NPA OPS 41 Workshop

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Aerodrome Operating MinimaHead-Up
DisplaysEnhanced Vision Systems

• NPA-OPS 41

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Presenters

• Tim Price (AEA / British Airways)
• Secretary, AWOSG
• Theo van de Ven (AEA / KLM)
• Member AWOSG and ICAO OCP

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Background

• OST endorsed NPA OPS 41 in May this year
• Including
• Rule Material
• New ACJs
• Explanatory Note
• RIA
• So what has happened to it?
• A feeling in the AWOSG that some final editorial
  work required before public consultation
  (including compliance with JAR 11!)
• More harmonisation work with FAA and ICAO
• Workshop on November 10

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Contents of Todays Presentation

• Rationale for NPA 41
• Contents of the NPA
• Stabilised Instrument Approach
• Continuous Descent Final Approach
• Harmonisation work
• Workshop
• Detailed Rule ACJ changes since May
• Regulatory Impact Assessment
• Conclusion

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NPA-OPS 41

• The proposal contains draft texts for
• Aerodrome Operating Minima (1.430)
• Comments received post NPA 20
• JAA / FAA AWOHWG work (ongoing)
• Requirements for Cat I, II and III Operations
  (1.440 and Appendix)
• JAA / FAA AWOHWG work
• Introduction of HUD HUDLS
• Introduction of EVS
• Training and qualification requirements for all
  of the above (1.450)

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Stabilised Instrument Approach - Background

• CFIT ALARP programmes encouraged authorities to
  prescribe stabilised instrument approaches SAp
• SAp an approach which is flown in a controlled
  and appropriate manner in terms of configuration,
  energy and control of the flight path, from a
  pre-determined point or altitude/height, without
  any segment of level flight at MDA(H)
• Considered to be much safer than a Non-Precision
  Approach (NPA) flown as dive drive

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Stabilised Instrument Approach and CDFA

• NPA 20 / 41 defines a new variant of the
  Stabilised Approach the Continuous Descent Final
  Approach (CDFA)
• An approach with a predetermined approach slope
  which enables a continuous descent to DA(H)
• CDFA includes precision approaches,
  non-precision approaches and approaches with
  vertical guidance (APV)

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CDFA - Benefits

• The CDFA concept aims to increase the safety of
  Non-Precision Approaches by eliminating level
  flight at MDA, ie close to the ground
• Pilot workload is reduced as a/c attitude, power
  and energy are stabilised
• One decision point for the pilot
• The intention is that all approaches should be
  flown as CDFA (if possible)

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CDFA v Traditional NPA
Continuous descent from FAF no level-flight
segment at MDH
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Harmonisation Work

• Meeting of JAA / FAA AWO Harmonisation Working
  Group in September
• FAA members participated in AWOSG meeting
  November 1-3
• FAA will soon publish revised Ch 3 of TERPS
  (harmonised AOM) for consultation
• Some changes to ICAO PANS Ops incorporated

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NPA 41 Workshop 10 Nov 05

• Requirement from OST in May to introduce the NPA
  41 material to interested parties
• Attended by 25 representatives
• Mostly from Europe, but also Australia and
  Secretary of ICAO OPSP
• Subjects covered included
• Purpose, Background and Harmonisation Work
• CDFA and SAp
• New Technology (HUD EVS)
• New Minima and Minima Calculation
• RNAV Issues
• Charting Issues
• Possible Future Developments
• Comments?

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Detailed Rule, Appendix and ACJ ChangesSince
OST 05/2
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Most Important!

• There have been no changes to the philosophy of
  the NPA since May
• Only one detailed Rule change is proposed
  (explanation later...)
• Most of the changes are editorial, designed to
  explain and simplify
• We are not proposing anything vastly different
  since your previous endorsement!
• But... because changes have been made, the
  material has been brought back

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Rule Changes

• (d)(1) (2) CDFA and SAp are separated more
  clearly
• (d)(2) clarifies that CDFA only applies to
  Non-precision approaches
• (f) deleted as a consequence of (d)(2)

• 1.430 Aerodrome Operating Minima General

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Rule Changes

• 1.435 Terminology
• (a)(10) Definition of SAp aligned with ICAO PANS
  Ops Vol 1
• (a)(15) Definition of Converted Meteorological
  Visibility (CMV) introduced
• (a)(16) Definition of Lower Than Standard
  Category I included
• (a)(17) Definition of Other Than Standard
  Category II included
• ( NB these definitions previously endorsed by
  OST)

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Rule Changes

• General Comment
• Most references to RVR changed to include CMV
  (Rule Appendix)
• Many references to DA(H) changed to DH because
  they refer to height above the ground

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Appendix 1 to 1.430

• (b) Cat I, APV and NPA referred to as
  operations
• (b)(3) RNAV/Baro VNAV removed from definition of
  APV
• (c)(1) lowest usable added
• (c)(1)(i) (ii) CDFAs replaced with
  instrument approaches
• (c)(2) New para
• (d)(1) Added but not greater than the maximum
  values shown in table 6 where applicable for
  clarity

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Appendix 1 to 1.430

• (d)(5) Reworded and simplified
• Special requirements for DH 200 210 ft deleted
• ILS requirements simplified
• Guidance required down to DH only
• (d)(8) New para based on text agreed at OST 05/2,
  proposed by ERA
• Table 6 Note added at the bottom for clarity
• (d)(10) Simplified in similar way to (d)(5)
• (e)(2) (f)(1(iii) Max offset angle limited to 3
  degrees instead of 5 degrees
• Tables 6a and 6b combined note moved to become
  (e)(5)(1)

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Appendix 1 to 1.430

• Tables 7b and 7c combined
• (h)(1)(i)(B) (C) and (h)(3) Visual reference
  requirements changed to harmonise completely with
  FAA
• (h)(2) Added APV
• (j) Only real Rule change. Reinstated the link
  between minima for circling and preceding
  instrument approach but only for offset
  approaches, not circling to an opposite runway
• (l) Slight change of wording for clarity

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ACJs

• 1.430 CDFA
• Edited extensively to improve English
• Discussion about amount of information your
  views sought
• Appendix 1 (New) to 1.430 (d) AOM
• Considerably simplified

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ACJs

• Appendix 1 (New) to 1.430 (f) Circling
• Should be (j) not (f) sorry!
• Endorsed by OST, believed to be in 2002, cold
  item
• To replace current IEM to Appendix 1 to JAR-OPS
  1.430, paragraph (f)
• Not contentious
• Requested from the AWOSG
• A good opportunity to include it

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Regulatory Impact Assessment
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RIA

• Scope
• Discussed already
• Relevant ICAO / JAA decisions
• SAp / CDFA
• HUD (JAA TGL)
• HUD minima conflict with Annex 14 (RVR not DH)
• NPA may well be used by ICAO OPSP
• Operations lt550m RVR definition (Cat I or Cat
  II?)

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RIA

• Objectives
• Enhance safety especially CDFA
• HUDLS / autoland
• EVS
• Who will be affected?
• All JAR-OPS operators, and probably most GA
• Training
• New operational procedures

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RIA

• Options
• Do nothing
• Introduce Rule, but no reduction in RVR
• Introduce Rule and reduce required RVR
• Mandate CDFA / SAp, but no change in AOM
• Mandate CDFA / SAp and change in AOM

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RIA

• Equity and Fairness
• Equal and fair procedures in Europe and USA
• Regulation for new technologies
• Lower minima depending on installed equipment
• Europes need to catch up with FAA

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RIA

• Impacts identified
• Safety
• Economic
• Harmonisation
• Environmental
• Social (nil)
• Other Aviation Requirements

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RIA

• Consultation
• Industry
• Flight-crew
• FAA
• Comments Response Document
• Summary Final Assessment

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Conclusion

• No major changes have been made since OST 05/2
• Many of the items have been endorsed separately
  by the OST at various times in the past
• Circling ACJ
• HUD material
• NPA 20
• NPA 41 (first draft)
• This major reworking of Sub Part E is overdue and
  should be well received by the aviation community

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Questions??

• Theo van de Ven (theo-van-de.ven_at_klm.com)
• Tim Price (tim.price_at_britishairways.com)

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