1. RNP 10 Operations Routes in Indian FIRs are as follows
N571, P762, L301, L507, L509, L510, L759, M300, M770, N563, N877, N895, P570, P574, P628 and P646. |
2. RNP 10 NAVIGATION REQUIREMENT |
2.1 ATC will apply 50NM longitudinal separation minima between suitably equipped aircraft which are approved for RNP10 operations on those segments of the routes which fall within the Chennai, Mumbai FIRs.
a) N571-EASTBOUND-(between PARAR and IDASO) AND WESTBOUND-(between IGOGU and PARAR)
b) P762 - (between DUGOS and LULDA)
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c) L301* - (between RINDA and RASKI)
d) L507 - (between TEBOV and CEA)
e) L509* - (between GAYA and ASARI)
f) L510* - (between EMRAN and IBANI)
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g) L759 - (between MIPAK and DPN)
h) M300 - (between ATETA and LOTAV)
i) M770* - (between MEPEL and JJS)
j) N563* - (between MEMAK and REXOD)
k) N877 - (between LAGOG and PRA)
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l) N895 - (between SAGOD and PARTY)
m) P570 - (between BASUR and KITAL)
n) P574 - (between NOPEK and TOTOX)
o) P628* - (between IGREX and VIKIT) and
p) P646* - (between IBITA and BBN)
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* - Time restrictions and special procedures applicable to these routes are mentioned in eAIP ENR 3.1 L, M, N & P and NOTAMs issued in this regard. |
2.2 Pilots are to advise ATC of any deterioration or failure of navigation system below the navigation requirements for RNP10. ATC shall then provide alternate separation and/or alternative routing.
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2.3 Pilots of aircraft meeting RNP10 navigation requirements are to indicate ‘R’ in Item 10 of the ICAO Flight Plan. |
3. LONGITUDINAL SEPARATION MINIMA |
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3.1 10 minutes or 80 NM RNAV distance based separation based on Mach NumberTechnique (MNT) between RNP 10 equipped aircraft shall be applied between aircraft |
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3.2 50 NM longitudinal separation will be applied between RNP 10 approved aircraft which either LOGON to CPDLC or are within VHF range i.e., direct controller pilot communication exists (DCPC). |
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3.3 Differential Mach Number Technique (MNT) separation minima shall not be applied for RNAV distance based 80/50 NM. |
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3.4 The mixed mode of 80 NM and 50 NM RNAV distance based longitudinal separation and 10 minutes time based separation minima shall be in practice until such time the DCPC requirements are fully met in the area under consideration. |
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3.5 15 minutes time based separation shall be applicable between aircraft on crossing tracks |
4. OPERATIONS BY AIRCRAFT NOT MEETING RNP 10 REQUIREMENTS |
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4.1 An aircraft that is unable to meet the minimum navigational requirements for RNP 10 must file flight plan at or below minimum flight level of the route. However operations of these aircraft will be subject to ATC approval, in accordance with the provisions of paragraph 5.2, if not approved will be required to file a flight plan to operate via alternate route. |
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4.2 ATC units, receiving a special request for a non-RNP 10 approved aircraft to operate on ATS routes specified in paragraph 2.1(a) at or above FL 280, 2.1 (b) at or above FL260 and para 2.1(c) to para 2.1 (p) below the lower limit of the routes, may consider such request in co-ordination with adjacent ATC units affected by the flight. In deciding whether or not to approve the flight, each ATC unit will take into consideration: |
a) Traffic density;
b) Communications, including the non-availability of normal communication facilities;
c) Weather conditions en-route;
d) Restrictions notified from time to time for the route;
e) Any other factors pertinent at that time.
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5 MONITORING OF AIRCRAFT NAVIGATION PERFORMANCE |
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5.1 Monitoring of aircraft navigation performance is a joint responsibility between Operators, States of Registry or States of Operators (as applicable), regulatory authorities and the ATS providers. The detection and reporting of nonconformance with the navigation requirements against the following parameters will rely primarily on monitoring by ATC units. |
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5.2 Large Lateral Deviation (LLD:
LLD is classified as any deviation of 15 NM or more to the left or right of the current flight-plan track. Large Longitudinal error (LLE) |
5.3 Large Longitudinal Error (LLE): Any unexpected change in longitudinal separation between an aircraft pair, or for an individual aircraft the difference between an estimate for a given fix and the actual time of arrival over that fix, as applicable, in accordance with the criteria set out below:
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Type of Error |
Category of Error |
Criterion for Reporting |
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Longitudinal
Deviation |
Aircraft-pair
(Time-based
separation applied) |
Infringement of longitudinal separation standard based on routine position reports |
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Longitudinal
Deviation |
Aircraft-pair
(Time-based
separation applied) |
Expected time between two aircraft varies by 3 minutes or more based on routine position reports |
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Longitudinal
Deviation |
Individual-aircraft
(Time-based
separation applied) |
Pilot estimate varies by 3 minutes or more from that advised in a routine position report |
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Longitudinal
Deviation |
Aircraft-pair
(Distance-based
separation applied) |
Infringement of longitudinal separation standard, based on ADS-C, radar measurement or special request for RNAV position report |
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Longitudinal
Deviation |
Aircraft-pair
(Distance-based
separation applied) |
Expected distance between an aircraft pair varies by 10NM or more, even if separation standard is not infringed, based on ADS-C, radar measurement or special request for RNAV position report |