It’s The Smart Phone
Flying
Post by Catalina9
The standard for accepting a risk level is a
floating standard, where one enterprise may set the risk acceptance bar at one
level, while another enterprise sets the bar at a more complex level or at a
less complex level for the same hazard. Risk levels are referred to as levels
of risk based upon a numerical or alphabetical scale. A risk matrix is applied
for ranking events in the decision-making process to accept, reject, mitigate,
eliminate or transfer a risk level. Applying a risk matrix is an industry wide
accepted risk analysis standard. While the risk level identification are standard
levels, data applied to establish each level may vary. This in itself establishes
a floating risk level bar of identical hazards. In addition, an established
risk level bar has little or no chance to be moved after a re-assessment. The
nature of human factors is to take the path of least resistance and status quo
is that path.
A risk-matrix scale are arbitrary selected levels |
It might be true that an aircraft Captain is in the
final authority in the risk level acceptance process, but there could also be
severe consequences for a Captain who makes a decision contradicting established
risk level acceptances. Risk level decisions are based on hierarchy of
decisions and are not based on the safe operation of an aircraft or airport.
This can best be explained by the several automated systems with software
installed that have authority beyond a Captain’s authority. Some systems cannot
be manually overridden flight crew. The hierarchy of decisions are first the
regulator’s authority to make regulations. That a regulation is in place, does
not automatically ensure safety. A flight crew must accept the authority of a
regulation and they could be charged with consequences if they did not conform
to one specific regulation. E.g. in 2001 a Captain experienced heavy smoke in
the cockpit and required to deviate from multiple regulations to ensure a safe
landing. This action caused severe consequences with the regulator, the
operator and her career in the aviation industry. The aircraft manufacturer
conducts risk analyses of
aircraft structures and systems. An aircraft is not
placed in service unless risk levels are acceptable. A Captain has no options
but to accept these pre-accepted risk levels. During 2019 there were several
news articles of safety concern with aircraft systems that had been
pre-accepted and therefore could not be changed. On May 11, 1996 an airliner
crashed about 10 minutes after takeoff. News media reported that the Captain
had safety concerns with operations and had made notebook comments to document
the issues. Since these were not officially entered, they became irrelevant to
safety. This is another example of how pre-qualified risk assessments cannot
change unless it make it to the top of the safety hierarchy.
Risk decisions must be at the operations level |
Risk levels are in essence not the level of risk,
but a conglomerate of simple risk analysis decisions implemented separately to
generate one complex system. Risk levels should be defined as the complexity of
risks assessments rather that one single level of risk. The domino effect is an
inherent risk in any system, including a safety system. A safety system is not
immune to hazards due to its intent or for its name. Residual risks (left over
risks) and substitute risks (new risks) are included in the Safety Management System
but are limited to the scope of a corrective action to one identified hazard.
Systems in aviation has become too complex for humans to comprehend. An
Accountable Executive has veto powers to override any safety decisions made at lower
organizational levels or at the other end of the spectrum, unconditionally
accept these risk level decisions. The Safety Management System has become a
Checkbox System, where it’s more important to accept the decision based on who
made the decision, rather than analyse the facts of the hazard.
SMS is an operational system and the final decision
must be at the operations level. It might be a drastic change in operations to
allow for Captains to make final decisions. However, the conglomerate of simple
system in aviation is no longer comprehendible when combined into one complex
system. The only person who must have control of safety in operations at that
time is the Captain. Any aircraft, no matter how automated it is, must include
a function with the capability for the Captain to disengage any system, any
time during the flight and have full control of the aircraft. The Captain is
the only person who can maintain safety of a complex system. When the software
is in control of an aircraft, human errors are transferred from a pilot’s
control inputs, to software developers control inputs. The automated software is
nothing else but your smart-phone or laptop flying the airplane.
Catalina9
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