13.2 Crew Resource Management & Cabin–Flight Deck Co-ordination

What CRM actually is

Crew resource management is the effective use of all available resources — human, equipment, information and time — to achieve safe and efficient flight operations. It is not communication training, teamwork training or personality training, though it draws on all three. It is a set of countermeasures against the human performance limitations described in the previous section.

Nig. CARs makes it mandatory twice over: 8.14.11.4 provides that the cabin crew training programme should include human factors training, and 8.10.1.34 requires recurrent ground training to include joint CRM with flight crew and FOOs within every 12 calendar months. The word joint is the point — CRM practised only among cabin crew does not rehearse the interface that most often fails.

The components

Authority gradient

The authority gradient is the perceived difference in status between crew members.

• Too steep: the junior crew member does not challenge the senior, the SCCM or the flight deck. Concerns are noticed and not voiced. This is the classic precursor in the accident record.
• Too flat or inverted: no one holds command, decisions are debated when they should be executed, and the crew is slow when speed matters.
• Right: command is clear, and challenge is expected and welcomed. The senior crew member's job is to keep the gradient low enough that challenge happens.

Practical levellers: the SCCM invites input during the briefing; new crew are told explicitly that they are expected to speak up; concerns are thanked even when they turn out to be unfounded; and the flight deck states in the joint briefing what it wants to be told and how.

The graded challenge

Assertiveness is trained as a graded escalation, so that a crew member always has a next step available:

1. Probe — "Have we disarmed door 2L?"
2. State the concern — "I'm concerned that 2L may still be armed."
3. Propose an action — "I suggest we stop and check 2L before anyone touches the handle."
4. Emergency intervention — take the action needed to prevent harm: physically block the door, call stop, or make the announcement.

The training objective is the fourth step. Crew members generally manage the first two and stop there. A crew member who probes twice, is dismissed, and then falls silent has not been assertive; they have been polite. When safety is at stake, escalation continues until the concern is resolved or the hazard is removed.

Two supporting habits make escalation easier: use names, because a challenge addressed to a specific person is far harder to ignore than one addressed to the room; and state the safety consequence, because "we could deploy a slide onto the airbridge crew" carries more weight than "I'm not sure".

Decision-making

Where time permits, a structured model gives a repeatable sequence. DECIDE is widely taught:

• Detect that something has changed;
• Estimate the significance;
• Choose a desirable outcome;
• Identify the actions available;
• Do the chosen action;
• Evaluate the effect, and iterate.

Where time does not permit — a fire, a decompression, an evacuation — decision-making is replaced by trained immediate actions. This is the reason drills are practised to automaticity: under acute stress the crew member will do what is deeply rehearsed and will not reliably construct a novel plan.

The two modes must be distinguished in training. Applying a deliberative model to a fire wastes the only time available; applying a reflex to a complex ambiguous situation produces an unconsidered action.

Workload management

Cabin workload is uneven: heavy at boarding, heavy in the service, heavy at descent, and extremely heavy in an abnormal situation. Managing it means:

• Anticipating peaks and completing what can be done early;
• Prioritising — safety before service, always;
• Delegating clearly, to a named person, with a specific task and a check-back;
• Recognising overload in a colleague, whose signs are tunnel focus, missed calls, rushed movement and short temper;
• Asking for help before saturation, not after.

Co-ordinating with the flight deck

The mechanics that make cabin to flight deck CRM work in practice:

The most valuable single sentence a pilot-in-command can say at the joint briefing is a clear statement of what they want to be told and when. The most valuable habit a cabin crew member can build is reporting the thing they are not sure about, early, in a structured way — because the flight deck can discard information it does not need far more easily than it can recover from information it never received.