APPROACH GROSS CLIMB GRADIENT&

LANDING GROSS CLIMB GRADIENT

REVIEW

When flying an approach, rememberto review all the information in theheading strip for the Pre-ApproachBriefing Information.

In this example, there is a climb in theMissed Approach instructions thatincludes a minimum climb gradient.

334’ ÷ 60 = 5.56 Climb Gradient

When reviewing an approach and theMissed Approach Climb GradientRequirement & Capability, refer to theAFM Performance Planning Section.There are two values to consider.

● Approach Gross Climb Gradient• One engine inoperative.• The remaining engine(s) at takeoff thrust.• Flaps in the designated configuration.• Landing gear retracted.• A climb gradient of 2.1% for 2 engineaircraft minimum

• A maximum speed of 1.5 VS.

The approach climb situation is like makingan engine out approach in IMC. At theMDA the runway is not in sight so themissed approach is begun. The Go-Aroundbutton is pushed, maximum power isapplied, the flaps are retracted to the go-around setting and the aircraft isrotated to the go-around attitude. When apositive rate is recognized, the gear isretracted. At this point you are in theApproach Climb configuration and yourgradient required is as indicated above.

● Landing Gross Climb Gradient • All engines operating “at the thrust

that is available 8 seconds after initiationof movement of the thrust controls from

the minimum flight idle position to thetakeoff position”.

• Flaps in the landing configuration.• Landing gear down.• A climb gradient of 3.2% minimum.• A maximum speed of 1.3 VS for allaircraft.

The landing climb is more like a balked landing. You reach 50 feet above the runway at VREF,reduce the power to idle in preparation to touch down. At this time the tower calls for a go-aroundfor a vehicle on the runway. As above you hit the Go-Around button, apply maximumpower and rotate to the V bars. You are in the Landing Climb configuration!

For the Missed Approach Climb gradient requirement at BUR, the 5.56 would be the Landing GrossClimb Gradient as listed in the AFM.

● BUR Elevation 778’ ● Missed Approach Altitude 4,000’● Temp 15º C ( apply standard lapse rate to 4,000’)

● GWT at Landing 17,000 lbs● Anti-Ice Off● Flaps 35º● Zero Wind

The Chart shows a Landing Gross Climb Gradient capability of 23.3