Contingencies Within RVSM Airspace

3-6 North Atlantic Guidance Material

7
th
Edition
i) making maximum use of exterior lights and ii) broadcasting position, flight level, and immediate intentions, on frequency 121.5 MHz and d) notify ATC of the failure and state the intended course of action. Possible courses of action include i) continuing in RVSM Airspace provided that the aircraft can maintain the CFL; or ii) requesting ATC clearance to climb above or descend below RVSM Airspace, if the aircraft cannot maintain the assigned flight level and ATC cannot establish increased vertical, longitudinal or lateral separation or iii) executing the appropriate contingency manoeuvre specified in ICAO Doc.7030 to leave the assigned route or track if prior ATC clearance cannot be obtained and the aircraft cannot maintain the assigned flight level.
3.11.3
ATC should take the following action a) obtain the pilot's intentions b) if the pilot intends to continue in RVSM Airspace, consider establishing increased vertical, longitudinal or lateral separation c) pass traffic information to the pilot d) if the pilot requests clearance to exit RVSM Airspace, accommodate that request as expeditiously as possible e) if increased vertical, longitudinal or lateral separation cannot be established and it is not possible to comply with the pilot's request for clearance to exit MNPS Airspace, then to notify other aircraft in the vicinity and continue to monitor the situation and f) advise adjacent ATC facilities/sectors, of the situation.
Loss of Redundancy in the Primary Altimetry Systems
3.11.4 The pilot should take the following action, if the remaining altimetry system is functioning normally a) couple that system to the AKD; b) notify ATC of the loss of redundancy and c) maintain increased vigilance regarding altitude-keeping.
3.11.5 If the pilot reports that the remaining system is functioning normally the ATC controller should acknowledge the situation and continue to monitor progress.

North Atlantic Guidance Material
3-7 7
th
Edition

2002
All Primary Altimetry Systems Fail or are Considered Unreliable
3.11.6 The pilot should a) maintain altitude - if necessary by reference to the standby altimeter (should the aircraft be so equipped b) alert nearby aircraft by i) making maximum use of exterior lights ii) broadcasting position, flight level and intentions on frequency 121.5 MHz. c) notify ATC of the inability to meet RVSM performance requirements, consider declaring an emergency and request clearance to exit MNPS Airspace. d) if unable to obtain ATC clearance in a timely manner, to execute appropriate contingency procedures, as specified in ICAO Doc.7030, for leaving the assigned route or track and descending below MNPS Airspace (if operationally feasible ore) if not operationally feasible to execute the appropriate contingency procedures and then continue to alert nearby aircraft and coordinate with ATC.
3.11.7
ATC should take the following action a) when notified by the pilot that the aircraft cannot meet RVSM performance requirements, attempt to establish increased vertical, longitudinal or lateral separation b) pass traffic information to the pilot c) if unable to establish increased separation, to consider other options, such as advising the pilot of traffic information and requesting the pilot's intentions d) if the pilot requests clearance to exit RVSM Airspace, then to accommodate the request as expeditiously as possible and e) if notified by the pilot of the loss of all acceptable altimetry systems, to notify the pilot of traffic information, advise aircraft in the vicinity and monitor the situation.
Primary Altimeters Diverge by More than 60 m (200 ft)
3.11.8 The pilot should a) attempt to determine the defective system through established troubleshooting procedures and/or compare primary altimeter displays with those of the standby altimeter (as corrected from correction cards, if applicable b) if the defective system can be determined, couple the functioning altimetry system to the
AKD; orc) if the defective system cannot be determined, follow the guidance above regarding failure or unreliable altimeter indications of all primary altimeters, in conjunction as appropriate with
ATC.

3-8 North Atlantic Guidance Material

7
th
Edition

2002

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