Instrument approach procedures GSR 751 E provision & PANS OPS ops

A presentation of Instrument Approach Procedures and provision of GSR 751 E Provision for obstacle clearance

1. Instrument Approach Procedures
GSR 751 E Provision & PANS -OPS
Arvind Kumar Singh
CHQ,New Delhi

2. Instrument Approach to Land
(IAL) procedures
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Why are they required?

3. Clear sky and great visibility
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Shallow Fog

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Dense Fog/Cloud

6. Aseriesofpredeterminedmanoeuvres
Byreferencetoflightinstruments
Withspecifiedprotectionfromobstaclesfromtheinitial
approachfix,orwhereapplicable,fromthebeginningofa
definedarrivalroutetoapointfromwhichalandingcanbe
completedand
Thereafter,ifalandingisnotcompleted,toapositionatwhich
holdingoren-routeobstacleclearancecriteriaapply.
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IALProcedure

7. Role of PANS-OPS in NOC
Flightproceduresaredesignedfornormaloperationsaspertheprovisions
ofICAODOC8168Vol-II.
AsanystructureerectedaroundanairportmayadverselyimpacttheFlight
Procedures.
Regulatethepermissibleheightoftheproposedstructurewithrespectto
FlightProcedures.
AnyadverseimpactonFlightproceduresduetoanystructurewilladversely
impacttheaircraftoperations.
ToprotectFlightprocedures,permissibleheightofanstructuresneedstobe
regulatedfromPANS-OPScriteria.
Accordingly,NOCforheightissuedtoanystructureistheleastofAGA,CNS
andPANS-OPS.

8. MinimumSectorAltitude(MSA)
MinimumHoldingAltitude(MHA)
MinimumVectoringAltitude(MVA)
MinimumAltitudeofInitialandIntermediateSegments
OCA/H(Straight-in-andCircling)forallaircraftcategories
STARs/SIDsprocedurealtitude.
BasicILSSurface
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PANS-OPS Criteria(GSR751 E)

9. Segments of IAP
Instrument Approach Procedure segments to be
protected:
1.Arrival Route
2.Initial Approach Segment
3.Intermediate Approach Segment
4.Final Approach Segment
5.Missed Approach Segment
6.In addition, an area for Visual Circling is
considered
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10. 10
IAF
FAF
IF
MAPt
Intermediate
Approach
Segment
Runway
Segments of IAP

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Types of Instrument Approach
Procedures
1.Non Precision Approach-VOR/DME, NDB
2.Precision Approach-ILS
3. RNAV (GNSS)
LNAV,LNAV/VNAV,LPV& RNP AR

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Non-Precision Approach
•In India MDH400 Ft OR More
•Taking a fictitious obstacle of 45 M AGL
•DGCA CAR Section 8 (Aircraft Operations) Series C Part 1
(AWO)
•Visibility Requirement
MDH FALS IALS BALS NALS
400 1100 1400 1600 1800

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Precision Approach Categories
CATEGORY DH (ft) VIS (M) RVR( M)
I >=200 800 550
II >=100 - 350
III A 50-100 - 175
III B <50 - 50
III C NO - NO

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VOR/NDB Protection Area

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Basic ILS Surface Area

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Protection Area For RNAV (GNSS)

17. Approach Slope For Safe Landing
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18. PANS-OPS Criteria
MinimumSectorAltitude(MSA)–30NMaroundanav-aidor
significantpointoftheairport,providingatleast1000ftofMOC
overanyobstacle.
MinimumHoldingAltitude(MHA)–Atleast1000ftofMOCover
anyobstacleinthespecifiedarea.
InitialApproachAltitude-Atleast1000ftofMOCoverany
obstacleinthespecifiedarea.
IntermediateApproachAltitude-Atleast500ftofMOCoverany
obstacleinthespecifiedintermediateapproacharea.
ObstacleClearanceAltitude(OCAstraight–in)-Atleast300/250ft
ofMOCoveranyobstacleinthespecifiedfinalapproacharea.
ObstacleClearanceAltitude(OCACircling)-Atleast300/400ftof
MOCoveranyobstacleinthespecifiedcirclingapproacharea.

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Minimum Sector Altitute
MSA: 2300 Ft
Controlling Obstacle
2300-1000=1300 ft

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Visual Circling
OCA: 770 Ft
Controlling Obstacle
770-300=470 ft

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VOR Procedure
OCA: 670 Ft
Controlling Obstacle
670-250=420 ft

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ILS Procedure
OCA: 530 Ft
Controlling Obstacle
530-161=369 ft

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LNAV VNAV Procedure
OCA(LNAV): 670 Ft
Controlling Obstacle
670-250=420 ft
OCA(LNAV/VNAV): 590 Ft
Controlling Obstacle
590-161=429 ft

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LPV Procedure
OCA: 520 Ft
Controlling Obstacle
520-161=359 ft

25. CASE STUDIES
VOR-VOMMRWY 07
ILS-VOMMRWY 25
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Analysis Case
Study-1
OCA:810(770Ft)
Controlling
Obstacle
810-250=560Ft

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x=1.8NM, y=0.6NM
TE 700ft
Analysis Case Study-1

28. Analysis Case Study-1
X=1.8 NM
Y=0.6 NM
AGA=45M+THRELEV(12 M)=57M
PANS OPS=170M(560 Ft)
REQUESTED TE=213M(700 ft)
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Analysis Case
Study-1
OCA: 330(278)
Controlling Obstacle
330-161=169 ft

30. Basic ILS
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Analysis Case Study-2

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x=3 NM, y=0.6NM
TE 160M
Analysis Case Study-2

32. Analysis Case Study-2
X=3 NM
Y=0.6 NM
AGA=45M+THRELEV(12 M)=57M
PANS OPS=154M
[{(0.00355X3+0.143X.6)X1852-36.66}+12(THREle.)]
REQUESTED TE=160M
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