MCO 3500.27C
26 NOV 2014
2-3 Enclosure (1)
4. Process. The ABCD Model is not a replacement for the 5-step RM process
or a different process of RM. It is the practical application of the 5-step
process in an environment when time is limited and we are most susceptible to
risk. Figure 2-1 identifies the relationship between the 5-step RM process
and TCRM using the ABCD Model. The following breakdown explains each letter
and expected action.
a. Assess the Situation: The “A” in the mnemonic combines the first two
steps of the 5-step RM process. In a real-time situation, it is essential
for individuals to consider the event in which they are engaged and choose
the appropriate resources or controls to meet the hazards they identify. In
a time critical situation, an assessment of the situation requires an
accurate perception of what is happening in a relatively short time and
projecting its effect. In other words, maintaining good situational
awareness (SA) is key. In TCRM, where there is limited time to assess
hazards, it is an individual’s ability to quickly and effectively comprehend
the situation and apply appropriate, available resources that can mean the
difference between success and failure.
b. Balance Resources. The “B” in the mnemonic is specifically tied to
making risk decisions (step 3 of the five step process) to mitigate risks.
After assessing the situation, personnel must consider using the resources
created for the task or mission. Thorough planning prior to an event will
increase the availability of the appropriate resources to effectively
mitigate hazards. For example, an understanding of the task or mission,
proper training, PPE use, and recognition of personal limitations are all
essential aspects of balancing resources.
c. Communicate to Others. Clear, concise, two-way communication is
essential for effective mission execution. “C” is to remind us to explicitly
communicate during the event, and it is tied to all steps of the 5-step
process. Maintaining good SA of additive conditions, task loading, and crew
factors is critical to communication because an individual’s perception and
communication skills deteriorate as they lose SA. As stress increases or
events become more time constrained, communication tends to become limited or
non-existent. Individuals who understand this relationship are better able
to adjust and mitigate additional risk when they recognize a loss of SA.
Although communicating intentions works best when multiple individuals are
involved in the event, situations may occur where individuals must weigh
decisions on their own. To insure positive and effective communications, it
is critical that a continual internal assessment be conducted by asking
relevant questions such as, “Who needs to know about the situation?”, “Can
this be done differently?”, or “Who can help or assist?”
d. Do and Debrief. The “D” is italicized to emphasize the two parts:
Do and Debrief. This mnemonic is tied to steps four and five of the 5-step
process. Do the task or mission. However, to be successful in the event,
the individual must select and use the appropriate resources while adjusting
actions as required ensuring event success. A vital key to the process is
ensuring that the feedback loop or “Debrief” aspect of the “D” is performed.
It is beneficial for individuals to follow through and complete the ABCD loop
by identifying what worked and what did not and to ensure lessons learned are
disseminated. Debriefs will improve performance and mitigate risks in future
activities. They are essential in completing the ABCD loop. To ensure
future activities are improved and risks are reduced, ask questions during
the debrief such as, “Was our assessment accurate?”, “Were we lucky?”, “How