Name of FIR:

Please complete Section I or II as appropriate:

If there were no reports of large altitude deviation, only Section I should be finished.

If there were reports of large altitude deviation, please finish both Section I and Section II. If there were more than one report, each report should write a separate piece of Table B.

Section I:

There were no reports of large altitude deviation for the month of........................................

Section II:

There was/were ........................ report(s) of an altitude deviation of 90m (300ft) or more between 8900m and 12500m. Details of the altitude deviation can be found in table in 1.13.1.

(Please use a separate table for each report of large height deviation).

Section III:

When complete, please return to the following e-mail: safety-atc@mcaa.gov.mn

For a pilot to report non-RVSM approval status:

i) On the initial call on any frequency within the RVSM airspace (controller shall provide a read-back with the same phrase); and

ii) In all requests for flight level changes pertaining to flight levels within the RVSM airspace; and

iii) In all read-backs to flight level clearances pertaining to flight levels within the RVSM airspace.

Additionally, except for State aircraft, pilots shall include this phrase to read back flight level clearances involving the vertical transit through 8900m or 12500m.

See examples that follow.

NEGATIVE RVSM

Denial of clearance into the RVSM airspace:

For a pilot to report when severe turbulence affects the aircraft’s capability to maintain the height-keeping requirements for RVSM:

For a pilot to report that the aircraft’s equipment has degraded enroute below that required MASPS Minimum Aviation System Performance Standards for flight within the RVSM airspace:

(This phrase is to be used to convey both the initial indication of the non-MASPS compliance, and henceforth, on initial contact on all frequencies within the lateral limits of the RVSM airspace until such time as the problem ceases to exist, or the aircraft has exited the RVSM airspace.)

UNABLE RVSM DUE EQUIPMENT

For a pilot to report the ability to resume operations within the RVSM airspace after an equipment or weather-related contingency:

For a controller to confirm that an aircraft has regained its RVSM approval status or to confirm that the pilot is ready to resume RVSM operations:

Example 1:

A non-RVSM approved aircraft, maintaining 7800m (FL256), subsequently requests a climb to 9800m (FL321):

Pilot: (call sign) REQUEST 9800m (FL321), NEGATIVE RVSM

Controller: (call sign) CLIMB TO 9800m (FL321)

Pilot: (call sign) CLIMB TO 9800 m (FL321), NEGATIVE RVSM

Example 2:

A non-RVSM approved aircraft, maintaining 11000m (FL361), subsequently requests a climb to 11600m (FL381):

Pilot: (call sign) REQUEST 11600m (FL381), NEGATIVE RVSM

Controller: (call sign) CLIMB TO 11600m (FL381)

Pilot: (call sign) CLIMB TO 11600m (FL381), NEGATIVE RVSM

Example 3:

A non-RVSM approved civil aircraft maintaining 8400m (FL276), subsequently requests a climb to 9800m (FL321).

Pilot: (call sign) REQUEST 9800m (FL321), NEGATIVE RVSM

Controller: (call sign) UNABLE ISSUE CLEARANCE INTO RVSM AIRSPACE, MAINTAIN 8400m (FL276)

Example 4:

Air traffic controller instructs a RVSM approved civil aircraft to maintain 9200m, but he finds the aircraft is actually flying FL302. ATC will inform the Pilot to use the Mongolia RVSM Diagram to determine the corresponding flight level in feet.

Controller: (call sign) MAINTAIN 9200m

Pilot: (call sign) MAINTAIN 9200m

Controller: (call sign) MAINTAIN 9200m, CONVERT ALTITUDE WITH MONGOLIA RVSM FLIGHT LEVEL CHART.

The Pilot shall use the Mongolia RVSM Diagram to determine that, for 9200m, the corresponding flight level in feet is FL301, then flies the aircraft at FL301, and then:

Pilot: (call sign) MAINTAIN 9200m

To verbally supplement an automated estimate message exchange which does not automatically transfer Item 18 flight plan information:

To verbally supplement estimate messages of non-RVSM approved aircraft:

To communicate the cause of a contingency relating to an aircraft that is unable to conduct RVSM operations due to severe turbulence or other severe weather-related phenomenon [or equipment failure, as applicable]:

Initial Pilot Actions when unable to maintain flight level (FL) or unsure of aircraft altitude-keeping capability:

Notify ATC and request assistance as detailed below.

Maintain cleared flight level, to the extent possible, while evaluating the situation.

Maintain watch for conflicting traffic both visually and by reference to TCAS.

Alert nearby aircraft by illuminating exterior lights.

If unable to contact ATC, broadcast position, flight level and intention on 121.5MHZ (or, as a backup 5680KHZ).

Pilot will:

• When experiencing severe turbulence and/or MWA induced altitude deviations of approximately 60m (200ft) or greater, pilot will contact ATC and state ’Unable RVSM Due (state reason)’ (e.g., turbulence, mountain wave).

• If not issued by the controller, request vector clear of traffic at adjacent FL’s.

• If desired, request FL change.

• Report location and magnitude of turbulence or MWA to ATC.

Controller will:

• Assess the traffic situation to determine if the aircraft can be accommodated through the provision of lateral, longitudinal or increased vertical separation and, if so, apply the appropriate minimum.

• Advise pilot of conflicting traffic.

• Issue FL change, traffic permitting.

• Issue PIREP to other aircraft.

Pilot actions:

• Contact ATC and report experiencing MWA.

• Report location and magnitude of MWA to ATC.

• If so desired, pilot may request a FL change or deviation from the intended route.

Controller actions:

• Advise pilot of conflicting traffic at adjacent FL.

• If pilot requests, vector aircraft to avoid merging target with traffic at adjacent RVSM flight levels, traffic permitting.

• Issue FL change or re-route, traffic permitting.

• Issue PIREP to other aircraft.

Pilot should:

• Contact ATC and request vector, FL change or, if capable, a lateral offset to right 2NM.

Controller should:

• Issue clearance of vector, FLchange or lateral offset to right 2NM, traffic permitting.

Pilot will:

• Contact ATC and state "Unable RVSM Due Equipment".

• Request clearance out of RVSM airspace unless operational situation dictates otherwise.

Controller will:

• Provide 600m (2000ft) vertical separation or appropriate horizontal separation.

• Clear aircraft out of RVSM airspace unless operational situation dictates otherwise.

Pilot will:

• Cross check stand-by altimeter.

• Notify ATC of operation with single primary altimeter.

• If unable to confirm primary altimeter accuracy, follow actions for failure of all primary altimeters.

Controller will:

• Acknowledge operation with single primary altimeter.

Note: Aircraft are able to operate in RVSM airspace at this situation except that pilot report unable RVSMdue equipment.

• Relay to other controllers or facilities who will subsequently handle the aircraft and any special handling requirement or being provided.

Pilot will:

• Contact ATCand request authority to continue to operate at cleared flight level.

• Comply with revised ATC clearance, if issued.

Controller will:

• Consider request to continue to operate at cleared flight level.

• Issue revised clearance, if necessary.

Pilot will:

• Notify ATCof aircraft location and request FL change as required.

• Upon declaring an emergency a pilot may exercise his right and change his assigned flight level. He shall notify ATC immediately and submit a report upon arrival at the destination.

• If unable to contact ATC and rapid descent required:

a) Deviation procedure for level change: 30° right and track out 20km (i.e. deviate right of airway centerline by 10km or 5NM), then turn left to track parallel the original route, then climb or descend to the new level, and then return to the original one (when appropriate).

Note: When return to the original route, it is possible to have conflict traffic on that route.

b) Establish communications with and alert nearby aircraft by broadcasting, at suitable intervals: flight identification, flight level, aircraft position and intention on the frequency in use, as well as on frequency 121.5MHZ (or, as a backup 5680KHZ).

c) Establish visual contact with conflicting traffic.

d) Turn on all aircraft exterior lights.

Controller will:

• Issue ATC clearance to change flight level.