All Engines Operating Go-Around Procedure

Gulfstream GVII

Eddie sez:

If you’ve ever hit the TO/GA button inadvertently during an approach and wondered how to recover the answer is you cannot if you are in IMC. Unlike other Gulfstreams, TO/GA in the GVII not only sequences the FMS into the missed approach, but it also gets rid of the approach navigation aids and pushes everything in the FMS into the go around mode. Unless you are in VMC or have a long way to go, if one of the pilots hits TO/GA, you are going around.

Everything here is from the references shown below, with a few comments in an alternate color.

Last revision:

20190603

AFM Procedure

[AFM, §02-05-60]

    CAUTION

    DO NOT ATTEMPT A GO-AROUND WITH LESS THAN 650 LBS OF FUEL INDICATED IN EITHER FUEL TANK.

  1. TO / GA . . . PRESS

  2. POWER LEVERS . . . Increase to Go-around Power

  3. This should be automatic, just verify that it happens.

  4. FLAPS . . . 20°

  5. Airspeed . . . VREF (Flaps 20°)

  6. When a Positive Rate of Climb Has Been Established

    1. LANDING GEAR . . . UP

  7. When airspeed is VREF (Flaps 20°) + 20:

    1. FLAPS . . . UP

Technique

[Ground and Flight Operations, pp. 249-250]

    General

  • When GA is the engaged vertical mode, the flight director commands an initial pull-up to a 12° flight path angle. Aircraft pitch will be higher, depending on angle of attack and the rate of acceleration. Under normal conditions the aircraft will continue to accelerate above the go-around speed targets, while at the 12° flight path angle commanded by the flight director. The rate of acceleration is very manageable, and minimizes the impact of a very steep deck angle that would occur while attempting to maintain the go-around speed targets.

  • Under one engine inoperative (OEI) conditions, or performance limited takeoffs (high/hot/heavyweight), the flight director will adjust the flight path angle target down from 12° to maintain a minimum airspeed of the go-around speed target. It will command no lower than a 1.8° flight path angle with all engines running, or 1.2° flight path angle during OEI operations. The flight director will also lower the flight path angle when the speed target changes and there is insufficient acceleration. The flight director will also pause at a flight path angle of 0° during the initiation of the go-around, if there is a large difference between the Perf Init go-around speed target and the current speed, and acceleration is needed.

  • The go-around speed targets are provided by the TOLD/AEDB database (if installed) or can be manually input by the pilot in the go-around section under the DEP/APR menu in Perf Init. Selection of the GA vertical mode (via TO/GA depress) automatically transitions from MAN speeds to Auto-speeds (go-around speed target), if MAN speeds are in use at the time of the TO/GA activation.

  • Typically the first go-around speed is VREF for flaps 20° which is equivalent to the flaps 39° approach speed (VREF+5 knots), so selection of flaps 20° during go-around from a normal approach should not change the FMS Speed target in the window on the GP.

  • Autopilot Engaged

  • The Pilot Flying (PF) will depress the Takeoff/Go-Around (TO/GA) button. The Auto-Throttles will advance to go-around power.

  • The Pilot Monitoring (PM) will confirm activation of missed approach routing on the FMS, and will set the Missed Approach Point (MAP) altitude, if not already set.

  • Monitor the autopilot as it rotates the aircraft toward the commanded attitude (12° flight path angle maximum). Commanded airspeed should be Flaps 20° VREF + 0 knots, which should be programmed by the pilot if TOLD is not installed.

  • If the FMS will not be used for the missed approach, the PM will select HDG SEL on the Flight Guidance Control Panel and set the missed approach heading.

  • At the command of the PF, the PM will set flaps to 20°.

  • When a positive rate of climb is attained, at the command of the PF, the PM will retract the landing gear.

  • When VREF (for flaps 20°) +20 knots is attained, the PF will direct the PM to retract flaps. Maintain speed for adequate stall margin.

  • The PM will confirm the desired guidance panel settings: Set altitude preselect to cleared or missed approach altitude, if not already set.

  • Autopilot Not Engaged

  • The PF will depress the TO/GA button and track the flight director.

  • NOTE

    If the MISSED APP icon is selected from the TSC tray, the flight guidance system will initiate the published missed approach at the missed approach point. If the TO/GA button is depressed, then go-around will initiate immediately. If Auto-Throttles are engaged, power will advance to go-around power and the flight director will command a climb.

  • The Pilot Monitoring (PM) will confirm activation of missed approach routing on the FMS, and will set the Missed Approach Point (MAP) altitude, if not already set.

  • The PF will rotate toward the aircraft toward the commanded attitude (12° flight path angle maximum). Commanded airspeed should be Flaps 20° VREF + 0 knots, which should be programmed by the pilot if TOLD is not installed.

  • If the FMS will not be used for the missed approach, the PM will select HDG SEL on the Flight Guidance Control Panel and set the missed approach heading.

  • At the command of the PF, the PM will set flaps to 20°.

  • When a positive rate of climb is attained, at the command of the PF, the PM will retract the landing gear.

  • When VREF (for flaps 20°) +20 knots is attained, the PF will direct the PM to retract flaps. Maintain speed for adequate stall margin.

  • The PM will confirm the desired guidance panel settings: Set altitude preselect to cleared or missed approach altitude, if not already set.


See Also:

Gulfstream GVII-G500 Airplane Flight Manual, Revision 4, August 29, 2019

Gulfstream GVII-G500 Ground and Flight Operations, released as part of the GVII-G500 AOM, §02-01-10