Why it is important to abort the start
Flying single-engine aircraft is very safe today, but there is still a residual risk of technical faults or engine failures. Particularly during the take-off process, there is often no time to consult checklists or think long and hard. A clear head, routine and sound preparation can make all the difference here.
Start aborts may be necessary if:
- Technical problems such as engine failures or insufficient power.
- External factors unexpected obstacles or strong crosswinds can jeopardise the start.
- Aircraft problems such as blocked control surfaces or incorrect flap positions can be detected.
Preparing for emergencies: The key to safety
1. mental preparation and briefings
Pilots should run through potential emergency scenarios in their heads before take-off. This mental exercise helps to recall action sequences almost automatically in an emergency. A detailed pre-flight briefing is essential and includes:
- Regular start processes: Speeds for rotation and climb, course changes, target altitudes.
- Measures in the event of problemsDefinition of points for start cancellation or continuation.
2. technical checks on the ground
Careful technical inspections minimise the risk of malfunctions. Special attention is paid to
- Rudder clearanceAll control surfaces must be freely movable.
- Tyres and chassisCheck air pressure and tyre condition.
- Fuel quality: A fuel sample protects against contamination.
- Engine powerEnsure that full power is available.
Decision-making during the start-up process
"Stop or go" strategy
Pilots should define a clear limit before take-off up to which an abort is safely possible. This is based on the so-called Accelerate-Stop-Distancewhich can be roughly estimated for single-engine aircraft from the take-off and landing roll distance.
- Before the border ("stop-minded"): The start is cancelled at any sign of a fault.
- After the border ("go-minded")Only in the event of serious problems such as fire or sudden loss of power will cancellation be considered.
An important indicator: If 70 % of the take-off speed is not reached at half of the runway, the runway is too short.
"REACT" method
During start-up, the abbreviation REACT helps to quickly check relevant parameters:
- RPM: Speed in the green zone?
- Engine Gauges: Engine displays normal?
- Airspeed: Speed is displayed?
- Centerline: Aeroplane on the centre line?
- Take-off Abort Point: Point reached for aborting the start?
Emergency management after take-off
If an engine failure occurs after take-off, quick action is crucial:
- Pressurising to prevent a stallControl of the aircraft has top priority.
- Emergency landingPerform with full flaps and minimum speed.
- CommunicationAs soon as the flight situation is stable, inform the tower.
In the event of operational disruptions during an IFR flight, radar controllers provide comprehensive support to ensure a safe return.
Special challenges in winter conditions
Special care is required in winter:
- Ice and snowAircraft must be completely free of ice and snow in order to achieve the manual values for take-off performance.
- Slide markersChecking the tyres for damage and tension is essential, especially at low temperatures.
Conclusion: safety through preparation and routine
Aborting a take-off is a rare but potentially life-saving measure. Proper preparation, regular training and observance of clearly defined decision limits minimise risks considerably. Pilots who prepare for emergencies with pessimistic precision ensure maximum safety - not only for themselves, but also for their passengers.
Source references:
Aviation magazine
