A Complete Manual for Conducting International Flight Operations
International RVSM procedures for crewmembers do not change significantly from domestic RVSM procedures, but there are several important points of note.
International RVSM Considerations
1. RVSM Approval
5. RVSM Contingencies
All flights within RVSM must have the approval of either the State of Registry or the State of Operator. For a Part 91 Operator this would be in the form of an LOA, or for a Part 135 Operator this would be in the form of Operations Specifications. In order to be RVSM compliant the aircraft must be listed on the Operations Specifications. Aircraft with pink temporary registration certificates will not be RVSM compliant until added to the Operations Specifications. For operations in the North Atlantic, exceptions may be granted if the aircraft is on a delivery flight, or was RVSM approved but has suffered an equipment failure and is being returned to its base, or is on a mercy or humanitarian flight.
2. Altimetry System Serviceability
The serviceability of the altimetry system must be determined prior to entry into oceanic airspace, and it must be determined that the altimeters agree within plus or minus 200 feet. For crewmembers, the RVSM accuracy check shall be conducted on the appropriate leg sheet prior to entry into oceanic airspace.
3. Standard Equipment Requirements
The standard equipment requirements also apply which consist of dual independent altimetry systems with cross coupled static sources, an altitude alerter, which alerts the flight crew of altitude deviations greater than 200 feet, a transponder and an autopilot. All systems must be operational. An RVSM check shall also be conducted at one hour intervals within oceanic airspace. It is recommended that crewmembers log all RVSM checks in order to document the established flight level should a height keeping discrepancy occur.
Should a contingency develop while in RVSM airspace, the following shall apply: The pilot shall notify ATC of contingencies (aircraft system failures, weather conditions, etc.) which affect the ability to maintain the CFL and coordinate a plan of action.
Equipment failures that shall be reported to ATC include, but are not limited to, the following:
FAILURE OF ALL AUTOMATIC ALTITUDE CONTROL SYSTEMS
LOSS OF REDUNDANCY OF ALTIMETRY SYSTEMS
GREATER THAN MODERATE TURBULANCE OR MOUNTAIN WAVE ACTIVITY
If receiving a clearance is not possible prior to deviating, the flight crew shall proceed as follows: maintain the cleared flight level to the extent possible while evaluating the situation; watch for conflicting traffic both visually and by reference to TCAS; alert nearby aircraft by illuminating exterior lights (commensurate with aircraft limitations); and broadcasting intentions on 121.5.
4. Height Keeping Errors
Should a height keeping error of 300 feet or greater occur, a deviation report must be filed, and the ATS provider will follow-up with the aircraft operator or State of Registry.
Revision date: July 29, 2015
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