the request of the “carrier”, the stall hypothesis and the yellow of the engine on fire

There are two investigations open on the plane crash of 13.09 on Sunday, near Milan, in which eight people lost their lives, including a newborn, who were traveling on board a Pegasus Pc-12, which left a few minutes earlier from Linate . ANSV, the National Flight Safety Agency, has opened a safety investigation and ordered the dispatch of an investigator to the scene of the accident. Investigators will also participate in the investigation from Romania, Switzerland and Canada, namely the countries of registration of the crashed plane, of the construction of the aircraft and of the construction of the engine. The Milan prosecutor’s office – deputy prosecutor Tiziana Siciliano went to the scene yesterday – investigates a plane crash.

Milan plane crash: the mayday never happened

Videos of the surveillance cameras of the ATM car park near the subway stop were captured, as well as some videos made by passers-by and near the car park on which the impact occurred. The black box found about ten meters from the chasm of the building that caught fire was also immediately recovered and seized. Investigators also seized radio conversations with the Linate control tower.

The black box was found intact. The lightweight data recorder, the technicians explain, is something less than a black box, and not only for the weight of just over two kilos: it contains a smaller volume of data but will deliver the secrets of the last seconds of the Pilatus flight to the investigators. Pc-12.

All the hypotheses are premature: it remains to be understood, in addition to the early south-west turn, justified as a “little deviation”, a small deviation from the flight plan, perhaps due to bad weather (but it is not clear), if, a few seconds later , Petrescu asked for a “carrier”, or rather a procedure for returning the Linate private planes to the runway, a complicated maneuver. The mayday never took place and according to the newspapers currently on newsstands this very element makes one doubt the hypothesis of a failure: in the event of a burning engine or other technical problems, the first thing a driver, even a non-expert, does is make sure the free track for the return: it did not happen.

About three minutes after take-off from Linate (1:04 pm on Sunday), the plane should have reached a standard altitude (as indicated by the departure route) of 5 thousand feet, when it was at an altitude of about 3,500-4,000 feet. But it continued in an anomalous way to veer to the right (as emerged from the tracks of the Forlanini radar control center, which deals with traffic in the skies of North-West Italy). When they take off from Linate the planes all proceed north and then, if they have to head south (the Pilatus was flying to Olbia), they initially veer right for a while and then go south towards Piacenza. In this case, however, the plane continued to turn to the right. The radar room, noticing the anomaly, immediately contacted the Pilatus. Petrescu would have replied that he was making a “deviation” (a “little deviation”) and subsequently asked what in technical jargon is called a “vector”, ie space and coordinates to return to the airport. The investigation will have to clarify.

In the crash, the Petrescu family (a nucleus extended to his co-pilot wife Regina Dorothea Petrescu Balzat, his son Dan Stefan Petrescu and his partner, the Quebec lawyer Julien Brossard) and the friends with whom they had arrived in Milan on 30 September to celebrate the baptism of Raphael Nascimbene: parents Filippo and Claire Stephanie Caroline Alexandrescou and grandmother Miruna Anca Wanda Lozinschi.

Milan plane crash: the hypothesis of the engine stall

“The search for videos confirming the first statements of some witnesses, who had seen flames develop from the falling Piper, has so far been unsuccessful – he writes today Republic – And without certainty of a failure, the hypothesis of the “engine stall” caused by a maneuver error (too tight the turn? Too low the altitude?) Of Petrescu takes shape. Dynamics that would explain that practically vertical fall, that loss of lift of the Pilatus that led it to fall in a few seconds “: It will take a few days to know the first results of the analysis of the black box.

There is therefore also the “engine stall” among the hypotheses being examined by investigators and investigators who investigate the accident, also writes the Corriere della Sera. One of the ENAC technicians dealing with the case would have been talking about the blockade, based on the footage of the surveillance cameras in the area, in which the aircraft is seen crashing at very high speed with the nose at 90 degrees and disintegrating on the building . The burning engine is nowhere to be seen. From the few data available so far, in summary, it seems more likely that the solid Pratt & Witney engine mounted on the Piper stalled, probably due to an incorrect maneuver by the pilot. The plane arrived in Milan on Thursday from Romania. In the Milan airport there are no maintenance or refueling of kerosene.

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