Index   271 -- Page 272 -- 273

7110.65R
AIM
AIM      CHG 2                                                                                                         3/15/07
                                                                                                                      11/10/16
                                                                                                                      12/10/15




                               Mountain Wave Activity (MWA) Encounters - General
    Pilot actions:                                              Controller actions:
        SContact ATC and report experiencing MWA                  SAdvise pilot of conflicting traffic at adjacent FL

        SIf so desired, pilot may request a FL change or            SIf pilot requests, vector aircraft to avoid merging
        re-route                                                    target with traffic at adjacent RVSM flight levels,
                                                                    traffic permitting
        SReport location and magnitude of MWA to ATC
                                                                    SIssue FL change or re-route, traffic permitting

                                                                   SIssue PIREP to other aircraft
    See paragraph 4-6-6 for guidance on MWA.                    Paragraph 4-6-6 explains "traffic permitting."
    NOTE-
    MWA encounters do not necessarily result in altitude deviations on the order of 200 feet. The guidance below is
    intended to address less significant MWA encounters.


                                              Wake Turbulence Encounters
    Pilot should:                                               Controller should:
        SContact ATC and request vector, FL change or,             SIssue vector, FL change or lateral offset
        if capable, a lateral offset                               clearance, traffic permitting
    See Paragraph 4-6-7, Guidance on Wake                       Paragraph 4-6-6 explains "traffic permitting."
    Turbulence.

                                       "Unable RVSM Due Equipment"
           Failure of Automatic Altitude Control System, Altitude Alerter or All Primary Altimeters
    Pilot will:                                                 Controller will:
        SContact ATC and state "Unable RVSM Due                   SProvide 2,000 feet vertical separation or
        Equipment"                                                appropriate horizontal separation

        SRequest clearance out of RVSM airspace unless              SClear aircraft out of RVSM airspace unless
        operational situation dictates otherwise                    operational situation dictates otherwise

                                     One Primary Altimeter Remains Operational
    Pilot will:                                                 Controller will:
        SCross check stand-by altimeter                           SAcknowledge operation with single primary
                                                                  altimeter
        SNotify ATC of operation with single primary
        altimeter

        SIf unable to confirm primary altimeter accuracy,
        follow actions for failure of all primary altimeters




4-6-8                          Operational Policy/Procedures for Reduced Vertical Separation Minimum (RVSM) in the
                                                       Domestic U.S., Alaska, Offshore Airspace and the San Juan FIR