Six questions behind every fuel check
What was planned?
Know the expected fuel at significant points and the assumptions used to calculate it.
What do we have?
Confirm usable fuel through the aircraft indications and approved cross-check method.
What is the trend?
A growing difference matters more than one isolated figure.
Is it balanced?
Watch distribution and imbalance indications in accordance with type procedures.
What changed?
Wind, level, route, holding, anti-ice, performance or technical status can alter consumption.
What options remain?
Understand how delay, diversion and landing choices affect protected fuel.
Fuel monitoring validates the original plan
Pre-flight planning is based on assumptions about routing, wind, altitude, aircraft performance and delay. In-flight checks test whether those assumptions remain valid. The purpose is not simply to confirm that fuel exists, but to recognise when the operation is developing differently from the plan.
Use the intervals and recording method required by the operator. Compare like with like: actual fuel at a meaningful point against the planned figure for that point. A difference may be explainable, but it should not be dismissed until the reason is understood.
Trend and distribution add context
A stable small difference can be less concerning than a discrepancy that grows at each check. Aircraft fuel flow, balance and system messages help identify whether the issue is operational, performance-related or potentially technical. Avoid diagnosing beyond your authority; provide the evidence clearly.
Fuel status also changes the value of options. Weather deterioration, runway closure or holding may be manageable early, then become restrictive later. Continual reassessment allows decisions while several safe choices remain.
Practise decisions, not arithmetic alone
Upgrade preparation should include explaining what a fuel check means operationally. Can you identify the reason for a variance, predict fuel at the next decision point and describe which assumption would trigger replanning? That is more valuable than repeating a single total.
A simulator scenario can combine an initially subtle fuel trend with weather and ATC delay. The learning lies in timely recognition, communication and option management before the situation becomes urgent.
- 01Recordobtain fuel at the approved interval or trigger
- 02Comparecheck against plan and previous trend
- 03Explainidentify operational changes or unresolved discrepancy
- 04Reassessupdate landing and diversion options with the crew
Educational sequence only. Apply the appropriate approved guidance and see references below.
Upgrade preparation prompt
Upgrade preparation promptIf the fuel difference doubled at the next checkpoint, what information would you want before suggesting a cause?
Put the lesson into practice
A Level-D session can combine fuel trend monitoring with weather, delay and diversion decisions, making the exercise operational rather than purely numerical. Explore HKPAPA Level-D simulator rental.
