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Archive / FAA Pilot’s Handbook of Aeronautical Knowledge / Pilot’s Handbook: Chapter 2 — Aeronautical Decision-Making

Chapter 2, Part 3

Aeronautical Decision-Making — Part 3

FAA-H-8083-25C (2023)

Figure 2-10. Risk management processing can take place in any of three timeframes.

Strategic Deliberate Time-Critical

Purpose

Used in a complex operation (e.g.,

introduction of new equipment); involves

research, use of analysis tools, formal

testing, or long term tracking of risks.

Uses experience and brainstorming to identify

hazards, assess risks, and develop controls

for planning operations, review of standard

operating or training procedures, etc.

“On the fly” mental or verbal review using

the basic risk management process

during the execution phase of an activity.

Passengers can also be pilots. If no one is designated as pilot

in command (PIC) and unplanned circumstances arise, the

decision-making styles of several self-confident pilots may

come into conflict.

Pilots also need to understand that non-pilots may not

understand the level of risk involved in flight. There is an

element of risk in every flight. That is why SRM calls it risk

management, not risk elimination. While a pilot may feel

comfortable with the risk present in a night IFR flight, the

passengers may not. A pilot employing SRM should ensure

the passengers are involved in the decision-making and given

tasks and duties to keep them busy and involved. If, upon a

factual description of the risks present, the passengers decide

to buy an airline ticket or rent a car, then a good decision has

generally been made. This discussion also allows the pilot

to move past what he or she thinks the passengers want to

do and find out what they actually want to do. This removes

self-induced pressure from the pilot.

The Programming

The advanced avionics aircraft adds an entirely new

dimension to the way GA aircraft are flown. The electronic

instrument displays, GPS, and autopilot reduce pilot

workload and increase pilot situational awareness. While

programming and operation of these devices are fairly

simple and straightforward, unlike the analog instruments

they replace, they tend to capture the pilot’s attention and

hold it for long periods of time. To avoid this phenomenon,

the pilot should plan in advance when and where the

programming for approaches, route changes, and airport

information gathering should be accomplished, as well as

times it should not. Pilot familiarity with the equipment, the

route, the local ATC environment, and personal capabilities

vis-à-vis the automation should drive when, where, and how

the automation is programmed and used.

The pilot should also consider what his or her capabilities

are in response to last minute changes of the approach (and

the reprogramming required) and ability to make large-scale

changes (a reroute for instance) while hand flying the aircraft.

Since formats are not standardized, simply moving from one

manufacturer’s equipment to another should give the pilot

pause and require more conservative planning and decisions.

The SRM process is simple. At least five times before

and during the flight, the pilot should review and consider

the “Plan, the Plane, the Pilot, the Passengers, and the

Programming” and make the appropriate decision required

by the current situation. It is often said that failure to make

a decision is a decision. Under SRM and the 5 Ps, even the

decision to make no changes to the current plan is made

through a careful consideration of all the risk factors present.

Perceive, Process, Perform (3P) Model

The Perceive, Process, Perform (3P) model for ADM offers

a simple, practical, and systematic approach that can be used

during all phases of flight. To use it, the pilot will:

• Perceive the given set of circumstances for a flight

• Process by evaluating their impact on flight safety

• Perform by implementing the best course of action

Use the Perceive, Process, Perform, and Evaluate method as

a continuous model for every aeronautical decision that you

make. Although human beings will inevitably make mistakes,

anything that you can do to recognize and minimize potential

threats to your safety will make you a better pilot.

Depending upon the nature of the activity and the time

available, risk management processing can take place in

any of three timeframes. [Figure 2-10] Most flight training

activities take place in the “time-critical” timeframe for

risk management. The six steps of risk management can be

combined into an easy-to-remember 3P model for practical

risk management: Perceive, Process, Perform with the PAVE,

CARE and TEAM checklists. Pilots can help perceive

hazards by using the PAVE checklist of: Pilot, Aircraft,

enVironment, and External pressures. They can process

hazards by using the CARE checklist of: Consequences,

Alternatives, Reality, External factors. Finally, pilots can

perform risk management by using the TEAM choice list

of: Transfer, Eliminate, Accept, or Mitigate.

PAVE Checklist: Identify Hazards and Personal

Minimums

In the first step, the goal is to develop situational awareness

by perceiving hazards, which are present events, objects, or

circumstances that could contribute to an undesired future

event. In this step, the pilot will systematically identify and

Gayle is a healthy and well-rested private pilot with

approximately 300 hours total flight time. Hazards include her

lack of overall and cross-country experience and the fact that

she has not flown at all in 2 months.

Pilot

Departure and destination airports have long runways.

Weather is the main hazard. Although it is VFR, it is a typical

summer day in the Mid-Atlantic region: hot (near 90 °F) hazy

(visibility 7 miles), and humid with a density altitude of 2,500

feet. Weather at the destination airport (located in the

mountains) is still IMC but forecast to improve to visual

meteorological conditions (VMC) prior to her arrival. En route

weather is VMC, but there is an AIRMET Sierra for pockets of

IMC over mountain ridges along the proposed route of flight.

EnVironment

Aircraft

Although it does not have a panel-mount GPS or weather

avoidance gear, the aircraft—a C182 Skylane with long-range

fuel tanks—is in good mechanical condition with no inoperative

equipment. The instrument panel is a standard “six-pack.”

External pressures

Gayle is making the trip to spend a weekend with relatives she

does not see very often. Her family is very excited and has

made a number of plans for the visit.

Pilots can perceive hazards by using the PAVE checklist:

Figure 2-11. A real-world example of how the 3P model guides decisions on a cross-country trip using the PAVE checklist.

list hazards associated with all aspects of the flight: Pilot,

Aircraft, enVironment, and External pressures, which makes

up the PAVE checklist. [Figure 2-11] For each element,

ask “what could hurt me, my passengers, or my aircraft?”

All four elements combine and interact to create a unique

situation for any flight. Pay special attention to the pilot-

aircraft combination, and consider whether the combined

“pilot-aircraft team” is capable of the mission you want to fly.

For example, you may be a very experienced and proficient

pilot, but your weather flying ability is still limited if you

are flying a 1970s-model aircraft with no weather avoidance

gear. On the other hand, you may have a new technically

advanced aircraft with moving map GPS, weather datalink,

and autopilot—but if you do not have much weather flying

experience or practice in using this kind of equipment, you

cannot rely on the airplane’s capability to compensate for

your own lack of experience.

CARE Checklist: Review Hazards and Evaluate Risks

In the second step, the goal is to process this information to

determine whether the identified hazards constitute risk, which

is defined as the future impact of a hazard that is not controlled

or eliminated. The degree of risk posed by a given hazard

can be measured in terms of exposure (number of people or

resources affected), severity (extent of possible loss), and

probability (the likelihood that a hazard will cause a loss). The

goal is to evaluate their impact on the safety of your flight,

and consider “why must I CARE about these circumstances?”

For each hazard that you perceived in step one, process by

using the CARE checklist of: Consequences, Alternatives,

Reality, External factors. [Figure 2-12] For example, let's

evaluate a night flight to attend a business meeting:

C onsequences—departing after a full workday creates

fatigue and pressure

A lternatives—delay until morning; reschedule

meeting; drive

R eality —dangers and distractions of fatigue could

lead to an accident

E xternal pressures—business meeting at destination

might influence me

A good rule of thumb for the processing phase: if you find

yourself saying that it will “probably” be okay, it is definitely

time for a solid reality check. If you are worried about missing

a meeting, be realistic about how that pressure will affect

not just your initial go/no-go decision, but also your inflight

decisions to continue the flight or divert.

TEAM Checklist: Choose and Implement Risk

Controls

Once you have perceived a hazard (step one) and processed

its impact on flight safety (step two), it is time to move to the

third step, perform. Perform risk management by using the

TEAM checklist of: Transfer, Eliminate, Accept, Mitigate

to deal with each factor. [Figure 2-13]

Transfer—Should this risk decision be transferred to

someone else (e.g., do you need to consult the chief

flight instructor?)

Eliminate—Is there a way to eliminate the hazard?

Accept—Do the benefits of accepting risk outweigh

the costs?

Mitigate—What can you do to mitigate the risk?

The goal is to perform by taking action to eliminate hazards

or mitigate risk, and then continuously evaluate the outcome

of this action. With the example of low ceilings at destination,

for instance, the pilot can perform good ADM by selecting

a suitable alternate, knowing where to find good weather,

Figure 2-12. A real-world examples of how the 3P model guides decisions on a cross-country trip using the CARE checklist.

• Consequences: Gayle’s inexperience and lack of recent

flight time create some risks for an accident, primarily because

she plans to travel over mountains on a hazy day and land

at an unfamiliar mountain airport that is still in IMC

conditions.

• Alternatives: Gayle might mitigate the pilot-related risk by

hiring a CFI to accompany her and provide dual cross-

country instruction. An added benefit is the opportunity to

broaden her flying experience in safe conditions.

• Reality: Accepting the reality that limited experience can

create additional risks is a key part of sound risk management

and mitigation.

• External Factors: Like many pilots, Gayle must contend with

the emotional pressure associated with acknowledging that

her skill and experience levels may be lower than she would

like them to be. Pride can be a powerful external factor!

Pilot

• Consequences: For a pilot whose experience consists

mostly of local flights in good VMC, launching a long cross-

country flight over mountainous terrain in hazy conditions

could lead to pilot disorientation and increase the risk of an

accident.

• Alternatives: Options include postponing the trip until the

visibility improves, or modifying the route to avoid extended

periods of time over the mountains.

• Reality: Hazy conditions and mountainous terrain clearly

create risks for an inexperienced VFR-only pilot.

• External Factors: Few pilots are immune to the pressure of

“get-there-itis,” which can sometimes induce a decision to

launch or continue in less than ideal weather conditions.

Environment

Aircraft

• Consequences: This area presents low risk because the

aircraft is in excellent mechanical condition and Gayle is

familiar with its avionics.

• Alternatives: Had there been a problem with her aircraft,

Gayle might have considered renting another plane from her

flight school. Bear in mind, however, that alternatives

sometimes create new hazards. In this instance, there may

be hazards associated with flying an unfamiliar aircraft with

different avionics.

• Reality: It is important to recognize the reality of an aircraft’s

mechanical condition. If you find a maintenance discrepancy

and then find yourself saying that it is “probably” okay to fly

with it anyway, you need to revisit the consequences part of

this checklist.

• External Factors: Pilot decision-making can sometimes be

influenced by the external pressure of needing to return the

airplane to the FBO by a certain date and time. Because

Gayle owns the airplane, there was no such pressure in this

case.

External pressures

• Consequences: Any number of factors can create the risk of

emotional pressure from a “get-there” mentality. In Gayle’s

case, the consequences of her strong desire to visit family,

her family’s expectations, and personal pride could induce

her to accept unnecessary risks.

• Alternatives: Gayle clearly needs to develop a mitigating

strategy for each of the external factors associated with this

trip.

• Reality: Pilots sometimes tend to discount or ignore the

potential impact of these external factors. Gayle’s open

acknowledgement of these factors (e.g., “I might be

pressured into pressing on so my mother won’t have to

worry about our late arrival.”) is a critical element of effective

risk management.

• External Factors: (see above)

Pilots can perceive hazards by using the CARE checklist:

and carrying sufficient fuel to reach it. This course of action

would mitigate the risk. The pilot also has the option to

eliminate it entirely by waiting for better weather.

Once the pilot has completed the 3P decision process and

selected a course of action, the process begins anew because

now the set of circumstances brought about by the course of

action requires analysis. The decision-making process is a

continuous loop of perceiving, processing, and performing.

With practice and consistent use, running through the 3P

cycle can become a habit that is as smooth, continuous, and

automatic as a well-honed instrument scan. This basic set

of practical risk management tools can be used to improve

risk management.

Your mental willingness to follow through on safe decisions,

especially those that require delay or diversion is critical. You

can bulk up your mental muscles by:

• Using personal minimums checklist to make some

decisions in advance of the flight. To develop a good

personal minimums checklist, you need to assess your

abilities and capabilities in a non-flying environment,

when there is no pressure to make a specific trip. Once

developed, a personal minimums checklist will give

you a clear and concise reference point for making

your go/no-go or continue/discontinue decisions.

• In addition to having personal minimums, some pilots

also like to use a preflight risk assessment checklist to

help with the ADM and risk management processes.

This kind of form assigns numbers to certain risks

and situations, which can make it easier to see when

a particular flight involves a higher level of risk

• Develop a list of good alternatives during your

processing phase. In marginal weather, for instance,

you might mitigate the risk by identifying a reasonable

Figure 2-13. A real-world example of how the 3P model guides decisions on a cross-country trip using the TEAM checklist.

To manage the risk associated with her inexperience and lack

of recent flight time, Gayle can:

• Transfer the risk entirely by having another pilot act as PIC.

• Eliminate the risk by canceling the trip.

• Accept the risk and fly anyway.

• Mitigate the risk by flying with another pilot.

Gayle chooses to mitigate the major risk by hiring a CFI to

accompany her and provide dual cross-country instruction.

An added benefit is the opportunity to broaden her flying

experience.

Pilot

To manage the risk associated with hazy conditions and

mountainous terrain, Gayle can:

• Transfer the risk of VFR in these conditions by asking an

instrument-rated pilot to fly the trip under IFR.

• Eliminate the risk by canceling the trip.

• Accept the risk.

• Mitigate the risk by careful preflight planning, filing a VFR

flight plan, requesting VFR flight following, and using

resources such as Flight Watch.

Detailed preflight planning must be a vital part of Gayle’s

weather risk mitigation strategy. The most direct route would

put her over mountains for most of the trip. Because of the

thick haze and pockets of IMC over mountains, Gayle might

mitigate the risk by modifying the route to fly over valleys. This

change will add 30 minutes to her estimated time of arrival

(ETA), but the extra time is a small price to pay for avoiding

possible IMC over mountains. Because her destination airport

is IMC at the time of departure, Gayle needs to establish that

VFR conditions exist at other airports within easy driving

distance of her original destination. In addition, Gayle should

review basic information (e.g., traffic pattern altitude, runway

layout, frequencies) for these alternate airports. To further

mitigate risk and practice good cockpit resource management,

Gayle should file a VFR flight plan, use VFR flight following,

and call Flight Watch to get weather updates en route. Finally,

basic functions on her handheld GPS should also be practiced.

Environment

Aircraft

To manage risk associated with any doubts about the aircraft’s

mechanical condition, Gayle can:

• Transfer the risk by using a different airplane.

• Eliminate the risk by canceling the trip.

• Accept the risk.

• Mitigate the remaining (residual) risk through review of

aircraft performance and careful preflight inspection.

Since she finds no problems with the aircraft’s mechanical

condition, Gayle chooses to mitigate any remaining risk

through careful preflight inspection of the aircraft.

External pressures

To mitigate the risk of emotional pressure from family

expectations that can drive a “get-there” mentality, Gayle can:

• Transfer the risk by having her co-pilot act as PIC and make

the continue/divert decision.

• Eliminate the risk by canceling the trip.

• Accept the risk.

• Mitigate the risk by managing family expectations and

making alternative arrangements in the event of diversion to

another airport.

Gayle and her co-pilot choose to address this risk by agreeing

that each pilot has a veto on continuing the flight, and that they

will divert if either becomes uncomfortable with flight conditions.

Because the destination airport is still IMC at the time of

departure, Gayle establishes a specific point in the trip—an en

route VORTAC located between the destination airport and the

two alternates—as the logical place for her “final” continue/

divert decision. Rather than give her family a specific ETA that

might make Gayle feel pressured to meet the schedule, she

manages her family’s expectations by advising them that she

will call when she arrives.

Pilots can perform risk management by using the TEAM checklist:

alternative airport for every 25–30 nautical mile

segment of your route.

• Preflight your passengers by preparing them for the

possibility of delay and diversion, and involve them

in your evaluation process.

• Another important tool—overlooked by many pilots—

is a good post-flight analysis. When you have safely

secured the airplane, take the time to review and

analyze the flight as objectively as you can. Mistakes

and judgment errors are inevitable; the most important

thing is for you to recognize, analyze, and learn from

them before your next flight.

The DECIDE Model

Using the acronym “DECIDE,” the six-step process DECIDE

Model is another continuous loop process that provides the

pilot with a logical way of making decisions. [Figure 2-14]

DECIDE means to Detect, Estimate, Choose a course of

action, Identify solutions, Do the necessary actions, and

Evaluate the effects of the actions.

First, consider a recent accident involving a Piper Apache (PA-

23). The aircraft was substantially damaged during impact

with terrain at a local airport in Alabama. The certificated

airline transport pilot (ATP) received minor injuries and the

certificated private pilot was not injured. The private pilot

1.

2.

3.

4

5.

6.

The DECIDE model

Aeronautical Decision-Making

A. Analytical B. Automatic/Naturalistic

Evaluation of event

Outcome desired

What is best action to do

Effect of decision

Detection

Situation

Pilot

Aircraft

Enviroment

External factors

• Risk or hazard

• Potential outcomes

• Capabilities of pilot

• Aircraft capabilities

• Outside factors

Solutions to get you there

Solution 1

Solution 2

Solution 3

Solution 4

Problem remains

Done

Evaluation of event

Outcome desired

Take action

Detection

Pilot

Aircraft

Enviroment

External factors

• Risk to flight

• Pilot training

• Pilot experience

Successful

Figure 2-14. The DECIDE model has been recognized worldwide. Its application is illustrated in column A while automatic/naturalistic

decision-making is shown in column B.

was receiving a checkride from the ATP (who was also a

designated examiner) for a commercial pilot certificate with

a multi-engine rating. After performing airwork at altitude,

they returned to the airport and the private pilot performed a

single-engine approach to a full stop landing. He then taxied

back for takeoff, performed a short field takeoff, and then

joined the traffic pattern to return for another landing. During

the approach for the second landing, the ATP simulated a right

engine failure by reducing power on the right engine to zero

thrust. This caused the aircraft to yaw right.

The procedure to identify the failed engine is a two-step

process. First, adjust the power to the maximum controllable

level on both engines. Because the left engine is the only

engine delivering thrust, the yaw increases to the right, which

necessitates application of additional left rudder application.

The failed engine is the side that requires no rudder pressure,

in this case the right engine. Second, having identified the

failed right engine, the procedure is to feather the right engine

and adjust power to maintain descent angle to a landing.

However, in this case the pilot feathered the left engine because

he assumed the engine failure was a left engine failure. During

twin-engine training, the left engine out is emphasized more

than the right engine because the left engine on most light

twins is the critical engine. This is due to multiengine airplanes

being subject to P-factor, as are single-engine airplanes.

The descending propeller blade of each engine will produce

greater thrust than the ascending blade when the airplane is

operated under power and at positive angles of attack. The

descending propeller blade of the right engine is also a greater

distance from the center of gravity, and therefore has a longer

moment arm than the descending propeller blade of the left

engine. As a result, failure of the left engine will result in the

most asymmetrical thrust (adverse yaw) because the right

engine will be providing the remaining thrust. Many twins are

designed with a counter-rotating right engine. With this design,

the degree of asymmetrical thrust is the same with either engine

inoperative. Neither engine is more critical than the other.

Since the pilot never executed the first step of identifying

which engine failed, he feathered the left engine and set the

right engine at zero thrust. This essentially restricted the

aircraft to a controlled glide. Upon realizing that he was

not going to make the runway, the pilot increased power to

both engines causing an enormous yaw to the left (the left

propeller was feathered) whereupon the aircraft started to turn

left. In desperation, the instructor closed both throttles and

the aircraft hit the ground and was substantially damaged.

This case is interesting because it highlights two particular

issues. First, taking action without forethought can be just

as dangerous as taking no action at all. In this case, the

pilot’s actions were incorrect; yet, there was sufficient

time to take the necessary steps to analyze the simulated

emergency. The second and more subtle issue is that decisions

made under pressure are sometimes executed based upon

limited experience and the actions taken may be incorrect,

incomplete, or insufficient to handle the situation.

Detect (the Problem)

Problem detection is the first step in the decision-making

process. It begins with recognizing a change occurred or an

expected change did not occur. A problem is perceived first

by the senses and then it is distinguished through insight

and experience. These same abilities, as well as an objective

analysis of all available information, are used to determine

the nature and severity of the problem. One critical error

made during the decision-making process is incorrectly

detecting the problem. In the previous example, the change

that occurred was a yaw.

Estimate (the Need To React)

In the engine-out example, the aircraft yawed right, the pilot

was on final approach, and the problem warranted a prompt

solution. In many cases, overreaction and fixation excludes

a safe outcome. For example, what if the cabin door of a

Mooney suddenly opened in flight while the aircraft climbed

through 1,500 feet on a clear sunny day? The sudden opening

would be alarming, but the perceived hazard the open door

presents is quickly and effectively assessed as minor. In

fact, the door’s opening would not impact safe flight and

can almost be disregarded. Most likely, a pilot would return

to the airport to secure the door after landing.

The pilot flying on a clear day faced with this minor problem

may rank the open cabin door as a low risk. What about

the pilot on an IFR climb out in IMC conditions with light

intermittent turbulence in rain who is receiving an amended

clearance from ATC? The open cabin door now becomes

a higher risk factor. The problem has not changed, but the

perception of risk a pilot assigns it changes because of the

multitude of ongoing tasks and the environment. Experience,

discipline, awareness, and knowledge influences how a pilot

ranks a problem.

Choose (a Course of Action)

After the problem has been identified and its impact

estimated, the pilot must determine the desirable outcome

and choose a course of action. In the case of the multiengine

pilot given the simulated failed engine, the desired objective

is to safely land the airplane.

Identify (Solutions)

The pilot formulates a plan that will take him or her to the

objective. Sometimes, there may be only one course of action

available. In the case of the engine failure already at 500

feet or below, the pilot solves the problem by identifying

one or more solutions that lead to a successful outcome. It is

important for the pilot not to become fixated on the process

to the exclusion of making a decision.

Do (the Necessary Actions)

Once pathways to resolution are identified, the pilot selects the

most suitable one for the situation. The multiengine pilot given

the simulated failed engine must now safely land the aircraft.

Evaluate (the Effect of the Action)

Finally, after implementing a solution, evaluate the decision

to see if it was correct. If the action taken does not provide

the desired results, the process may have to be repeated.

Original source PDFPublished from pages 15–20 of the recorded source chapter.
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