Flugvorbereitung – Stay Safe – Safety Promotion for General Aviation

It’s breeding season: watch out for birds!

antonello

19.05.2025

Bird strikes are not only a serious problem in commercial aviation, causing millions of dollars in damage every year. They also affect recreational aircraft. Many pilots are unaware that a collision with a soft-feathered bird can cause serious damage. This can include a shattered windshield with injuries to the cockpit crew, blocked air intakes on the engine, a broken pitot tube, damaged brake hoses, holes or dents in the fuselage or wings, or damage to the rotors on helicopters.

The frequency of bird strikes varies greatly depending on the season. In summer, for example, such incidents are much more common because young birds hatched in spring are just learning to fly and are not yet familiar with the dangers of air traffic. In addition, there is more traffic in summer, which increases the risk of collision with a bird.

What to do in the event of a bird strike?

If a bird strike occurs during takeoff, takeoff must be aborted immediately, provided the runway is long enough. If you are affected by a bird strike, the following applies: Stay calm! Collisions with birds can be very violent in some cases and are accompanied by a loud bang. The shock of a bird strike can be very traumatic for the cockpit crew and any passengers. It is therefore important to remain calm and keep control of the aircraft, maintain the correct speed and fly to the nearest airport as quickly as possible.

What to do after a bird strike: inspection and incident report

A bird strike must always be reported by radio. The aircraft should then be landed as quickly as possible. Once back on the ground, a thorough inspection of the aircraft must be carried out. In particular, the engine intakes and other air intakes must be checked for damage or bird nests, as well as the landing gear, including all supply lines. The damage may be so extensive that the aircraft is no longer airworthy and must be repaired at a suitable maintenance facility. A bird strike incident near an airfield or airport should be reported to the airport operator. Bird strikes are also safety-related events that must be reported in accordance with Regulation (EU) 376/2014.

Preventing bird strikes – but how?

The best thing is to avoid bird strikes altogether. That is why the FOCA works closely with airports and the Sempach Bird Observatory. Bird strike statistics provide interesting insights in this context and ultimately help to prevent bird strikes. It is therefore highly recommended to avoid bird sanctuaries and nature reserves. It is also advisable to always check the Ornitho radar Bird migration radar – www.ornitho.ch during the briefing.

Fly around bird sanctuaries for emergency landing exercises

Emergency landing exercises below the minimum flight altitude are also not permitted in protected areas, but where can these areas be found? You can display several maps at the same time on geo.admin.ch. If you first search for ICAO and then for AuLaV using the search bar, the areas will be visible. We ask you to respect the protected areas and choose sparsely populated or, even better, unpopulated areas for emergency landing exercises. The very rare lapwing, for example, and its brood in the Wauwilermoos vogelwarte.ch – Wauwilermoos habitat network and other protected areas Maps of Switzerland – Swiss Confederation – map.geo.admin.ch will appreciate your consideration!

BAZL page Dealing with wild animals and bird strike risk (admin.ch)

Correct assembly of the glider

Editorial team

09.05.2025

At the beginning of the flying season, the first assembly certainly takes longer than in the fall. Not every move is perfect – and where has the wing prop gone after the winter maintenance? The learning curve is steep and the assembly of the glider soon progresses rapidly again. We may not be aware of this at the moment: Every year, 3 to 4 fatal accidents occur in Europe due to assembly errors. This means that full concentration is required during assembly and especially during the rudder check. Because the topic is relevant to safety, EASA has addressed it in a Safety Information Bulletin 2019-07 (SIB).

Understanding creates safety
The EASA SIB provides some specific examples of incorrect installation. It is obvious that safety splints can indeed be used incorrectly. Understanding the function of the mechanism creates safety. In the case of anti-rotation devices, the screw must first be tightened correctly. And in the case of locking devices that secure an element against displacement, moving the secured element to both end points helps to check the function. If visibility at the connections is restricted, a flashlight can help.

Good practices
In general, assembly and pre-flight checks are relatively well described in the flight manual – and if not, now would probably be the time to write more precise instructions. Interruptions and distractions in the assembly process, but also during checks, are a serious risk. If the rudder is connected but the safety pin is missing, this can be fatal. Every aircraft has its own peculiarities. The transfer of knowledge from one aircraft to another is initially based on assumptions – and these can also be wrong. The flight manual provides clarity here. Then there is the fact that gliding is a team sport – and assembly is no different. Responsibilities must be defined. The assumption that the other person will look can lead to a situation where nobody looks. A signature in the flight logbook (if available) or a list ensures that responsibilities are clearly defined.