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Development and Evaluation of an RNP AR APCH approach procedure under tight airspace constraints

Unkelbach, Richard and Dautermann, Thomas (2022) Development and Evaluation of an RNP AR APCH approach procedure under tight airspace constraints. CEAS Aeronautical Journal, 13, pp. 613-625. Springer. doi: 10.1007/s13272-022-00576-4. ISSN 1869-5590.

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Official URL: https://link.springer.com/article/10.1007/s13272-022-00576-4


Required navigation performance authorization required (RNP AR) approach (APCH) procedures are a special form of approaches with vertical guidance (APVs) where stricter navigation system requirements in terms of accuracy, integrity and functionalities allow smaller obstacle clearance areas and the use of curved legs in all approach segments. That leads to very flexible approach design possibilities compared to other instrument approach procedures. This paper guides through the development and initial evaluation of an RNP AR approach on runway 15L at Isa Air Base in Bahrain. The establishment of instrument approaches on this runway has been complicated so far because the final approach would have led straight through the controlled traffic region (CTR) of an adjacent air base. We show that entering the CTR, which ends less than 3.3 NM before the runway threshold, can be avoided with an RNP AR approach by employing a curved leg in the final approach segment and the highest possible navigation accuracy of RNP 0.1—two unique features of RNP AR APCH. We then fly and test the developed procedure in an Airbus A320 full-flight simulator under the wind and weather conditions considered by the procedure design rules. The results show that the actual navigation and flight technical performance met the required one under all conditions without the bank angle and effective glide path limits being exceeded. An initial flight test with a Boeing B737-800 showed that the approach can also be flown with sufficient accuracy in practice.

Item URL in elib:https://elib.dlr.de/144149/
Document Type:Article
Title:Development and Evaluation of an RNP AR APCH approach procedure under tight airspace constraints
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Unkelbach, RichardUNSPECIFIEDhttps://orcid.org/0000-0001-9216-4958UNSPECIFIED
Dautermann, ThomasUNSPECIFIEDhttps://orcid.org/0000-0001-9469-5613UNSPECIFIED
Date:7 May 2022
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 613-625
Keywords:RNP AR, RNP, Procedure Design
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Air Transportation and Impact
DLR - Research area:Aeronautics
DLR - Program:L AI - Air Transportation and Impact
DLR - Research theme (Project):L - Integrated Flight Guidance
Location: Braunschweig
Institutes and Institutions:Institute of Flight Guidance > Pilot Assistance
Institute of Flight Guidance
Deposited By: Dautermann, Dr. Thomas
Deposited On:24 Nov 2022 09:31
Last Modified:27 Jun 2023 08:35

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