701 VIBAX

RW29 MD506

MD507

Flight 1/1

-0.30

-0.25

-0.20

-0.15

-0.10

-0.05

0.00

0.05

0.10

-10.0-5.00.05.010.015.020.0

Distance to RW29 [NM]

La

tera

l d

ev

iati

on

[N

M]

WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

MD700

MD703 MD702

MD701 VIBAX

RW29 MD506

MD507

18 Marc Troller, TNS, skyguide

Analysis Flight 1/2

Flight 1/2

-0.30

-0.25

-0.20

-0.15

-0.10

-0.05

0.00

0.05

-10.0-5.00.05.010.015.020.0

Distance to RW29 [NM]

La

tera

l d

ev

iati

on

[N

M]

WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

MD703

MD702

MD701 VIBAX

RW29

MD506 MD507 MD700

19 Marc Troller, TNS, skyguide

Analysis Flight 2/1 (auto-pilot disengaged)

Flight 2/1

-0.40

-0.35

-0.30

-0.25

-0.20

-0.15

-0.10

-0.05

0.00

0.05

0.10

-10.0-5.00.05.010.015.020.0

Distance to RW29 [NM]

La

tera

l d

ev

iati

on

[N

M]

WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

MD700

MD703

MD702

MD701 VIBAX

RW29

MD506 MD507

20 Marc Troller, TNS, skyguide

Analysis Flight 2/4 (DME/DME)

Flight 2/4

-0.40

-0.30

-0.20

-0.10

0.00

0.10

0.20

0.30

0.40

0.50

5.07.09.011.013.015.017.019.0

Distance to RW29 [NM]

La

tera

l d

ev

iati

on

[N

M]

WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

MD703 MD702 MD701 VIBAX MD700

21 Marc Troller, TNS, skyguide

Analysis Flight 2/5 (DR)

Flight 2/5

-0.80

-0.60

-0.40

-0.20

0.00

0.20

0.40

0.60

0.80

-5.00.05.010.015.020.0

Distance to RW29 [NM]

La

tera

l d

ev

iati

on

[N

M]

WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

MD703

MD702

MD701 VIBAX MD700 RW29

22 Marc Troller, TNS, skyguide

Analysis Flight 2/6 (PLAN mode)

Flight 2/6

-0.50

-0.40

-0.30

-0.20

-0.10

0.00

0.10

0.20

0.30

0.40

0.50

5.07.09.011.013.015.017.019.0

Distance to RW29 [NM]

La

tera

l d

ev

iati

on

[N

M]

WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

MD703 MD702 MD701 VIBAX MD700

23 Marc Troller, TNS, skyguide

Analysis Flight 2/7 (CDI mode)

Flight 2/7

-0.20

-0.15

-0.10

-0.05

0.00

0.05

0.10

0.15

0.20

-10.0-5.00.05.010.015.020.0

Distance to RW29 [NM]

La

tera

l d

ev

iati

on

[N

M]

WAYPOINTS

True Flight Path

Nav. Sys. Flight Path

MD700

MD702 MD701

VIBAX

RW29

MD506

MD507

24 Marc Troller, TNS, skyguide

Findings

ICAO-compliant procedure (1 RF leg)

› No issues detected

› Lateral deviation < 0.10 NM

› Successful even using DME/DME (deselecting GPS)

Procedure with 3 RF legs

› Large lateral deviation of up to 0.3 NM in the second leg (change of

right turn to left turn)

› RF leg termination at FAP/FAF was successful

› Deviation of up to 0.6 NM in case of DR (approach did still work!)

› Small deviation in case of manual flight (PLAN or CDI mode)