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‐ Use the transponder and autopilot, associated with one of the ADR(s) that is within tolerance.
POST FLIGHT
The crew must report any malfunction in the height-keeping systems including :
‐ the malfunction or the loss of any required equipment
‐ altimeter readings outside the tolerances (Refer to PRO-SUP-34 FLIGHT INSTRUMENT
TOLERANCES),
and provide sufficient details to enable maintenance to troubleshoot and repair the system.
ABN AND EMER PROCEDURES
When in RVSM airspace, the following contingencies which affect the ability to maintain the
cleared flight level will be notified to ATC.
‐ failure of both autopilot,
‐ loss of altimeter system redundancy (only one PFD indication remaining),
‐ failure of any other equipment affecting the ability to maintain the cleared flight level, or
‐ encountering greater than moderate turbulence.
Note: The flight crew can obtain the contingency procedures for flying in Minimum Navigation
Performance Specification (MNPS) airspace by referring to specific manuals, such as, for
example, the North Atlantic (NAT) MNPS Manual.
If unable to notify ATC and obtain ATC clearance before deviating from the assigned cleared flight
level, the crew should follow the established contingency procedure and obtain ATC clearance as
soon as possible.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
RVSM
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A330/A340 FLEET PRO-SPO-50 P 4/4
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
RNP
A330/A340 FLEET PRO-SPO-51 P 1/8
FCOM 19 AUG 10
GENERAL
Applicable to:
The aircraft navigation system, required by regulation to fly within a Required Navigation
Performance (RNP) airspace, shall comply with RNAV functionality criteria and with navigation
position accuracy and integrity criteria.
When referring to RNP-X, the value of X is the navigation accuracy expressed in NM, which has to
be met with a probability of 95 %.
An RNP value can be associated with an airspace, a route, a SID, a STAR, a RNAV approach or an
RNAV missed approach procedure.
Depending of the RNP value, and on the airspace environment (ground radio navaid), different
navigation equipment may be necessary.
An operational approval from the airline’s national authorities may be necessary.
NAVIGATION SYSTEM CAPABILITY (FOR REFERENCE ONLY)
European BRNAV (RNP-5) and P-RNAV (RNP-1) capability meets the certification requirements
of JAA TGL2 and TGL10. Terminal and en-route RNAV operations comply with the certification
requirements of the FAA Advisory Circular 90-100.
RNP-10 capability in oceanic or remote areas complies with paragraph 12.b.(1) of FAA Notice
8400.12A or with paragraph 12.a. or 12.b.(5), if GPS is installed and is operative.
Navigation system with the GPS PRIMARY function (if GPS installed) meets the certification
requirements of FAA AC 20–130A and TSO C 129A in class C1 (for navigation system with
multiple sensor inputs including GPS).
RNP CAPABILITY
In order to match a given RNP value, the FMS-estimated position accuracy (also called Estimated
Position Error) must be better than the RNP value. Obviously, this is dependent on the FMS
navigation-updating mode (GPS, DME/DME, VORDME, or IRS).
On the MCDU PROG page, the required and the estimated position accuracy are displayed, and
determine the HIGH/LOW accuracy indication (Refer to STLO-22_20_R-20-05 NAVIGATION).
The required accuracy can be the default value, which is a function of the flight phase, or a value
manually-entered by the crew.
When flying in RNP environment, the crew can insert the appropriate RNP value in the
REQUIRED ACCUR field of the PROG page.
When HIGH is displayed, the RNP ‐ requirement is estimated to be fulfilled.
‐ When LOW is displayed, the RNP requirement is estimated not to be fulfilled. In this case :
• The crew crosscheck navigation with raw data, if available.
• If the crosscheck is negative, or if raw data is unavailable, the crew informs the ATC.
When leaving the RNP environment, the crew will clear the manually-entered required accuracy.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SPECIAL OPERATIONS
RNP
A330/A340 FLEET PRO-SPO-51 P 2/8
FCOM 19 AUG 10
WITHOUT GPS PRIMARY FUNCTION
RNP accuracy criteria are met, provided radio navaid coverage supports it for :
‐ RNP-1 en route and in the terminal area, provided a required accuracy of 1 nm See (1) is
checked or manually entered in the MCDU.
‐ RNP-0.3 in approach, provided a required accuracy of 0.3 nm See (1) is checked or,
manually entered in the MCDU.
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