Safety recommendation SL No. 2013/05T

At one time, between two METARs, visibility dropped from more than 10 km to 2 000 metres without this being reflected in published observations. When METARs are issued every half hour, there is no requirement for a SPECI to be issued even in the event of significantly reduced visibility. Delays in communicating information are unfortunate in a country such as Norway, where the weather changes rapidly due to the topographical conditions.

The Accident Investigation Board Norway recommends that the Norwegian Civil Aviation Authority considers whether the aviation weather service provisions should be amended to include requirements for faster announcement of significant weather changes.

Safety recommendation SL no. 2020/01T

On Wednesday, 11 January 2017, the crew lost control of a Cessna 560 Encore at low altitude after take-off. The most probable explanation for the aircraft's sudden dive, is that the tailplane stalled as a result of icing from slush spray from the runway and from falling snow and sleet. The aircraft's rubber de-icing "boots" were in automatic mode and inactive during the take-off and when the stall occurred. Textron/Cessna has informed AIBN that they not previously have experienced loss of control as a result of icing on the tailplane on their aircraft models.

AIBN recommends that Textron/Cessna inform all its customers that operate Cessna Citations about this accident and about the risk of contamination on the tailplane in the form of ice or other substances witch can result in the tailplane stalling.

Safety recommendation SL no. 2020/02T

On Wednesday, 11 January 2017, the crew lost control of a Cessna 560 Encore at low altitude after take-off. The Accountable Manager (AM) held several key roles within safety. The presumably monitoring and corrective roles, as appears to be the intend through EASA’s PART-ORO, were thus absent.

AIBN recommends that the Civil Aviation Authority Norway changes its routines for approving organisations in line with the intent of the EASA regulation.

Safety recommendation No. 2012/01T

If the rescue parachute is deployed during the flight, the aircraft is in a serious emergency. The probability of the emergency and position being noticed by the alarm and rescue services increases if the emergency locator transmitter (ELT) is triggered automatically at the same time. 

The AIBN recommends that Cirrus Aircraft develops an automatic system that ensures that the ELT is triggered when the Cirrus Aircraft Parachute System (CAPS) is engaged.